Engineered for Ease ® Air/Water/Remote Condenser Ice Machines Technician’s Handbook Part Number: 000015430 Rev 02 5/20
Safety Notices Read these precautions to prevent personal injury: • Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death. • Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty. • Proper installation, care and maintenance are essential for maximum performance and trouble-free operation of your equipment.
DEFINITIONS DANGER Indicates a hazardous situation that, if not avoided, will result in death or serious injury. This applies to the most extreme situations. nWarning Indicates a hazardous situation that, if not avoided, could result in death or serious injury. ,Caution Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury. Notice Indicates information considered important, but not hazard-related (e.g. messages relating to property damage).
nWarning Follow these electrical requirements installation of this equipment: during • All field wiring must conform to all applicable codes of the authority having jurisdiction. It is the responsibility of the end user to provide the disconnect means to satisfy local codes. Refer to rating plate for proper voltage. • This appliance must be grounded. • This equipment must be positioned so that the plug is accessible unless other means for disconnection from the power supply (e.g.
nWarning Follow these precautions to prevent personal injury during installation of this equipment: • Installation must comply with all applicable equipment fire and health codes with the authority having jurisdiction. • Connect to a potable water supply only. • To avoid instability the installation area must be capable of supporting the combined weight of the equipment and product. Additionally the equipment must be level side to side and front to back.
nWarning Follow these precautions to prevent personal injury while operating or maintaining this equipment: • Refer to nameplate to identify the type of refrigerant in your equipment. • Only trained and qualified personnel aware of the dangers are allowed to work on the equipment. • Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death. • Crush/Pinch Hazard.
nWarning Follow these precautions to prevent personal injury while operating or maintaining this equipment: • Objects placed or dropped in the bin can affect human health and safety. Locate and remove any objects immediately. • Never use sharp objects or tools to remove ice or frost. • Do not use mechanical devices or other means to accelerate the defrosting process. • When using cleaning fluids or chemicals, rubber gloves and eye protection (and/or face shield) must be worn.
nWarning Follow these precautions to prevent personal injury during use and maintenance of this equipment: • It is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures. • Do Not Store Or Use Gasoline Or Other Flammable Vapors Or Liquids In The Vicinity Of This Or Any Other Appliance. Never use flammable oil soaked cloths or combustible cleaning solutions for cleaning.
DANGER Follow these flammable refrigeration system requirements during installation, use or repair of this equipment: • Refer to nameplate - Ice machine models may contain up to 150 grams of R290 (propane) refrigerant. R290 (propane)is flammable in concentrations of air between approximately 2.1% and 9.5% by volume (LEL lower explosion limit and UEL upper explosion limit). An ignition source at a temperature higher than 470°C is needed for a combustion to occur.
DANGER Follow these flammable refrigeration system requirements during installation, use or repair of this equipment: • All lockout and tag out procedures must be followed when working on this equipment. • This equipment contains high voltage electricity and refrigerant charge. Shorting electrical wires to refrigeration tubing may result in an explosion. All electrical power must be disconnected from the system before servicing the system.
DANGER Follow these precautions to prevent personal injury during use and maintenance of this equipment: • Units with two power cords must be plugged into individual branch circuits. During movement, cleaning or repair it is necessary to unplug both power cords. • Never use a high-pressure water jet for cleaning on the interior or exterior of this unit. Do not use power cleaning equipment, steel wool, scrapers or wire brushes on stainless steel or painted surfaces.
Table of Contents Safety Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Information Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Water-Remote Condenser Models . . . . . . Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . iAuCS® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Touchscreen Operation For The Clean Cycle . . . . . . Starting a clean cycle . . . . . . . . . . . . . . . . . . . . Water curtain/damper operation during the clean cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Event Log Detail . . . . . . . . . . . . . . . . . . . . . . . . 81 Thaw Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Safe Operation Mode . . . . . . . . . . . . . . . . . . . .
Component Check Procedures Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . 135 Control Board, Display And Touchscreen . . . 135 Control Board Relay Test . . . . . . . . . . . . . . . . 138 Programming A Replacement Control Board 139 USB Flash Drive Specifications and Formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Exporting Data to a Flash Drive . . . . . .
Charts Cycle Times/24-Hour Ice Production/Refrigerant Pressure Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 IF0300 Series . . . . . . . . . . . . . . . . . . . . . . . . . .202 IT0300 Series . . . . . . . . . . . . . . . . . . . . . . . . . 204 IT0420 Series . . . . . . . . . . . . . . . . . . . . . . . . . 206 IT0450 Series . . . . . . . . . . . . . . . . . . . . . . . .
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General Information Model Numbers AIR-WATER-REMOTE CONDENSER MODELS Self-Contained Self-Contained Remote Air-Cooled Water-Cooled IDF0300A IDF0300W ---IYF0300A IYF0300W ---IDT0300A IDT0300W ---IYT0300A IYT0300W ---IDT0420A IDT0420W ---IYT0420A IYT0420W ---IDT0450A IDT0450W ---IYT0450A IYT0450W ---------IDF0500N ------IYF0500N IDT0500A IDT0500W IDT0500N IYT0500A IYT0500W IYT0500N IRT0500A IRT0500W ---IDF0600A IDF0600W IDF0600N IYF0600A IYF0600W IYF0600N IDT0620A IDT0620W ---IYT0620A IYT0620W ---IRT0620A IRT06
Regular Dice Half-dice Flake Nugget Gourmet for IB only REFRIGERANT TYPE P R290 (propane) F R404A (four) T R410A (ten) B R600A (butane) E R134A (eight) K R452A 2= 22" wide cabinet #= all other #s mean producon value ELECTRICAL CONFIGURATION 161 = 115/60/1 261 = 208-230/60/1 251 = 220-240/50/1 (S=230) 263 = 208-230/60/3 271 = 200/50-60/1 273 = 200/50-60/3 453 = 380-415/50/3 463 = 460/60/3 ICE MACHINE SERIES I Indigo U Undercounter K Koolaire R Flake/Nugget B Big shot S S-series IB Ice Beverage C Cou
Ice Cube Sizes Regular Dice Half Dice 1-1/8" x 1-1/8" x 7/8" 7/8" x 7/8" x 7/8" 3/8" x 1-1/8" x 7/8" 2.86 x 2.86 x 2.22 cm 2.22 x 2.22 x2.22 cm 0.95 x 2.86 x 2.22 cm Notice All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to incorporate an ice deflector. Prior to using a non-Manitowoc ice storage system with other Manitowoc ice machines, contact the manufacturer to assure their ice deflector is compatible with Manitowoc ice machines.
Warranty For warranty information visit: www.manitowocice.com/Service/Warranty • Warranty Coverage Information • Warranty Registration • Warranty Verification Warranty coverage begins the day the ice machine is installed. WARRANTY REGISTRATION Completing the warranty registration process is a quick and easy way to protect your investment. Scan the QR code with your smart device or enter the link in a web browser to complete your warranty registration. WWW.MANITOWOCICE.
LuminIce® II The LuminIce® growth inhibitor recirculates the air in the ice machine foodzone over a UV bulb. This process will inhibit the growth of common micro-organisms on all exposed foodzone surfaces. • LuminIce® bulbs require replacement on a yearly basis. • The control board can be set to automatically display a reminder after 12 months. NOTE: LuminIce® and LuminIce® II bulbs are not interchangeable; verify your model before ordering a replacement bulb.
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Installation Location of Ice Machine The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • The location must be free of airborne and other contaminants. • Self contained air cooled, water cooled or head section for remote air cooled condenser models - The air temperature must be at least 35°F (1.6°C), but must not exceed 110°F (43.4°C).
Clearance Requirements AIR, WATER, REMOTE CONDENSER MODELS IF0300 IT0300 Top/Sides Back IT0420 IT0450 IT0500 IF0600 IT0620 IT0750 Top/Sides Back IF0900 IT0900 Top/Sides Back IT1200 Top Sides Back IT1500 Top Sides Back IT1900 Top Sides Back Self-Contained Air-Cooled 16" (40 cm) 5" (13 cm) Water-Cooled 8" (20 cm) 5" (13 cm) Self-Contained Air-Cooled Water-Cooled and Remote 12" (30.5 cm) 5" (12.7 cm) 8" (20.3 cm) 5" (12.7 cm) Self-Contained Air-Cooled 8" (20.
Ice Machine Heat of Rejection Series Ice Machine IF0300 IT0300 IT0420 IT0450 IT0500 IF0600 IT0620 IT0750 IF0900 IT0900 IT1200 IT1500 IT1900 Heat of Rejection Air Conditioning* Peak 4600 5450 3800 6000 3800 6000 3800 6000 3800 6000 11800 13700 5400 6300 12800 13700 13000 16000 12700 14800 16200 19100 23000 27000 26100 30500 *BTU/Hour Because the heat of rejection varies during the ice making cycle, the figure shown is an average.
Ice Machine on a Dispenser Installation Observe the following recommendations unless required by the dispenser manufacturer. Refer to the standard equipment price list at www.manitowocice.com for adapter, deflector or ice management accessories. • An adapter is not required for ice machines that match the dispenser size. • A deflector is not required. • Ice level management is recommended to prevent water leakage or movement of ice machine during agitation.
Water Supply and Drains Potable Water • Water temperature must be between 40°F (4.4°C) and 90°F (32°C). • Water pressure must be between 20 psi (140 kPa) and 80 psi (550 kPa). • Minimum internal diameter of tubing 3/8" (10 mm). Drain Connections • Drain lines must have a 1.5 inch drop per 5 feet (2.5 cm per meter) of run and must not create traps. • The floor drain must be large enough to accommodate drainage from all drains. • Run separate bin and ice machine drain lines.
Line Set Applications Notice The 60-month compressor warranty (including the 36-month labor replacement warranty) will not apply if the Manitowoc Ice Machine, Condenser or QuietQube® Condensing Unit were not installed according to specifications. This warranty also will not apply if the refrigeration system is modified with a condenser, heat reclaim device, or other parts or assemblies not manufactured by Manitowoc Ice.
REMOTE CONDENSER Ice Machine Remote Single Circuit Condenser IF0500N JCF0500 IT0500N JCT0500 IF0600N IF0900N JCF0900 IT0900 IT1200N JCT1200 IT1500N IT1900N JCT1500 *Line Set Discharge Line RT 1/2" (1.27 cm) RL 1/2" (1.27 cm) R404A line sets have white protective caps. R410A line sets have pink protective caps.
Calculating Allowable Line Set Distance Line Set Length The maximum length is 100' (30.5 m). Line Set Rise/Drop The maximum rise is 35' (10.7 m). The maximum drop is 15' (4.5 m). 35 FT. (10.7 M) MAXIMUM DISTANCE 35 ft. (10.7 m) Rise: The maximum distance the Condenser or Condensing Unit can be above the ice machine. 15 FT. (4.5 M) MAXIMUM DISTANCE 15 ft. (4.5 m) Drop: The maximum distance the Condenser or Condensing Unit can be below the ice machine.
Calculated Line Set Distance The maximum calculated distance is 150' (45.7 m). Line set rises, drops, horizontal runs (or combinations of these) in excess of the stated maximums will exceed compressor start-up and design limits. This will cause poor oil return to the compressor. Make the following calculations to make sure the line set layout is within specifications. 1. Insert the measured rise into the formula below. Multiply by 1.7 to get the calculated rise.
Remote Ice Machine Usage with NonManitowoc Multi-Circuit Condensers Warranty The sixty (60) month compressor warranty, including thirty six (36) month labor replacement warranty, shall not apply when the remote ice machine is not installed within the remote specifications. The foregoing warranty shall not apply to any ice machine installed and/or maintained inconsistent with the technical instructions provided by Manitowoc Ice. Performance may vary from Sales specifications.
Design & Burst Pressure Design Pressure 600 psig - 4137 kPa Burst Pressure 2500 psig - 17237 kPa Head Pressure Control Valve Do not use a fan cycling control to try to maintain discharge pressure. Compressor failure will result. Any remote condenser connected to a Manitowoc Ice Machine must have the OEM head pressure control valve installed. Manitowoc will not accept substitute “off the shelf” head pressure control valves.
Heat of Rejection Model IF0500N IT0500N IF0600 IF0900/IT0900 IT1200N IT1500N IT1900N Peak 3800 11800 13000 16200 23000 26100 Average 6000 13000 16000 19100 27000 30500 Refrigerant Charge The ice machine model/serial tag lists the refrigerant amount. Remote condensers and line sets contain a vapor charge only. Quick Connect Fittings The ice machine and line sets come with quick connect fittings.
Maintenance Detailed Cleaning and Sanitizing General You are responsible for maintaining the ice machine in accordance with the instructions in this manual. Maintenance procedures are not covered by the warranty. Descale and sanitize the ice machine a minimum of once every six months for efficient operation. If the ice machine requires more frequent descaling and sanitizing, consult a qualified service company to test the water quality and recommend appropriate water treatment.
Detailed Descaling/Sanitizing Procedure This procedure must be performed a minimum of once every six months. • The ice machine and bin must be disassembled descaled and sanitized. • All ice produced during the descaling and sanitizing procedures must be discarded. • Removes mineral deposits from areas or surfaces that are in direct contact with water.
Touchscreen Operation For The Clean Cycle STARTING A CLEAN CYCLE Pressing the clean icon will display a Continue/Abort screen, and a warning that pressing Continue will result in a clean cycle that can last up to 35 minutes. WATER CURTAIN/DAMPER OPERATION DURING THE CLEAN CYCLE The water curtain/damper must remain closed during the clean sequence.
Detailed Descaling/Sanitizing Procedure ,Caution Use only Manitowoc approved Ice Machine Cleaner/ Descaler and Sanitizer for this application (Manitowoc Cleaner/Descaler part number 9405463 and Manitowoc Sanitizer part number 9405653). It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use. CLEANING PROCEDURE ,Caution Do not mix Cleaner/Descaler and Sanitizer solutions together.
Step 1 Open the front door to access the evaporator compartment. Ice must not be on the evaporator during the clean/sanitize cycle. Follow one of the methods below: • Press the power switch at the end of a harvest cycle after ice falls from the evaporator(s). • Press the power switch and allow the ice to melt • Use the touchscreen to initiate a manual harvest cycle. Notice Never use anything to force ice from the evaporator. Damage may result. Step 2 Remove all ice from the bin/dispenser.
Step 4 Wait until the cycle is complete, then disconnect power to the ice machine (and dispenser when used). nWarning Disconnect the electric power to the ice machine at the electric service switch box. Step 5 Remove parts for descaling. D A B E C A. Remove the water curtain • Gently flex the curtain in the center and remove it from the right side. • Slide the left pin out. B. Remove the water trough 42 • Depress tabs on right and left side of the water trough.
C. Remove the water level probe • Pull the water level probe straight down to disengage. • Lower the water level probe until the wiring connector is visible. • Disconnect the wire lead from the water level probe. • Remove the water level probe from the ice machine. D. Remove the ice thickness probe • Compress the hinge pin on the top of the ice thickness probe. • Pivot the ice thickness probe to disengage one pin then the other.
Step 6 Mix a solution of cleaner/descaler and lukewarm water. Depending upon the amount of mineral buildup, a larger quantity of solution may be required. Use the ratio in the table below to mix enough solution to thoroughly clean all parts. Solution Type Cleaner Water 1 gal. (4 L) Mixed With 16 oz (475 ml) cleaner Step 7 Use 1/2 of the descaler/water mixture to descale all components.
Step 8 While components are soaking, use 1/2 of the descaler/water solution to descale all food zone surfaces of the ice machine and bin (or dispenser). Use a nylon brush or cloth to thoroughly descale the following ice machine areas: • Side walls • Base (area above water trough) • Evaporator plastic parts - including top, bottom, and sides • Bin or dispenser Rinse all areas thoroughly with clean water. SANITIZING PROCEDURE Step 9 Mix a solution of sanitizer and lukewarm water.
Step 12 Replace all removed components. Step 13 Wait 20 minutes. Step 14 Reapply power to the ice machine and press the Clean button. Step 15 Press the Clean button and select “Make ice when complete”. Water will flow through the water dump valve and down the drain. Wait approximately 1 minute until the water trough refills and the display indicates Add Chemical.
Water Inlet Valve The water inlet valve normally does not require removal for cleaning. Refer to “Water System Checklist” page 109, if you are troubleshooting water related problems. 1. When the ice machine is off, the water inlet valve must completely stop water flow into the machine. Watch for water flow. When the ice machine is on, the water inlet valve must allow the proper water flow through it. Press the On/ Off button to energize the ice machine. Watch for water flow into the ice machine.
Remedial Cleaning Procedure This procedure will descale the components in the water flow path, and is used to descale the ice machine between the bi-yearly cleaning/descaling and sanitizing procedure. Ice machine cleaner/descaler is used to remove lime scale and mineral deposits. Ice machine sanitizer disinfects and removes algae and slime. NOTE: Although not required and dependent on your installation, removing the ice machine top cover may allow easier access. 1.
3. Press the Clean button and select “Make ice when complete”. Water will flow through the water dump valve and down the drain. Wait approximately 1 minute until the water trough refills and the display indicates Add Chemical. Add the proper amount of ice machine cleaner/descaler to the water trough by pouring between the water curtain and evaporator, then confirm the chemical was added.
Removal from Service/Winterization General Special precautions must be taken if the ice machine is to be removed from service for an extended period of time or exposed to ambient temperatures of 32°F (0°C) or below. Notice If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result. Damage of this nature is not covered by the warranty. Follow the applicable procedure below. AIR-COOLED ICE MACHINES 1.
WATER-COOLED ICE MACHINES 1. Perform steps 1-6 under “Air-Cooled Ice Machines”. 2. Disconnect the incoming water and drain line from the water-cooled condenser. 3. Start the ice making cycle by pressing the On/Off button and wait for the freeze cycle. The increasing refrigerant pressure will open the water regulating valve. 4. Blow compressed air through the condenser until no water remains. 5. Turn off ice machine by pressing the On/Off button and then disconnecting power to the ice machine. 6.
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Operation On/Off Button Touchscreen Lock 11/18/2018 10:42 AM 3 3 Clean Button S MAKING ICE i Touch Screen Features The Indigo® control panel offers a series of pressuresensitive buttons and an interactive touchscreen. Buttons On/Off Button: Provides On/Off functions for the ice machine. Lock/Unlock Button: Allows or prevents touchscreen navigation. Cleaning Button: Initiates a cleaning cycle. Refer to “Detailed Cleaning and Sanitizing” on page 37 for details.
Touchscreen 11/18/2018 10:42 AM 3 3 S MAKING ICE i 11/18/2018 10:42 AM 3 S Program Mode On 3 Home screen allows viewing of ice machine status, alerts and messages. Navigation with the touchscreen provides access to menu items,machine information, settings and event logs. Setup and Energy Saver settings can be adjusted along with access to service and troubleshooting information. The icons provide status indication and allow navigation by pressing the icon.
HOME SCREEN ICON DESCRIPTIONS Icon Description Home Screen Pressing this icon at any time will return the display to the home screen. State of ice Machine is the center portion of the screen which displays the current condition of the ice machine - Making ice, bin full, program mode or machine off Alert Alert icon with number of messages.
Icon iAuCS Making Ice Description This icon appears when the iAuCS activates during a programed cleaning cycle. This icon with a green ring appears after the ice machine has been programmed to run either by time, weight or night off. Machine Off This icon with an orange ring appears after the ice machine has been turned off by either time, weight or night off program. Ice Now 56 This icon with a light blue/dark blue ring allows immediate ice production regardless of ice program settings.
Setup Wizard Screens will automatically advance after a selection is made or press the arrows to advance/go back one screen. All settings can be accessed and changed without the wizard by using menu screen navigation. Setup Press ON/OFF Button Select Language Start Wizard Date and Time Configuration Set Local Time Verify Date Accessory Detection Optional USB Settings Download Configure Units Set Brightness Description On/Off button is used to start/stop ice making. Default is English.
Menu Navigation Overview SETTINGS MENU SCREEN NAVIGATION Select SETTINGS Icon from the Home Screen to access Main Menu screen. The main menu screen contains four main headings, which allow access to subheadings under each main heading.
Service Data Real Time Data Time and Temperature Inputs Outputs Data History for 5 Previous Days Minimum and Maximum Freeze (Length, Time of day, Thermistor Temperatures) Minimum and Maximum Harvest (Length, Time of day, Thermistor Temperatures) Lifetime Data History Installation Date Control Board Replacement Date Control Board Manufacture Date Runtime Cycle Count Potable Water Clean Cycles Alert Log Lists/Clears Alerts Manual Harvest Off or On Control Board Replacement Manual Replacement Manually enter m
Service Diagnostics Control board Enable All Relays Self Check Temperature Sensors Lists Sensor Temperatures Inputs Lists Control Board Input Information User Interface Screen Calibration Button Diagnostics Screen Diagnostics Screen Calibration Contact information Factory defaults to QR code and website address to Manitowoc Ice’s Global Locator. Edit Contact Information Button. USB Upgrade Firmware Export Data iAuCS Manually initiate the iAuCS pump for pump/hose priming.
Settings Language Select Language Reminders Clean Reminder Set Month Interval Air Filter Set On/Off/Interval Water Filter Set Reminder Configure Date & Time Configure Date & Time Set Time Set Date Units Standard or Metric Brightness Adjust Touch Screen Brightness For Sleep Mode or Inactivity. NOTE: 100% brightness is activated by touching the screen when the lock feature is off.
Reset Defaults Require Setup Wizard Optional Setup Wizard restart for training purposes or resale of equipment.
Operational Checks GENERAL Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment. To ensure proper operation, always follow the Operational Checks: • when starting the ice machine for the first time • after a prolonged out of service period • after cleaning and sanitizing NOTE: Routine adjustments and maintenance procedures are not covered by the warranty.
ICE THICKNESS CHECK The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3 mm). NOTE: Make sure the water curtain/splash shields are in place when performing this check. It prevents water from splashing out of the water trough. Remove the curtain to make an adjustment, then replace immediately after the adjustment is made. 1. Inspect the bridge connecting the cubes. It should be 1/8" (3 mm) thick. 2.
Control Board Timers The control board has the following non-adjustable timers: • The ice machine is locked into the freeze cycle for 6 minutes before the ice thickness probe can initiate a harvest cycle. • The maximum freeze time is 35 minutes at which time the control board automatically initiates a harvest sequence. • The maximum harvest time is 7 minutes, the control board will preform a Thaw Cycle and then return the ice machine to the freeze cycle.
Sequence of Operation SELF CONTAINED AIR OR WATER COOLED NOTE: The On/Off button must be depressed and the water curtain/ice dampers must be in place on the evaporator before the ice machine will start. Initial Start-Up or Start-Up After Automatic Shut-Off 1. Water Purge Before the compressor starts, the water pump and water dump solenoid energize to purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water. 2.
4. Freeze Water Pump The water pump(s) energizes and water flows over the evaporator. The water pump is energized throughout the freeze cycle. Water Inlet Valve The water inlet valve energized in prechill. After water contacts the low and high water probes the water fill valve de-energizes. Ice builds on the evaporator and the water level drops. When water loses contact with the high water probe, the water fill valve energizes until water contacts the high water probe again.
Ice Thickness Probe The freeze cycle continues until the six minute freeze lock expires and enough ice has formed to send a signal from the ice thickness probe to the control board. During the first 6 minutes of the freeze cycle the ice thickness probe microphone samples ambient noise. 6 minutes into the freeze cycle baseline readings are recorded. Ice formation on the evaporator will change the readings; when the baseline readings are exceeded a harvest cycle starts. Harvest Sequence 5.
6. Harvest The air pump (when used) remains energized and the harvest valve(s) remains open. The refrigerant gas warms the evaporator causing the cubes to slide, as a sheet, off the evaporator and into the storage bin. If the damper/ curtain does not open within 3.5 minutes in the harvest cycle the following occurs: • 3.5 minutes - The water inlet valve energizes until water touches the high water level probe. • 4 minutes - The water pump energizes. • 6.5 to 7 minutes - The water dump valve energizes.
Part Number: 000015430 Rev 02 5/20 Harvest Sequence 6. Water Purge 7. Harvest 5. Freeze 4. Prechill 3. Compressor Startup Freeze Sequence 2. Pressure Equalization Initial Start-Up 1.
Part Number: 000015430 Rev 02 5/20 71 On Off Off On On Off On On On Off Off Off On Harvest Air Water Inlet Valve(s) Pump(s)* Valve On On Off Water Pump Off Off Off Off Water Dump Valve Off On On On Off On On On Contactor Compressor Coil * Not used on all models ** A thaw will start when the bin switch does not open within 7 minutes of the start of a harvest cycle. Thaw Cycle Dump valve energizes at 6.5 minutes in harvest cycle 8.
REMOTE CONDENSER NOTE: The On/Off button must be depressed and the water curtain/ice dampers must be in place on the evaporator before the ice machine will start. Initial Start-Up or Start-Up After Automatic Shut-Off 1. Water Purge Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds, to completely purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water. 2.
4. Freeze Water Pump The water pump(s) energizes and water flows over the evaporator. The water pump is energized throughout the freeze cycle. Water Inlet Valve The water inlet valve energized in prechill. After water contacts the low and high water probes the water fill valve de-energizes. Ice builds on the evaporator and the water level drops. When water loses contact with the high water probe, the water fill valve energizes until water contacts the high water probe again.
Ice Thickness Probe The freeze cycle continues until the six minute freeze lock expires and enough ice has formed to send a signal from the ice thickness probe to the control board. During the first 6 minutes of the freeze cycle the ice thickness probe microphone samples ambient noise. 6 minutes into the freeze cycle 4 baseline readings are recorded. Ice formation on the evaporator will change the readings; when two of the four baseline readings are exceeded a harvest cycle starts. Harvest Sequence 5.
Automatic Shut-Off 7. Automatic Shut-Off When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the water curtain/ice damper and will hold it open. After the water curtain/ice damper is held open for 30 seconds, the ice machine shuts off. The ice machine remains off for 3 minutes before it can automatically restart.
Part Number: 000015430 Rev 02 5/20 4. Prechill Off Off 3. Compressor Startup Freeze Sequence Off On Off On On Off Off Off On Off Off On On Off Water Harvest HPR Air Pump Valve(s) Valve Pump(s)* 2. Pressure Equalization Initial Start-Up 1.
Part Number: 000015430 Rev 02 5/20 77 Starts 3.5 minutes in harvest cycle Thaw Cycle 7. Harvest 6. Water Purge Harvest Sequence 5.
Part Number: 000015430 Rev 02 5/20 Off On On Off On On Off On On Off On On Water Harvest HPR Air Pump Valve(s) Valve Pump(s)* Off Off Off Water Inlet Valve Off On Off Off On On Off On On Off On On Water Contactor Coil Condenser Dump Liquid Line Compressor Fan Motor Valve Solenoid * Not used on all models ** A Thaw Cycle will start when the bin switch does not open within 7 minutes of the start of a harvest cycle. 8. Automatic Shut-Off Dump valve energizes at 6.
Troubleshooting Troubleshooting Check the touchscreen for alerts - An alert icon with the number of messages will be displayed if alerts are present. Pressing the alert icon will display the alert log which will allow viewing and resetting of alerts. Refer to the alert log and event log on the following pages for a description of the event.
EVENT LOG Refer to “Event Log Detail” For Code descriptions.
Displayed Text Checksum WatchDog UI Comm Code Description E36 Check Sum Error E37 Watch Dog Event E38 UI Comm Event EVENT LOG DETAIL E01 Long Freeze 3 consecutive 35 minute freeze cycles = Ice machine is off. E02 Long Harvest 3 consecutive 7minute harvest cycles = Ice machine is off. E03 Power Loss When power is interrupted to the ice machine the control board will log the event in the ELOG and stamp the loss of power on power-up.
E09 Flooding Evaporator Fault Single Evaporator, Single Circuit Average compressor discharge line temperature during the first 6 minutes of the freeze cycle (T2) compared to the average of the Prechill (T1) +50°F is less than 1.05°F. E10 Flooding Evaporator Fault Dual TXV, Dual Circuit Average compressor discharge line temperature during the first 6 minutes of the freeze cycle (T2) compared to the average of the Prechill (T1) +50°F is less than 1.05°F.
E19 Ice Thickness Probe Fault The monitored Frequencies is out of the appropriate range (probe unplugged or problem with microphone). E20 Water System Fault Any of the following: 1. Sensing high water probe and not low water probe. 2. Evaporator outlet temperature is less than -10°F 6.5 to 7.5 minutes in freeze cycle. 3. Low water probe is satisfied at the end of harvest. 4. Low or high water probe is satisfied at end of freeze cycle.
E26 T6 or T7 Temperature Issue The thermistor had an average value reading outside of the valid range. E27 T6 or T7 Temperature Issue The thermistor had an average value reading outside of the valid range. E28 iAuCS When the iAuCS clean option is selected from the menu, the control checks for the presence of the iAuCS board. When the iAuCS is not connected it will signal an Event which will clear as soon as the hardware is detected.
E36 Check Sum Error Event Log Only: Activates on power loss. E37 Watch Dog Event Event Log Only: Micro Process time out, possible electrical noise. E38 UI Comm Event Event Log Only: User interface communication error: loose communication cable, power interruption.
THAW CYCLE When the damper/curtain does not open during the 7 minute harvest cycle the following Thaw Cycle occurs: • 7 minutes - The compressor, harvest solenoid valve and dump valve de-energize. The water pump remains energized and the water inlet valve energizes until water touches the high water level probe. • Water is circulated, dumped and refilled to the high water level probe 18 times (approximately 1 hour).
SAFE OPERATION MODE Allows the ice machine to operate up to 72 hours if the ice thickness probe (E19 fault) and/or water level probe sensors fail (E20 fault). • When the control board starts the safe mode an alert is indicated to notify the end-user they have a production problem. • The control board automatically initiates and monitors the safe mode. The control will automatically exit the safe mode if a normal signal is received from the input.
E01 LONG FREEZE CYCLE If the freeze time reaches 35 minutes, the control board automatically initiates a harvest cycle. If 3 consecutive 35-minute freeze cycles occur, the ice machine stops. E02 LONG HARVEST CYCLE If the harvest time reaches 7 minutes, the control board will start a Thaw Cycle and automatically return the ice machine to the freeze cycle. After 3 consecutive long harvest cycles the ice machine stops.
E01 LONG FREEZE Freeze time exceeds 35 minutes for 3 consecutive freeze cycles. Possible cause checklist Improper Installation • Refer to “Installation/Visual Inspection Checklist” on page 108 Water System • Dirty/defective water level probe • Low water pressure (20 psig min.) • High water pressure (80 psig max.) • High water temperature (90°F/32.2°C max.
• TXV starving or flooding (check bulb mounting) • Non-condensible in refrigeration system • Plugged or restricted high side refrigerant lines or component • Restricted air flow/dirty condenser fins • High inlet air temperature • Condenser discharge air recirculation 90 Part Number: 000015430 Rev 02 5/20
E02 LONG HARVEST Harvest time exceeds 7 minutes for 3 consecutive harvest cycles.
Troubleshooting By Symptom The troubleshooting procedures follow diagnostic charts. There are four symptoms, the symptom that you are experiencing will determine which diagnostic chart to use. The chart asks yes and no questions to determine the problem. The diagnostic chart will direct you to a procedure to correct the problem. Remote condenser, and self contained models use separate charts.
RESET TO FACTORY DEFAULTS Before starting troubleshooting procedures, reset the control board to factory defaults to prevent mis-diagnosis. Before resetting to factory defaults do one of the following: A. Copy settings to a USB device and flash settings into the control board when diagnostics are complete. B. Write down any customer settings so they can be re-entered when diagnostics are complete. To reset the ice machine to factory defaults select Menu then Reset Defaults.
No Are there any lights on or flashing on the control board? No START Is the display interface energized and func oning? No No Display light Flashing? Yes No Is there an Alert or Error Logged? Yes Yes Cycle Power to Board, are lights flashing? No Yes Micro light flashing? Does the ice machine start when the Power buon is pushed? Refer to display & control board diagnos cs Yes Yes No Yes Refer to display & control board diagnos cs Yes Unit has adequate ground? No Install Ground
Part Number: 000015430 Rev 02 5/20 95 Yes Control board fuse is good? Replace fuse & determine which component caused fuse to blow No Supply power to the ice machine No Yes Refer to display & control board diagnos cs Line voltage at wires 55 & 56 on 9 pin control board connector? No Yes Bin switch light on? (Mul evap all lights on?) Yes No Yes All water curtains or dampers in place? No Install the water curtain/damper
Part Number: 000015430 Rev 02 5/20 Refer to display & control board diagnos cs No Test run ice machine Yes Ice machine starts? Press power bu on to start ice making Yes Yes Is magnet on the water curtain/damper? Yes No Refer to bin switch diagnos cs Replace the water curtain/damper
#2 - LOW PRODUCTION, LONG FREEZE CYCLE Ice Machine has a Long Freeze Cycle Ice Formation is Thick or Thin on Inlet or Outlet of Evaporator or Low Production How to Use the Freeze Cycle Refrigeration System Operational Analysis Table GENERAL These tables must be used with charts, checklists and other references to eliminate refrigeration components not listed on the tables and external items and problems which can cause good refrigeration components to appear defective.
Step 2 Enter Checkmarks (√). Each time the actual findings of an item in the “Operational Analysis” column matches the published findings on the table, enter a Checkmark. Example: Freeze cycle suction pressure is determined to be low. Enter a Checkmark in the “low” column. Step 3 Add the Checkmarks listed under each of the four columns. Note the column number with the highest total and proceed to “Final Analysis.
Part Number: 000015430 Rev 02 5/20 99 Ice Formation Pattern Reference “Ice Formation Pattern” on page 110 Installation and Water System Operational Analysis Ice Production Reference “Ice Production Check” on page 106 Ice formation normal Ice formation is extremely Ice formation is extremely -orthin on outlet of thin on outlet of Ice formation normal Ice formation is extremely evaporator evaporator -orthin on inlet of evaporator -or-orNo ice formation on entire -orNo ice formation on the No ice formatio
Part Number: 000015430 Rev 02 5/20 Operational Analysis Freeze Cycle Discharge Pressure ________ _______ ______ 1 minute Middle End into cycle Freeze Cycle Suction Pressure ________ _______ ______ 1 minute Middle End into cycle Suction pressure is High Suction pressure is Low or Normal Suction pressure is High Suction pressure is High If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist page 117 to eliminate problems and/or components not listed
Part Number: 000015430 Rev 02 5/20 101 Operational Analysis Wait 5 minutes into the freeze cycle. Compare temperatures of evaporator inlet and evaporator outlet. Inlet T3 ____________°F (°C) Outlet T4 __________ °F (°C) Difference T3 & T4 ____________ °F (°C) Reference “Comparing Evaporator Inlet and Outlet Temperatures Self-contained & Remote Condenser Single Expansion Valve Machines” on page 120 Final Analysis Enter total number of boxes checked in each column.
Part Number: 000015430 Rev 02 5/20 Bottom or 1 Side_________ Ice Formation Pattern Top or 1 Side_________ Installation and Water System Operational Analysis Ice Production Ice formation is Ice formation is extremely thin on outlet extremely thin on outlet of evaporator of one side or Top or -orBottom of evaporator No ice formation on one -orside or Top or Bottom of No ice formation on evaporator entire evaporator Ice formation normal -orIce formation is extremely thin at inlet of one side or Top
Part Number: 000015430 Rev 02 5/20 103 T2 _________°F (°C) Reference “Discharge Line Temperature Analysis” on page 123 Wait 5 minutes into the freeze cycle. Compare temperatures of compressor discharge line and harvest valve inlet. Reference “Harvest Valve Analysis” on page 121 Discharge Line Temperature Record freeze cycle discharge line temperature at the end of the freeze cycle. Discharge line temp.
Part Number: 000015430 Rev 02 5/20 Freeze Cycle If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem Discharge Pressure checklist to eliminate problems and/or components not listed on this table before proceeding.
Part Number: 000015430 Rev 02 5/20 105 Final Analysis Enter total number of boxes checked in each column _________°F (°C) Discharge Line Temperature Record freeze cycle discharge line temperature at the end of the freeze cycle Harvest Valve Leaking Discharge line temp. 150°F (65°C) or higher at the end of the freeze cycle Low On Charge -orTXV Starving Discharge line temp. 150°F (65°C) or higher at the end of the freeze cycle TXV Flooding Discharge line temp.
Ice Production Check The amount of ice a machine produces directly relates to the operating water and air temperatures. This means a condensing unit with a 70°F (21°C) outdoor ambient temperature and 50°F (10°C) water produces more ice than the same model condensing unit with a 90°F (32°C) outdoor ambient temperature and 70°F (21°C) water. 1. Determine the ice machine operating conditions: Air temp entering condenser:____° Water temp entering sump trough:____° 2.
However, if the ice pattern is normal and the 1/8" thickness is maintained, the ice slab weights listed with the 24-Hour Ice Production Charts may be used. 4. Compare the results of step 3 with step 2. Ice production checks that are within 10% of the chart are considered normal. If they match closely, determine if: • Another ice machine is required. • More storage capacity is required. • Relocating the existing equipment to lower the load conditions is required.
Installation/Visual Inspection Checklist Inadequate Clearances • Check all clearances on sides, back and top.
Water System Checklist A water-related problem often causes the same symptoms as a refrigeration system component malfunction. Water system problems must be identified and eliminated prior to replacing refrigeration components.
Ice Formation Pattern Evaporator ice formation pattern analysis is helpful in ice machine diagnostics. Analyzing the ice formation pattern alone cannot diagnose an ice machine malfunction. However, when this analysis is used along with Manitowoc’s Freeze Cycle Refrigeration System Operational Analysis Tables, it can help diagnose an ice machine malfunction. Any number of problems can cause improper ice formation.
2. Extremely Thin at Evaporator Outlet There is no ice, or a considerable lack of ice formation, at the outlet of the evaporator. Examples: No ice at all on the outlet half of the evaporator, but ice forms on the inlet half of the evaporator. Or, the ice at the outlet of the evaporator reaches 1/8" to initiate a harvest, but the inlet of the evaporator already has 1/2" to 1" of ice formation. 3.
One Evaporator, Two TXV 30" Models Tubing routing for one evaporator with two TXV’s is different. The evaporator has two inlets and outlets. Fill pattern varies depending on which circuit is affected, Extremely Thin at the Evaporator Outlet will first be visible either 1/4 or 3/4 of the way down the evaporator. Extremely Thin at the Evaporator Inlet will show at the bottom of the evaporator or 1/2 of the way down depending on the circuit affected.
One Evaporator, Two TXV 48" Models Tubing routing for one evaporator with two TXV’s is different. The evaporator has two inlets and outlets. Fill pattern varies depending on which circuit is affected. Extremely Thin at the Evaporator Outlet will first be visible 1/3 of the way down the evaporator. Only one side of the evaporator may be affected depending on failure.
Analyzing Discharge Pressure in the Freeze Cycle 1. Determine the ice machine operating conditions: Air temp. entering condenser ______ ° Water temp. entering sump trough ______ ° 2. Refer to Operating Pressure table (starting on page 201) for ice machine being checked. 3. Use the operating conditions determined in step 1 to find the published normal discharge pressures: Freeze Cycle ______ Harvest Cycle ______ 4. Perform an actual discharge pressure check.
Freeze Cycle Discharge Pressure High Checklist Improper Installation • Refer to “Installation/Visual Inspection Checklist” on page 108 Air Condenser • Dirty condenser filter • Dirty condenser fins • High inlet air temperature • Condenser discharge air recirculation • Defective fan cycling control • Defective fan motor • Defective head pressure control valve (Remote) Water Condenser • Low water pressure (20 psig [138 kPa] min.) • High inlet water temperature (90°F/32°C max.
Freeze Cycle Discharge Pressure Low Checklist Improper Installation • Refer to “Installation/Visual Inspection Checklist” on page 108 Air Cooled Condensers • Defective head pressure control valve, won’t bypass refer to “Head Pressure Control Valve” on page 171 • Defective fan cycle control, stuck closed refer to “Fan Cycle Control” on page 164 Water Cooled Condensers • Water Regulating Valve out of adjustment • Water Regulating Valve Defective Other • Undercharged • Wrong type of refrigerant • Non-Ma
Analyzing Suction Pressure The suction pressure gradually drops throughout the freeze cycle. The actual suction pressure (and drop rate) changes as the air and water temperature entering the ice machine changes. These variables also determine the freeze cycle times. To analyze and identify the proper suction pressure drop throughout the freeze cycle, compare the published suction pressure to the published freeze cycle time. NOTE: Analyze discharge pressure before analyzing suction pressure.
Suction Pressure High Checklist Improper Installation • Refer to “Installation/Visual Inspection Checklist” on page 108 Discharge Pressure • Discharge pressure is too high and is affecting suction pressure – refer to “Freeze Cycle Discharge Pressure High Checklist” on page 115 Improper Refrigerant Charge • Overcharged (also see “Freeze Cycle Discharge Pressure High Checklist” on page 115) • Wrong type of refrigerant • Non condensible in system Components • Harvest valve leaking • Harvest pressure solen
Suction Pressure Low Checklist Improper Installation • Refer to “Installation/Visual Inspection Checklist” on page 108 Discharge Pressure • Discharge pressure is too low and is affecting low side – refer to “Freeze Cycle Discharge Pressure Low Checklist” on page 116 Improper Refrigerant Charge • Undercharged • Wrong type of refrigerant Other • Non-Manitowoc components in system • Improper water supply over evaporator – refer to “Water System Checklist” on page 109 • Restricted/plugged liquid line drier
Comparing Evaporator Inlet and Outlet Temperatures Self-contained & Remote Condenser Single Expansion Valve Machines The temperatures of the suction lines entering and leaving the evaporator alone cannot diagnose an ice machine. However, comparing these temperatures during the freeze cycle, along with using Manitowoc’s Freeze Cycle Refrigeration System Operational Analysis Table, can help diagnose an ice machine malfunction.
Harvest Valve Analysis Symptoms of a harvest valve remaining partially open during the freeze cycle can be similar to symptoms of either an expansion valve or compressor problem. The best way to diagnose a harvest valve is by using Manitowoc’s Ice Machine Freeze Cycle Refrigeration System Operational Analysis Table. Use the following procedures to determine if a harvest valve is remaining partially open during the freeze cycle. SELF-CONTAINED OR REMOTE CONDENSER MODELS HARVEST VALVE ANALYSIS 1.
Findings The inlet of the harvest valve is cool enough to touch and the compressor discharge line is hot. Comments Normal Operation This is normal as the discharge line should always be too hot to touch and the harvest valve inlet, although too hot to touch Cool & Hot during harvest, should be cool enough to touch after 5 minutes into the freeze cycle.
Discharge Line Temperature Analysis GENERAL Knowing if the discharge line temperature is increasing, decreasing or remaining constant can be an important diagnostic tool. Compressor discharge line temperature on a normally operating ice machine steadily increases throughout the freeze cycle. Ambient air temperatures affect the discharge line temperature. Higher ambient air temperatures at the condenser and/ or higher inlet water temperature = higher discharge line temperatures at the compressor.
Water Regulating Valve Problem (Freeze Cycle) Valve not maintaining discharge pressure. • Valve incorrectly set, dirty or defective. Adjust valve to correct discharge pressure for your model (refer to cycle times/24 hour productions charts), clean or replace valve. Discharge pressure extremely high; Liquid line entering receiver feels hot • Water regulating valve incorrectly set or not opening • Insufficient water volume - undersized/kinked lines, mineral or scale buildup in lines.
Final Analysis - Self-contained Air, Water & Remote Condenser Models The column with the highest number of check marks identifies the refrigeration problem. COLUMN 1 - HARVEST VALVE LEAKING Replace the valve as required. COLUMN 2 - LOW CHARGE/TXV STARVING Normally, a starving expansion valve only affects the freeze cycle pressures, not the harvest cycle pressures. A low refrigerant charge normally affects both pressures. Verify the ice machine is not low on charge before replacing an expansion valve. 1.
COLUMN 3 - TXV FLOODING OR REFRIGERANT OVERCHARGE A loose or improperly mounted expansion valve bulb causes the expansion valve to flood. Check bulb mounting, insulation, etc, before changing the valve. Verify refrigerant amount is correct by weighing recovered refrigerant before replacing a TXV. COLUMN 4 - COMPRESSOR Replace the compressor. To receive warranty credit, the compressor ports must be properly sealed by crimping and soldering them closed.
SYMPTOM #3 & #4 - HARVEST PROBLEMS SELF‑CONTAINED AIR, WATER & REMOTE CONDENSER MODELS Definition of a harvest problem; At the end of a 3.5 minute harvest cycle the slab of ice is still contacting the evaporator. The slab of ice may or may not be removable by hand. Harvest problems can be split into two symptoms. • Symptom 3 - Normal sheet of cubes at the end of the harvest cycle. Ice is difficult to remove from the evaporator by hand.
NO START Low produc on, Normal fill pa ern, long harvest cycle, Possible SL #2, Back of cubes are not melted YES Is head pressure high & suc on pressure low in harvest? (Refer to Pressure Charts) YES Is harvest valve energized? YES Discharge line temperature is greater than 150°F at the end of the freeze cycle? NO YES NO Verify coil has power and func ons, replace harvest valve if coil is good Refer to Sequence of Opera on & Wiring Diagrams Refer to Symptom #2 Freeze Cycle Opera onal Analy
Part Number: 000015430 Rev 02 5/20 129 Self Contained Air-cooled Condenser? NO YES NO Fan cycling control operates correctly in freeze cycle? Replace Fan Cycling Control YES NO YES Repeat this flowchart & verify all data Are you sure Discharge line temperature is normal? Fan cycling control opens below setpoint in harvest cycle?
Part Number: 000015430 Rev 02 5/20 Liquid Line Temperature Hot System low on refrigerant Replace Headmaster NO Liquid Line Temperature Warm (body temperature) Liquid Line Temperature Cool Wet condenser with water during freeze cycle YES START Fails at night or in low ambient - Operates normally above 70F/21C YES Discharge line temperature is normal at the end of the freeze cycle? All Remotes = >150F/66C YES Normal ice fill, long harvest cycle, possible E02, back of cubes are not melted at
Part Number: 000015430 Rev 02 5/20 131 Refer to Symptom #4 Will Not Harvest, Freeze Cycle Normal & Ice Cubes are Melted Flowchart Is harvest valve energized? YES YES Is head pressure normal & suc on pressure normal in harvest? NO Is head pressure low & suc on pressure low in harvest? NO Is head pressure high & suc on pressure low in harvest? YES NO Repeat this flowchart & verify all data Refer to Harvest Pressure Regula ng Valve Diagnos cs YES Verify coil has power and func ons, Replace harve
Part Number: 000015430 Rev 02 5/20 NO Does ice remain frozen to the evaporator at the end of the harvest cycle? NO START Are back of the cubes melted at end of harvest cycle? Refer to Symptom #3 Freeze Cycle Opera onal Analysis Table YES YES NO Is water flowing over the evaporator in the first 45 seconds of harvest? YES Is Ice Machine level? YES NO Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ice Cubes are Melted Aer Harvest SYMPTOM #4 - SELF-CONTAINED AIR, WATER-COOLED OR
Part Number: 000015430 Rev 02 5/20 133 Refer to Preventa ve Maintenance Cleaning Procedure YES NO Refer to Symptom #2 Freeze Cycle Opera onal Analysis Table NO Discharge line temperature is greater than 150°F at the end of the freeze cycle? Is the evaporator dirty? (Dry evaporator first then check) NO YES Refer to Ice Thickness Probe Adjustment Procedure NO Are ice thickness, cycle mes and slab weights correct? Is the evaporator damaged? Dents, loose par ons or pla ng issues?
THIS PAGE INTENTIONALLY LEFT BLANK 134 Part Number: 000015430 Rev 02 5/20
Component Check Procedures Electrical Components CONTROL BOARD, DISPLAY AND TOUCHSCREEN FUNCTION The control board, display and touch screen provide user input and control the ice machine sequence of operation. NOTE: Anytime power is supplied to wires #55 & #56 on the control board, the “Display” and “Micro” lights will flash on and off randomly. The two green lights are located on the top corner of the control board. Display Diagnostics Symptom - Micro light flashes and display light is off.
Control Board Diagnostics 1. Micro light is not flashing. 2. Disconnect line voltage power supply to the ice machine and wait a minimum of 15 seconds, then reapply power. A. Micro light flashes - continue with step 3. B. Micro light is off - Test fuse for continuity. If fuse tests good replace control board. 3. Perform a control board self-test. • Menu/Service/Diagnostics/Control Board/Self Check. The control board performs a self test.
Touchscreen Diagnostics Verify touchscreen is unlocked prior to performing diagnostics. 1. Navigate to User Interface on the display and perform the on-screen instructions. • Menu/Service/Diagnostics/User Interface. NOTE: During screen calibration it is important to touch and hold down the cross hairs for three seconds at a time. 2. The calibration will either pass or fail. If the touchscreen fails calibration and will not function correctly in other menu functions replace the touchscreen module.
CONTROL BOARD RELAY TEST The control board can be set to energize all relays for 3.5 minutes. This allows testing to verify control board relays are closed and line voltage is available for ice machine components - Water pump, dump valve, water inlet valve, harvest valve(s), air compressor(s), contactor/compressor/ fan motor - The fan cycle control must close to energize the fan motor. 1. Press On/Off button to turn off ice machine and navigate in menu to enable all relays.
PROGRAMMING A REPLACEMENT CONTROL BOARD Indigo™ replacement control boards require the Model number to be entered to activate the appropriate look up tables for operation and diagnostic. This can be done two different ways, USB Setup or Manual Setup. USB Setup - Applicable when the control board is operational and has a mechanical issue such as a sticking relay. The asset data is transferred to the replacement control board from the faulty control board.
USB FLASH DRIVE SPECIFICATIONS AND FORMATTING Updating firmware on Indigo™ model ice machines requires a properly formatted 32 GB or smaller USB flash drive. All USB flash drives must be formatted before use to remove any software programs or files currently on the flash drive. USB Flash Drive Specifications: • USB 2 Version • 32 GB or less capacity • Fat32 File System USB Flash Drive Formatting: Procedure to format a USB flash drive varies with operating system software.
EXPORTING DATA TO A FLASH DRIVE Data can be copied from the control board memory to a flash drive and used to transfer setup and/or cycle data to a replacement control board or to transfer setup information to multiple ice machines. Data may also be requested by service department personnel for analysis or as an aid to troubleshooting. The data files are small and can be attached to an email. Important The flash drive must be formatted before using.
UPGRADING FIRMWARE WITH A FLASH DRIVE Important The flash drive must be formatted before using. All files and software on the flash drive are removed during the formatting process. 1. Drag and drop the files from website or email onto a flash drive, insuring they are not in a folder. 2. Ensure that the ice machine’s power is on. 3. Navigate to USB - Menu/Service/USB. 4. Insert the flash drive into the USB port on the ice machine control board. (Do not remove flash drive until update is complete.
MAIN FUSE FUNCTION The control board fuse stops ice machine operation if electrical components fail, causing high amp draw. SPECIFICATIONS The main fuse is 250 Volt, 6.3 amp. nWarning High (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing the control board fuse or pressing the On/Off button will not remove the power supplied to the control board. CHECK PROCEDURE 1.
BIN SWITCH FUNCTION Movement of the water curtain/ice dampers control bin switch operation. The bin switch has two main functions: 1. Terminating the Harvest cycle and returning the ice machine to the Freeze cycle. This occurs when the bin switch is opened and closed again within 30 seconds during the Harvest cycle. 2. Automatic ice machine shut-off. If the storage bin is full at the end of a Harvest cycle, the sheet of cubes fails to clear the water curtain/ice dampers and holds it open.
Diagnostics SYMPTOMS Bin Switch Fails Open • The ice machine will not start an ice making cycle and the display indicates “Full Bin”. • The ice machine displays “Full Bin Remove Ice” in the clean cycle. Bin Switch Fails Closed • When running a “Long Harvest” alert is displayed. • May be off on a E02 Long Harvest. • The harvest cycle continues after ice opens and closes the ice damper (harvest cycle is 7 minutes). • A curtain fault is displayed in the event log.
DIAGNOSTICS 1. Verify bin switch, curtain/damper and curtain/damper magnet are in place and navigate to Inputs. • Menu/Service/Diagnostics/Inputs 2. Open and close the ice damper(s) repeatedly while observing the display and control board lights. A. Curtain switch cycles open/closed - The display indicates open/closed and the control board light energizes/de-energizes - Bin switch is operating normally B.
WATER LEVEL CONTROL CIRCUITRY FUNCTION The water level probe controls the water level by sensing whether water is or is not contacting the water level probe. The water level probe has three sensing probes. Two probes are equal in length and are used to measures conductivity for diagnostics, ice clarity and water miser options. Factory default settings measure resistance from both long probes to the short probe. SPECIFICATIONS Freeze Cycle Water Level Setting The water level is not adjustable.
Prechill & Freeze Cycle Operation The water inlet valve energizes and de-energizes in conjunction with the water level probe located in the water trough. • The water inlet valve is ON when there is no water in contact with the water level probes. • The water inlet valve turns OFF after water contacts the water level probes for 6 continuous seconds. • The water inlet valve can cycle ON and OFF once in the prechill and up to two times in the freeze cycle.
Diagnostics Important The following occurs when the reverse osmosis (R.O.) option has been enabled and then disabled (i.e. placed back into factory default) and the jumper has not been reset to the 45 second factory default position. A. The higher water level probe sensitivity will remain active see “Reverse Osmosis or Deionized Water Usage” on page 148. B. The control board will generate Water-Level probe faults on every cycle. C. The control board initiates a “Safe-Mode” every other cycle.
3. Disconnect the water level probe wiring harness from the control board and ohm harness and water level probe. Normal readings will show no resistance Twisted Wire Black Red Short Probe Ohm Water Level Probe and Wiring Harness WATER LEVEL PROBE CIRCUIT CHECK AT CONTROL BOARD Wait until prechill cycle starts, then jumper water level probe connections (Red/Black) on the control board. 150 A. Sensing displays and the water stops. Repair wire or replace water level probe. B.
ICE THICKNESS PROBE (INITIATES HARVEST) FUNCTION The ice thickness probe senses ice on the evaporator and signals the control board to start a harvest cycle. SPECIFICATIONS Freeze Time Lock-In Feature The ice machine control system incorporates a 6 minute freeze time lock-in feature. This prevents the ice machine from short cycling in and out of harvest. Maximum Freeze Time The maximum freeze time is 35 minutes at which time the control board automatically initiates a harvest sequence.
Ice Thickness Check The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3 mm). NOTE: Initial gap should be set with the ice machine off. Verify the water curtain/splash shields are in place when performing this check. It prevents water from splashing out of the water trough. Remove the curtain to make an adjustment, then replace immediately after the adjustment is made. 1. Inspect the bridge connecting the cubes. It should be about 1/8" (3 mm) thick. 2.
Ice Thickness Probe Diagnostics 1. Perform Control Board Self Check and insure the internal ITP circuit passes before proceeding. (Menu/Service/Diagnostics/Control Board/Self Check) • Ice Thickness Circuit: Pass = Continue with step #2. • Ice Thickness Circuit: Fail = Change control board. 2. Remove all ice from the evaporator when present. 3. Press the On/Off button and turn off the ice machine. 4. Disconnect power to the ice machine at the main disconnect. 5.
The initial numbers displayed are constantly changing and are greater than 3000. When the initial reading is 300 or lower and the tap test reading exceeds the initial reading by 3000 or more, the ice thickness probe and control board are both operating correctly. The initial numbers displayed do not change or initial numbers did not increase by 3000 during tap test. • Verify the ice thickness probe connector is properly plugged into the board and the ice thickness probe wiring is correct.
BIN LEVEL PROBE The bin level probe accessory will place the ice machine in a full bin cycle when ice lowers the temperature to 36°F or less. A lower ice level in dispensers will prevent overfilling or dispense wheel or motor damage. • The bin probe reads actual temperature and must be connected to the T5 terminal on the control board. • The control board recognizes the bin level probe automatically when installed.
Troubleshooting Refer to normal operation before troubleshooting - The T5 thermistor reading must indicate 36°F or less in the freeze cycle and throughout the harvest cycle to shutoff on full bin at the end of the harvest cycle. View the T5 thermistor temperature on the touch screen (menu/service/diagnostics/temperatures). PROBE SHORTED - TEMPERATURE DISPLAYED IS ABOVE 400°F: A shorted bin level probe wire/thermistor will indicate a temperature higher than 400°F.
THERMISTORS FUNCTION Thermistor resistance values change with temperature. The value supplied to the control board is used to identify temperature at the thermistor location.
Thermistor Matrix Four thermistors are standard on the ice machine. They are labeled T1, T2, T3, T4.
TEMPERATURE SENSOR LOCATION REMOTE AIR COOLED CONDENSER MODELS 30" Models with 1 evaporator, 1 evaporator circuit and a remote air cooled condenser T1 - Receiver Inlet T2 - Compressor Discharge T3 - Evaporator Inlet T4 - Evaporator Outlet 30" & 48" Models with 1 evaporator, 2 evaporator circuits and a remote air cooled condenser T1 - Receiver Inlet T2 - Compressor Discharge T3 - Evaporator Outlet for second evaporator circuit T4 - Evaporator Outlet for first evaporator circuit Part Number: 000015430 Rev 02
SYMPTOM Alert icon on the display and the alert indicates a T1, T2, T3, or T4 Fault. CHECK PROCEDURE Navigate to Menu/Service/Data/Real Time data/Time & Temperature NOTE: An open thermistor will display less than -10°F (-23°C) and a shorted thermistor will display higher than 400°F (204°C). Thermistor Test 1. Disconnect thermistor from control board and measure resistance. 2. Measure temperature at the thermistor. 3.
HIGH PRESSURE CUTOUT (HPCO) CONTROL FUNCTION Stops the ice machine if subjected to excessive high-side pressure. The HPCO control is normally closed, and opens on a rise in discharge pressure.
CHECK PROCEDURE Symptom #1 Machine is off and the display indicates an E5 HPC Trip in the Alert Log. 1. Install a manifold gauge set. 2. Start a new freeze cycle by cycling the On/Off button. 3. Run the system to see if the control trips at the rated pressure. If HPCO opens at a pressure significantly lower or higher than the control setting replace the HPCO. 4. If the control opens at the correct pressure find the root cause - Fan motor, dirty condenser, refrigeration system issue, etc.
Symptom #2 Machine is running and the display has an alert indication. 1. The display indicates an E5 HPC Trip in the Alert Log. Open the event and view when and how often HPCO Fault has occurred. 2. If this is a one time event it may be intermittent and caused by conditions around the unit changing. For example: High ambient temperature, water turned off to condenser (water cooled unit) etc. 3. Run the system to see if the control trips at the rated pressure.
FAN CYCLE CONTROL FUNCTION Cycles the fan motor on and off to maintain proper operating discharge pressure. The fan cycle control closes on an increase, and opens on a decrease in discharge pressure. SPECIFICATIONS Model IT0300/IT0420/IT0500 IT0620/IT0750/IT0900 IT1200/IT1500/IT1900 IF0300/IF0600/IF0900 Specifications Cut-In (Close) Cut-Out (Open) 335 psig ±5 (2310 kPa ±34) 275 psig ±5 (1896 kPa ±34) 250 psig ±5 (1723 kPa ±34) 200 psig ±5 (1379 kPa ±34) CHECK PROCEDURE 1.
HARVEST ASSIST AIR PUMP FUNCTION The air pump helps break the vacuum between the sheet of ice and the evaporator which results in shorter harvest cycles. SPECIFICATIONS 115 Volt or 230 Volt - matches the ice machine voltage. CHECK PROCEDURE 1. The air pump is wired in parallel with the harvest valve - Verify the ice machine is in the harvest cycle and the harvest valve is energized. 2.
COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor does not start or will trip repeatedly on overload. Check Resistance (Ohm) Values NOTE: Compressor windings can have very low ohm values. Use a properly calibrated meter. Perform the resistance test after the compressor cools. The compressor dome should be cool enough to touch (below 120°F/49°C) to assure that the overload is closed and the resistance readings will be accurate. SINGLE PHASE COMPRESSORS 1.
CHECK MOTOR WINDINGS TO GROUND Check continuity between all three terminals and the compressor shell or copper refrigeration line. Scrape metal surface to get good contact. If continuity is present, the compressor windings are grounded and the compressor should be replaced. COMPRESSOR DRAWING LOCKED ROTOR To determine if the compressor is seized, check the amp draw while the compressor is trying to start. The two likely causes of this are a defective starting component or a mechanically seized compressor.
DIAGNOSING START COMPONENTS If the compressor attempts to start, or hums and trips the overload protector, check the start components before replacing the compressor. Capacitor Visual evidence of capacitor failure can include a bulged terminal end or a ruptured membrane. Do not assume a capacitor is good if no visual evidence is present. A good test is to install a known good substitute capacitor. Use a capacitor tester when checking a suspect capacitor.
PTCR The PTCR allows current to flow through the start winding at compressor startup. Current flow heats the ceramic discs in the PTCR. The electrical resistance increases with temperature and stops all except a trickle of current flow through the start winding. The small flow of current keeps the PTCR hot (260°F/127°C) and the start winding out of the circuit.
PTCR Operation Check 1. Visually inspect the PTCR. Check for signs of physical damage. NOTE: The PTCR case temperature may reach 210°F (100°C) while the compressor is running. This is normal. Do not change a PTCR just because it is hot. 2. Wait at least 10 minutes for the PTCR to cool to room temperature. 3. Remove the PTCR from the ice machine. 4. Measure the resistance of the PTCR as shown.
Refrigeration Components HEAD PRESSURE CONTROL VALVE Manitowoc remote systems require head pressure control valves with special settings. Replace defective head pressure control valves only with “original” Manitowoc replacement parts. Refrigerant Charge Verification The correct amount of refrigerant (name plate charge) is required to operate correctly at all ambient conditions.
Freeze Cycle Operation All Remote Condenser Models The headmaster is non adjustable. At ambient temperatures of approximately 70°F (21°C) or above, refrigerant flows through the valve from the condenser to the receiver inlet. At temperatures below this (or at higher temperatures if it is raining), the head pressure control dome’s nitrogen charge closes the condenser port and opens the bypass port from the compressor discharge line.
NOTE: A head pressure control valve that will not bypass, will function properly with condenser air temperatures of approximately 70°F (21°C) or above. When the temperature drops below 70°F (21°C), the head pressure control valve fails to bypass and the ice machine malfunctions. Lower ambient conditions can be simulated by rinsing the condenser with cool water during the freeze cycle.
Harvest Cycle REMOTE CONDENSER The head pressure control cycles into full bypass due to the pressure drop when the harvest valve opens. Refrigerant flows from the compressor to the evaporator through the harvest valve and the head pressure valve is out of the circuit. Undercharge Symptoms • Long Freeze or Long Harvest in control board memory and an alert indicating Long Freeze or Long Harvest. • Harvest cycle suction pressure is low. • Harvest cycle discharge pressure is low.
HARVEST PRESSURE REGULATING (HPR) SYSTEM REMOTE CONDENSER ONLY GENERAL The harvest pressure regulating (HPR) system includes: • Harvest pressure regulating solenoid valve (HPR solenoid). This is an electrically operated valve which opens when energized, and closes when de-energized. The HPR solenoid valve is wired in parallel with the harvest valve. • Harvest pressure regulating valve (HPR valve).
HPR DIAGNOSTICS Steps 1 through 5 can be quickly verified without attaching a manifold gauge set or thermometer. All questions must have a yes answer to continue the diagnostic procedure. 1. Liquid line warm? (Body temperature is normal) If liquid line is cooler than body temperature, refer to “Head Pressure Control Valve” on page 171. 2. Ice fill pattern normal? Refer to “Ice Formation Pattern” on page 110. 3. Freeze time normal? “Cycle Times/24-Hour Ice Production/Refrigerant Pressure Charts” on page 201.
5. Discharge line temperature is greater than 150°F (66°C) [22" Models Only - 140°F (60°C)] at the end of the freeze cycle? See “Discharge Line Temperature Analysis” on page 123. 6. Connect refrigeration manifold gauge set to the access valves on the front of the ice machine. Establish baseline by recording suction and discharge pressure and freeze & harvest cycle times. (Refer to “Cycle Times/24-Hour Ice Production/Refrigerant Pressure Charts” on page 201 for data collection detail.) 7.
WATER REGULATING VALVE Water-Cooled Models Only FUNCTION The water regulating valve maintains the freeze cycle discharge pressure. CHECK PROCEDURE 1. Determine if the head pressure is high or low (refer to cycle time/24 hour ice production and operational pressure chart for the model you are servicing). 2. Verify the condenser water meets specifications. 3. Adjust valve to increase or decrease discharge pressure. 4. Using the information gathered, refer to the list for diagnosis.
Refrigerant Recovery/Evacuation DEFINITIONS Recover To remove refrigerant, in any condition, from a system and store it in an external container, without necessarily testing or processing it in any way. Recycle To clean refrigerant for re-use by oil separation and single or multiple passes through devices, such as replaceable core filter-driers, which reduce moisture, acidity and particulate matter. This term usually applies to procedures implemented at the field job site or at a local service shop.
REFRIGERANT RE-USE POLICY Manitowoc recognizes and supports the need for proper handling, re-use, and disposal of refrigerants. Manitowoc service procedures require recapturing refrigerants, not venting them to the atmosphere. It is not necessary, in or out of warranty, to reduce or compromise the quality and reliability of your customers’ products to achieve this. Notice Manitowoc assumes no responsibility for use of contaminated refrigerant.
4. Recovered refrigerant must come from a “contaminant-free” system. To decide whether the system is contaminant free, consider: • Type(s) of previous failure(s) • Whether the system was cleaned, evacuated and recharged properly following failure(s). • Whether the system has been contaminated by this failure. • Compressor motor burnouts and improper past service prevent refrigerant re-use. Refer to “Determining Severity Of Contamination” on page 190 to test for contamination. 5.
SELF-CONTAINED MODEL PROCEDURE Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommendations. Notice Manitowoc assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company. Notice Replace the liquid line drier after recovering the refrigerant and before evacuating and recharging.
Self-Contained Recovery/Evacuation 1. Press the On/Off button and cycle the ice machine off. 2. Install manifold gauge, scale and recovery unit or twostage vacuum pump and open high, low and charging ports. 3. Perform recovery or evacuation: A. Recovery: Operate the recovery unit as directed by the manufacturer’s instructions. B. Evacuation prior to recharging: Pull the system down to 500 microns. Then, allow the pump to run for an additional half hour.
Self-Contained Charging Procedures Notice The charge is critical on all Manitowoc ice machines. Use a scale to ensure the proper charge is installed. 1. Be sure the ice machine is off. 2. Isolate the vacuum pump valve, low side and high side access valves from the refrigeration system. The refrigerant charging access valve remains open. 3. Open the refrigerant cylinder and add the proper refrigerant charge (shown on nameplate) through the liquid line drier.
7. Make sure that all of the vapor in the charging hoses is drawn into the ice machine before disconnecting the charging hoses. A. Run the ice machine in freeze cycle. B. Remove the high side low loss fitting from the liquid line filter drier. C. Open the high and low side valves on the manifold gauge set. Any refrigerant in the lines will be pulled into the low side of the system. D. Allow the pressures to equalize while the ice machine is in the freeze cycle. E.
REMOTE CONDENSER MODEL PROCEDURE Refrigerant Recovery/Evacuation Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommendations. Notice Manitowoc Ice assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company. Notice Replace the liquid line drier after recovering the refrigerant and before evacuating and recharging.
CONNECTIONS Notice Recovery/evacuation of a remote system requires connections at four points for complete system evacuation. Make these connections: • Suction side of the compressor through the suction service valve. • Discharge side of the compressor through the discharge service valve. • Receiver outlet service valve, which evacuates the area between the check valve in the liquid line and the liquid line solenoid.
REMOTE CONDENSER RECOVERY/EVACUATION 1. Press the On/Off button to stop the ice machine. 2. Install manifold gauge set, scale and recovery unit or two-stage vacuum pump. 3. Open high and low side on the manifold gauge set. 4. Perform recovery or evacuation: A. Recovery: Operate the recovery unit as directed by the manufacturer’s instructions. B. Evacuation prior to recharging: Pull the system down to 500 microns. Then, allow the pump to run for an additional hour.
Remote Charging Procedures 1. Close the vacuum pump valve and the low side manifold gauge valve. 2. Open the refrigerant cylinder and add the proper refrigerant charge (shown on nameplate) into the system high side (receiver outlet valve/liquid line drier and/or liquid line quick-connect fitting). 3. If the high side does not take the entire charge, close the high side on the manifold gauge set and start the ice machine.
System Contamination Clean-Up General This section describes the basic requirements for restoring contaminated systems to reliable service. Notice Manitowoc Ice assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company. DETERMINING SEVERITY OF CONTAMINATION System contamination is generally caused by either moisture or residue from compressor burnout entering the refrigeration system.
Contamination Cleanup Chart Symptoms/Findings Required Cleanup Procedure No symptoms or suspicion of Normal evacuation/recharging contamination procedure Moisture/Air Contamination symptoms Refrigeration system open to atmosphere for longer than 15 minutes Mild contamination cleanup Refrigeration test kit and/ procedure or acid oil test shows contamination Leak in water cooled condenser No burnout deposits in open compressor lines Mild Compressor Burnout symptoms Oil appears clean but smells acrid Mild cont
CLEANUP PROCEDURE Mild System Contamination 1. Replace any failed components. 2. If the compressor is good, change the oil. Pour the oil from the compressor into a graduated vessel and replace with the same amount removed. 3. Replace the liquid line drier. NOTE: If the contamination is from moisture, use heat lamps during evacuation. Position them at the compressor, condenser and evaporator prior to evacuation. Do not position heat lamps too close to plastic components, or they may melt or warp.
4. Follow the normal evacuation procedure, except replace the evacuation step with the following: A. Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig (35 kPa, .35 bar). B. Pull vacuum to 500 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig (35 kPa, .35 bar). C. Change the vacuum pump oil. D. Pull vacuum to 500 microns.
Severe System Contamination 1. Remove the refrigerant charge. 2. Remove the compressor and inspect the refrigeration lines. If burnout deposits are found, install a new harvest valve, replace the manifold strainer, TXV and harvest pressure regulating valve. 3. Wipe away any burnout deposits from suction and discharge lines at compressor. 4. Sweep through the open system with dry nitrogen. Important Refrigerant sweeps are not recommended, as they release refrigerant into the atmosphere. 5.
9. Follow the normal evacuation procedure, except replace the evacuation step with the following: A. Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig (35 kPa, .35 bar). B. Change the vacuum pump oil. C. Pull vacuum to 500 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig (35 kPa, .35 bar). D. Change the vacuum pump oil. E. Pull vacuum to 500 microns.
Liquid Line Filter-Driers The filter-driers used on Manitowoc ice machines are manufactured to Manitowoc specifications and have an access fitting for charging with refrigerant. A Manitowoc drier also has dirt-retaining filtration, with fiberglass filters on both the inlet and outlet ends. This is very important because ice machines have a back-flushing action that takes place during every Harvest cycle. A Manitowoc filter-drier has high moisture and acid removal capability.
Replacing Pressure Controls Without Removing Refrigerant Charge This procedure reduces repair time and cost. Use it when any of the following components require replacement, and the refrigeration system is operational and leak-free. • Fan cycle control (air cooled only) • Water regulating valve (water cooled only) • High pressure cut-out control • High side service valve 1. Disconnect power to the ice machine. 2. Follow all manufacturer’s instructions supplied with the pinch-off tool.
Total System Refrigerant Charge This information is for reference only. Refer to the ice machine serial number tag to verify the system charge. Serial plate information overrides information listed on these pages. SELF-CONTAINED AIR & WATER COOLED Air Cooled Water Cooled IF0300 Refrigerant Type R404A 15 oz (.43 kg) 12 oz (.34 kg) IT0300 R410A 14 oz (.40 kg) 12 oz (.34 kg) IT0420 R410A 18 oz (.51 kg) 18 oz (.51 kg) IT0450 R410A 18 oz (.51 kg) 15 oz (.43 kg) IT0500 R410A 19 oz (.
REMOTE CONDENSER Model Refrigerant Type IF0500 R404A IT0500 R410A IF0600 R404A IF0900 60 Hz IF0900 50 Hz IT1200 Bristol Samsung R404A R404A R410A IT1500 R410A IT1900 R410A Remote 6 lb (2.72 kg) 6 lb (2.72 kg) 6.5 lb (2.94 kg) 6.5 lb (2.94 kg) 7 lbs (3.18 kg) 7.5 lb (3.4 kg) 8.0 lbs (3.62 kg) 7.5 lb (3.4 kg) 8 lb (3.62 kg) Part Number: 000015430 Rev 02 5/20 Additional Refrigerant for Line Sets 51'-100' 1.5 lb (680 g 1.
THIS PAGE INTENTIONALLY LEFT BLANK 200 Part Number: 000015430 Rev 02 5/20
Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts These charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • Production and cycle times are for dice cube - Half dice cube cycle times can be 2 - 3 minutes faster, depending on model and ambient temperature. • Regular cube production derate is 7%. • Ice production checks that are within 10% of the chart are considered normal.
IF0300 SERIES IF0300A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.6-11.5 10.6-12.6 11.8-14.0 13.2-15.7 15.0-17.7 70/21 10.8-12.9 12.3-14.6 13.9-16.4 14.6-17.3 15.8-18.7 90/32 12.3-14.6 13.5-16.0 15.0-17.7 16.2-19.2 17.7-20.9 Harvest Time ¹ 1-2.
IF0300W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 10.0-11.9 10.2-12.2 10.4-12.4 10.6-12.6 10.8-12.9 70/21 11.1-13.2 11.3-13.4 11.8-14.0 11.8-14.0 11.8-14.0 90/32 12.3-14.6 12.3-14.6 12.6-15.0 12.6-15.7 12.9-15.3 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0300 SERIES IT0300A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.6-11.5 10.6-12.6 11.8-14.0 13.2-15.7 15.0-17.7 70/21 10.8-12.9 12.3-14.6 13.9-16.4 14.6-17.3 15.8-18.7 90/32 12.3-14.6 13.5-16.0 15.0-17.7 16.2-19.2 17.7-20.9 Harvest Time ¹ 1-2.
IT0300W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 10.0-11.9 10.2-12.2 10.4-12.4 10.6-12.6 10.8-12.9 70/21 90/32 11.1-13.2 12.3-14.6 11.3-13.4 12.3--14.6 11.8-14.0 12.3-15.0 11.8-14.0 12.6-15.7 11.8-14.0 12.9-15.3 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0420 SERIES IT0420A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.9-10.4 9.9-11.6 10.7-12.5 12.1-14.1 12.9-15.0 70/21 10.4-12.2 11.7-13.7 11.7-13.7 13.1-15.3 14.0-16.3 90/32 13.1-15.3 13.6-15.8 13.8-16.1 14.3-16.6 14.8-17.2 Harvest Time ¹ 1-2.
IT0420W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.3-10.8 9.5-11.1 9.8-11.4 10.0-11.7 10.3-12.0 70/21 10.2-11.9 10.4-12.2 10.7-12.5 11.1-12.9 11.4-13.3 90/32 11.6-13.5 11.7-13.7 11.9-13.9 12.5-14.5 12.3-14.3 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0450 SERIES IT0450A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.9-10.4 9.9-11.6 10.7-12.5 11.7-13.7 13.1-15.3 70/21 9.9-11.6 10.9-12.7 12.1-14.1 13.3-15.5 14.3-16.6 90/32 10.9-12.7 11.9-13.9 13.1-15.3 14.6-16.9 15.1-17.5 Harvest Time ¹ 1-2.
IT0450W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.9-11.6 10.2-11.9 10.3-12.0 10.4-12.2 10.7-12.5 70/21 11.1-12.9 11.6-13.5 12.1-14.1 12.5-14.5 12.9-15.0 90/32 12.1-14.1 12.5-14.5 12.9-15.0 13.3-15.5 14.3-16.6 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0500 SERIES IT0500A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 11.2-12.9 12.3-14.1 13.2-15.1 14.7-16.8 15.5-17.7 70/21 13.1-15.0 14.5-16.5 15.1-17.2 16.9-19.3 18.0-20.5 90/32 14.5-16.5 14.9-17.0 16.9-19.3 18.6-21.2 20.2-23.1 Harvest Time ¹ 1-2.
IT0500W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 11.7-13.5 12.3-14.1 12.4-14.3 12.6-14.4 12.9-14.8 70/21 13.9-15.9 14.5-16.5 15.1-17.2 15.5-17.7 15.9-18.2 90/32 15.9-18.2 16.4-18.7 16.9-19.3 17.4-19.9 18.0-20.5 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0500N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C -20/-29 to 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 11.5-13.2 12.2-13.9 12.6-14.4 13.1-15.0 13.6-15.5 70/21 12.2-13.9 12.6-14.4 13.2-15.1 14.1-16.1 14.5-16.5 90/32 13.6-15.5 14.1-16.1 14.7-16.8 15.3-17.5 15.9-18.2 Harvest Time ¹ 1-2.
IF0500N IF0500N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C -20/-29 to 70/21 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 12.3-14.1 12.4-14.3 12.8-14.9 13.3-15.4 70/21 12.7-14.7 13.9-15.9 14.1-16.3 14.5-16.7 90/32 13.7-15.8 14.7-17.0 15.2-17.7 16.0-18.5 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0600 SERIES IF0600A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 Freeze Time Water Temperature °F/°C 50/10 7.6-9.0 8.8-10.4 9.7-11.4 11.1-13.1 70/21 9.5-11.2 9.9-11.7 11.0-12.9 12.3-14.4 90/32 10.2-12.0 10.5-12.3 11.4-13.4 12.8-15.0 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0600W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 Freeze Time Water Temperature °F/°C 50/10 7.6-9.0 8.8-10.4 9.6-10.6 9.1-10.7 70/21 9.0-10.6 9.1-10.7 9.1-10.7 9.5-11.2 90/32 9.7-11.4 9.9-11.7 9.9-11.7 10.2-12.0 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0600N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C Freeze Time Water Temperature °F/°C 50/10 -20/-29 to 70/21 7.9-9.4 80/27 9.0-10.6 90/32 9.1-10.7 100/38 9.9-11.7 110/43 10.9-12.8 70/21 9.9-11.7 9.9-11.7 9.9-11.7 10.9-12.8 12.0-14.0 90/32 10.5-12.3 10.7-12.6 10.7-12.6 11.7-13.7 12.8-15.0 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0620 SERIES IT0620A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.2-8.5 7.9-9.3 8.5-10.0 9.4-11.0 9.9-11.6 70/21 7.9-9.3 8.7-10.2 9.4-11.0 10.4-12.2 11.1-12.9 90/32 8.2-9.6 9.0-10.6 9.8-11.4 10.9-12.7 11.6-13.5 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0620W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.6-8.9 7.7-9.0 7.7-9.1 7.9-9.3 8.1-9.5 70/21 8.7-10.2 9.0-10.6 9.4-11.0 9.6-11.3 9.9-11.6 90/32 9.6-11.3 10.0-11.7 10.4-12.2 10.7-12.5 11.1-12.9 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0750 SERIES IT0750A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.2-8.6 7.9-9.4 8.6-10.1 9.5-11.2 10.2-12.0 70/21 8.1-9.5 8.6-10.1 9.5-11.2 10.6-12.5 11.1-13.1 90/32 8.8-10.4 9.3-10.9 10.1-11.9 11.1-13.1 11.8-13.9 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT0750W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.0-8.3 7.0-9.3 7.1-8.4 7.2-8.6 7.4-8.7 70/21 7.2-8.6 7.4-8.7 7.6-9.0 7.8-9.2 7.9-9.4 90/32 8.2-9.7 8.5-10.0 8.7-10.3 8.9-10.5 9.4-11.1 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0900 SERIES IF0900A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 Freeze Time Water Temperature °F/°C 50/10 8.7-10.3 9.7-11.5 10.5-12.4 11.3-13.4 70/21 10.2-12.1 10.5-12.4 11.9-14.1 12.3-14.6 90/32 10.8-12.8 11.1-13.1 12.2-14.5 12.7-15.0 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0900W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.1-10.8 10.2-12.1 10.4-12.3 11.6-12.5 11.3-13.3 70/21 10.3-12.2 10.4-12.3 11.3-13.3 11.6-13.7 12.2-14.5 90/32 10.9-12.9 11.1-13.1 11.4-13.5 11.9-14.1 13.0-15.4 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IF0900N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C Freeze Time Water Temperature °F/°C 50/10 -20/-29 to 70/21 9.4-11.1 80/27 9.8-11.6 90/32 10.4-12.3 100/38 10.9-12.9 110/43 11.5-13.6 70/21 10.2-12.1 10.4-12.3 10.7-12.7 11.6-13.7 12.2-14.5 90/32 11.0-12.9 11.3-13.3 11.7-13.9 12.2-14.5 13.0-15.4 Harvest Time ¹ 0.75-2.
IT0900 SERIES IT0900A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.0-10.7 9.5-11.3 10.3-12.2 11.6-13.7 14.3-16.9 70/21 10.2-12.1 10.6-12.5 11.3-13.4 12.9-15.2 15.3-18.1 90/32 11.2-13.2 11.4-13.5 12.2-14.5 14.0-16.5 16.0-18.8 Harvest Time ¹ 1-2.
IT0900W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 9.9-11.8 10.0-11.9 10.1-12.0 10.2-12.1 10.3-12.2 70/21 10.4-12.3 10.6-12.5 11.9-14.1 12.2-14.5 12.8-15.1 90/32 12.0-14.2 12.2-14.5 12.5-14.7 12.9-15.2 13.3-15.6 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1200 SERIES IT1200A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.5-8.4 8.5-9.4 9.1-10.1 9.9-11.0 11.1-12.3 70/21 8.1-9.0 9.5-10.5 9.9-10.9 10.8-12.0 12.1-13.4 90/32 9.6-10.6 10.1-11.2 10.6-11.7 12.2-13.4 13.3-14.7 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1200W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.5-9.4 8.5-9.5 8.6-9.5 8.6-9.6 8.7-9.6 70/21 9.6-10.7 9.8-10.9 10.5-11.6 10.6-11.8 10.7-11.8 90/32 10.6-11.7 10.6-11.8 10.7-11.8 10.8-12.0 11.0-12.2 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1200N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.1-8.9 8.6-9.5 9.2-10.2 10.6-11.8 12.6-8.4 70/21 9.1-10.1 9.6-10.6 9.8-10.8 10.8-12.0 12.8-14.1 90/32 10.0-11.1 10.4-11.5 11.0-12.2 12.4-13.7 14.3-15.7 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1500 SERIES IT1500A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 6.7-7.7 7.3-8.4 9.0-10.2 9.9-11.3 12.5-14.2 70/21 7.2-8.3 8.1-9.3 9.7-11.0 10.7-12.2 13.1-14.9 90/32 8.6-9.8 9.5-10.8 10.9-12.4 12.6-14.3 14.4-16.3 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1500W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.1-8.1 7.6-8.7 7.6-8.8 7.7-8.8 7.8-8.9 70/21 7.4-8.5 7.8-8.9 8.9-10.2 9.4-10.7 9.6-10.9 90/32 9.2-10.5 9.4-10.7 9.6-11.0 9.7-11.1 9.9-11.3 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1500N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 7.1-8.2 7.6-8.7 8.1-9.3 8.8-10.0 8.9-10.2 70/21 7.6-8.8 8.1-9.2 8.8-10.0 9.3-10.6 9.9-11.3 90/32 8.8-10.0 9.3-10.6 9.9-11.3 10.5-12.0 11.0-12.7 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1900 SERIES IT1900A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.5-9.7 8.9-10.2 10.0-11.4 12.0-13.6 14.8-16.8 70/21 9.7-11.0 10.9-12.4 12.0-13.6 13.8-15.6 16.1-18.2 90/32 10.4-11.8 11.7-13.4 13.5-15.3 15.7-17.8 17.0-19.3 Harvest Time ¹ 1-2.
IT1900W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Around Ice Machine °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.7-9.9 8.9-10.1 9.0-10.3 9.1-10.4 9.4-10.7 70/21 9.5-10.8 9.8-11.1 10.4-11.8 11.0-12.6 11.4-13.0 90/32 11.3-12.8 11.7-13.2 11.9-13.6 12.2-13.9 12.4-14.0 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
IT1900N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Entering Condenser °F/°C 70/21 80/27 90/32 100/38 110/43 Freeze Time Water Temperature °F/°C 50/10 8.9-10.1 9.4-10.7 10.2-11.6 11.7-13.4 13.7-15.5 70/21 9.4-10.7 10.0-11.4 10.8-12.3 12.6-14.3 14.0-15.8 90/32 11.0-12.5 11.8-13.4 12.9-14.6 14.0-15.8 14.3-16.2 Harvest Time ¹ 1-2.5 1 Times in minutes 24 HOUR ICE PRODUCTION Air Temp.
Diagrams Wiring Diagrams The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine you are servicing. nWarning Always disconnect power before working on electrical circuitry. Some components are wired differently on energy efficient machines. Please verify your model number (page 19) to reference the correct diagrams.
IF0300/IT0420/IT0450/IT0500/IT0620/IT0750 1PH AIR/WATER Self Contained Air & Water-cooled L1 L2 GND 3 21 (8) WHT (9) GRN 21 56 (20) BLU (21) BLU (99)WHT 19 34 (22) WHT 1 34 (25) RED (26) WHT 42 (77) RED (61) RED 22 (60) BLK (76) BLK 54 41 57 (98) GRY 28 (80) WHT 55 58 (57) GRY (81) WHT (58) PRPL (59) ORG 49 (56) WHT 17 31 (74) WHT (88) (89) (42) PRPL PRPL ORG (89A) PRPL (75)WHT (55) BLK (75A)WHT 32 (49) RED L1 18 5 (C) (R) (48) BLK 11 47 YEL (S) 7 (51) ORG (85) B
IF0300/IT0420/IT0450/IT0500/IT0620/IT0750 1ph Air/Water Number 1 3 5 7 9 11 14 15 17 18 19 21 22 25 28 31 32 34 41 42 49 54 55 56 57 58 Component Air Pump Harvest Assist Bin Switch Compressor Compressor Overload Compressor PTCR Compressor Run Capacitor Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Disconnect Switch - Marine Models Only Touchscreen Fan Cycle Control Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For Detai
IT0500/IT1200 - 1PH REMOTE AIR-COOLED Remote Air-cooled L1 L2 GND 3 (8) WHT (9) GRN 56 (20) BLU (21) BLU (99)WHT 19 34 (22) WHT 1 34 (25) RED (26) WHT 42 (77) RED (61) RED 22 (76) BLK (60) BLK (80) WHT 55 54 41 57 (98) GRY 28 58 (57) GRY 45 (58) PRPL 49 (59) ORG (56) WHT 17 31 (81) WHT (74) WHT (88) (89) (42) PRPL PRPL ORG (89A) PRPL (75)WHT (55) BLK (75A)WHT 32 RED L1 18 YEL (R) (51) ORG (S) BLK 7 (46) BLK F1 WHT 000014010_00 238 5 (C) (53) RED 8 5 4 2 1 R
IT0500/IT1200 - 1ph Remote Number 1 3 5 7 8 11 12 14 15 17 18 19 22 28 31 32 34 41 42 45 49 54 55 56 57 58 Component Air Pump Harvest Assist Bin Switch Compressor Compressor Overload Compressor Potential Relay Compressor Run Capacitor Compressor Start Capacitor Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Touchscreen Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For Detail Solenoid Valve - Harvest Left Hand Solenoid Va
IF0600/IF0900/IT0900/IT1200 - 1PH AIR/WATER Self Contained Air & Water-cooled L1 56 GND (20) BLU 1A 3 21 L2 (99) WHT (21) BLU RED WHT (22) WHT 1 (8) WHT (9) GRN WHT RED 19 34 21 42 (61) RED 34 (77) RED 43 22 RED (80) WHT WHT 55 54 41 57 (76) BLK (60) BLK (81) WHT 58 (57) GRY (98) GRY 28 49 (89) PRPL (88) PRPL (58) PRPL (42) ORG 17 31 (75) WHT (89A) PRPL (56) WHT (81) WHT (75A) WHT 32 (55) BLK RED 5 YEL (S) (R) 7 18 11 (50) BLU (C) (46) ORG (46) BLK (45)YE
IF0600/IF0900/IT0900/IT1200 - 1ph Air/Water Number 1 1A 3 5 7 9 9A 11 14 15 17 18 19 21 22 25 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Air Pump Harvest Assist (When used) Bin Switch Compressor Compressor Overload Compressor PTCR (Two Terminal) Compressor PTCR (Three Terminal) When Used Compressor Run Capacitor Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Disconnect Switch - Marine Models Only Touchscreen Fan Cycle Cont
IF0600/IF0900/IT0900/IT1200 - 3PH AIR/WATER Self Contained Air & Water-cooled L3 L2 L1 56 GND (20) BLU (99) WHT (21) BLU 1A 3 RED WHT 1 (8) WHT (9) GRN 19 34 21 (77) RED 43 22 RED 54 41 57 (22) WHT 42 (61) RED 34 T3 T2 T1 WHT RED WHT (80) WHT 55 (60) BLK (76) BLK (81) WHT 58 (57) GRY (98) GRY 28 (58) PRPL 49 (89) PRPL (88) PRPL (42) ORG (81) WHT 17 31 (89A) PRPL (75) WHT (56) WHT (75A) WHT 32 (55) BLK (74) WHT 15 18 (51) ORG (T3) (T2) (T1) (85) BLK 25 (86
IF0600/IF0900/IT0900/IT1200 - 3ph Air/Water Number 1 1A 3 5 14 15 17 18 19 21 22 25 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Air Pump Harvest Assist (When used) Bin Switch Compressor Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Disconnect Switch - Marine Models Only Touchscreen Fan Cycle Control Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For Detail Solenoid Valve - Harvest Left Hand S
IT1500/IT1900 - 1PH AIR/WATER Self Contained Air & Water-cooled L1 56 GND (20) BLU RED BLK (8) WHT 1A RED (9) GRN 3 21 L2 (99) WHT (21) BLU WHT (22) WHT 1 WHT RED 19 34 21 42 (61) RED 34 (77) RED 43 22 RED (80) WHT WHT 55 54 41 57 (76) BLK (60) BLK (81) WHT 58 (57) GRY (98) GRY 28 49 (89) PRPL (88) PRPL (58) PRPL (42) ORG 17 31 (75) WHT (89A) PRPL (56) WHT (81) WHT (75A) WHT 32 25 RED (55) BLK RED 5 YEL (S) (R) 7 18 (46) BLK L1 (51) ORG (86) BLK 11 (50
IT1500/IT1900 - 1ph Air/Water Number 1 1A 3 5 7 9 9A 11 14 14a 15 17 18 19 21 22 25 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Air Pump Harvest Assist Bin Switch Compressor Compressor Overload Compressor PTCR (Two Terminal) When Used Compressor PTCR (Three Terminal) When Used Compressor Run Capacitor Condenser Fan Motor EC Fan Motor When Used 12 VDC Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Disconnect Switch - Marine Models Only Touchscr
IT1500/IT1900 - 3 PH AIR/WATER Self Contained Air & Water-cooled L3 L2 L1 56 GND (20) BLU (9) GRN 3 (99) WHT (21) BLU 1A RED WHT 1 (8) WHT 19 34 21 34 T3 T2 T1 WHT RED 42 (61) RED (77) RED 43 22 RED 54 41 57 (22) WHT WHT (80) WHT 55 (60) BLK (76) BLK (57) GRY (98) GRY 28 (58) PRPL 49 (81) WHT 58 (89) PRPL (88) PRPL (42) ORG (81) WHT 17 31 (89A) PRPL (75) WHT (56) WHT (75A) WHT 32 (55) BLK (74) WHT 18 14a (51) ORG (T3) (T2) (T1) 5 246 (86) BLK (85) BLK 2
IT1500/IT1900 - 3 PH Air/Water Self Contained Air & Water-cooled Number 1 1A 3 5 14 14a 15 17 18 19 21 22 25 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Air Pump Harvest Assist Bin Switch Compressor Condenser Fan Motor EC Fan Motor When Used 12 VDC Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Disconnect Switch - Marine Models Only Touchscreen Fan Cycle Control Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For
IF0500/IF0600/IF0900/IT1200/IF1500 - 1PH REMOTE Remote Condenser Air Cooled L1 56 GND (20) BLU L2 (22) WHT (21) BLU 3 1 RED (8) WHT (9) GRN WHT WHT RED 44 19 34 (82) WHT RED 43 34 (99) WHT RED WHT WHT 42 (61) RED 22 (77) RED (76) BLK (60) BLK 54 41 57 55 (57) GRY (98) GRY (80) WHT (81) WHT 58 45 28 (59) ORG (83) ORG 49 (89A) (42) PRPL ORG (88) PRPL (58) PRPL (89) PRPL 17 31 (74) WHT (75) WHT (56) WHT (81) WHT (75A)WHT 32 (55) BLK RED 5 YEL (S) (R) 18 L1 7 11 9
IF0500/IF0600/IF0900/IT1200/IF1500 - 1ph Remote Number 1 3 5 9 9A 14 15 17 18 19 22 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Bin Switch Compressor Compressor PTCR (Two Terminal) Compressor PTCR (Three Terminal) When Used Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Touchscreen Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For Detail Solenoid Valve - Harvest Left Hand Solenoid Valve - Har
IF0500/IF0600/IF0900/IT1200/IF1500 - 3PH REMOTE CONDENSER Remote Condenser Air Cooled L3 L2 L1 GND 3 (9) GRN (8) WHT 56 19 (20) BLU 34 (21) BLU 34 (99) WHT (25) RED (77) RED 22 (88) RED 1 42 43 (22) WHT (26) WHT (87) WHT (61) RED (76) BLK 54 41 57 28 (98) GRY 55 (80) WHT 58 (57) GRY (81) WHT (58) PRPL (56) WHT 17 31 49 (88) (89) (42) PRPL PRPL ORG (89A) PRPL (75)WHT (55) BLK 32 (75A)WHT (74) WHT 18 (51) ORG (T3) (T2) (T1) 5 250 (51) ORG 15 14 000013976_02 Part Number
IF0500/IF0600/IF0900/IT1200/IF1500 - 3ph Remote Number 1 3 5 9 14 15 17 18 19 22 25 28 31 32 34 41 42 43 49 54 55 56 57 58 Component Air Pump Harvest Assist Bin Switch Compressor PTCR Condenser Fan Motor Condenser Fan Motor Run Capacitor Contactor Coil Contactor Contacts Control Board Touchscreen Fan Cycle Control Fuse High Pressure Cutout Ice Thickness Probe LED See Control Board Schematic For Detail Solenoid Valve - Harvest Left Hand Solenoid Valve - Harvest Right Hand Thermistors Transformer Control Boa
Electronic Control Board 3 75 74 34-10 34-9 71 34-1 34-2 34-3 34-4 70 34-5 34-6 34-7 34-8 2 38 72 22 34 73 34 58 34 56 57 34 49-1 33 49-2 5 28 42 34 55 34 43 252 49-7 49-6 49-4 49-5 49-3 31 1 4 7 2 5 8 3 6 9 Part Number: 000015430 Rev 02 5/20
Electronic Control Board Schematic Number 2 3 5 22 28 31 33 34 34-1 34-2 34-3 34-4 34-5 34-6 34-7 34-8 34-9 34-10 38 42 43 49-1 49-2 49-3 49-4 49-5 49-6 49-7 55 56 57 58 70 71 72 73 74 75 Description IAuCs Bin Switch Compressor Contactor Coil Relay Touchscreen Fuse High Pressure Cutout Ice Thickness Probe LED - Relays LED - Display LED - Micro LED - Clean LED - Harvest LED - Ice Thickness Probe LED - High Water Probe LED - Low Water Probe LED - Display Bypass Is Active LED - Right Bin Switch LED - Left Bin
ELECTRICAL NOISE FILTER Filter is installed to the incoming line voltage power supply on Korean models.
Refrigeration Tubing Schematics SELF-CONTAINED AIR OR WATER-COOLED IF0300/IT0420/IT0450/IT0500/IT0620/IT0750 Self-Contained Air or Water-Cooled 5 6 8 1 4 Number 1 2 3 4 5 6 7 8 9 7 9 X 2 3 Component Compressor Condenser - Air or Water Cooled Receiver - Water Cooled Only Liquid Line Filter Drier Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Part Number: 000015430 Rev 02 5/20 255
IF0900/IT0900 Self-Contained Air or Water-Cooled 5 6 8 1 4 Number 1 2 3 4 5 6 7 8 9 256 7 9 X 2 3 Component Compressor Condenser - Air or Water Cooled Receiver - Water Cooled Only Liquid Line Filter Drier Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Part Number: 000015430 Rev 02 5/20
IT1200 Self-Contained Air or Water-Cooled 6 5 6 7 x 9 1 4 9 x 8 2 3 Number 1 2 3 4 5 6 7 8 9 Component Compressor Condenser - Air or Water Cooled Receiver - Water Cooled Only Liquid Line Filter Drier Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Part Number: 000015430 Rev 02 5/20 257
IT1500/IT1900 Air or Water-Cooled 5 7 6 1 6 9 8 9 2 4 3 Number 1 2 3 4 5 6 7 8 9 258 Component Compressor Condenser - Air or Water Cooled Receiver - Water Cooled Only Liquid Line Filter Drier Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Part Number: 000015430 Rev 02 5/20
REMOTE AIR-COOLED CONDENSER MODELS IT0500/IF0600/IF0900 Remote Air-Cooled Condenser 9 10 13 12 8 7 3 2 1 16 11 15 5 4 6 Number 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 Component Compressor Discharge Check Valve Condenser - Remote Air-Cooled Head Pressure Control Valve Liquid Line Check Valve Receiver Liquid Line Filter Drier Liquid Line Solenoid Valve Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Harvest Pressure Solenoid Valve Harvest Pressure Regulating
IT1200 Remote Air Cooled Condenser 10 9 10 11 x 13 x 8 12 1 13 x 7 4 15 5 x 16 3 2 6 Number 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 260 Component Compressor Discharge Check Valve Condenser - Remote Air-Cooled Head Pressure Control Valve Liquid Line Check Valve Receiver Liquid Line Filter Drier Liquid Line Solenoid Valve Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Harvest Pressure Solenoid Valve Harvest Pressure Regulating Valve Part Number: 000
IT1500/IT1900 Remote Air Cooled Condenser 9 10 10 11 13 1 8 7 16 13 12 Number 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 4 15 5 3 2 5 6 Component Compressor Discharge Check Valve Condenser - Remote Air-Cooled Head Pressure Control Valve Liquid Line Check Valve Receiver Liquid Line Filter Drier Liquid Line Solenoid Valve Heat Exchanger TXV - Thermostatic Expansion Valve Evaporator Strainer Harvest Solenoid Valve Harvest Pressure Solenoid Valve Harvest Pressure Regulating Valve Part Number: 000015430 R
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