Flake & Nugget Machines RFF/UFF/RNF/UNF Models Technician’s Handbook Part Number 000015433 5/18
Safety Notices As you work on Welbilt equipment, be sure to pay close attention to the safety notices in this handbook. Disregarding the notices may lead to serious injury and/or damage to the equipment. Throughout this handbook, you will see the following types of safety notices: nWarning Text in a Warning box alerts you to a potential personal injury situation. Be sure to read the Warning statement before proceeding, and work carefully.
Procedural Notices As you work on Welbilt equipment, be sure to read the procedural notices in this handbook. These notices supply helpful information which may assist you as you work. Throughout this handbook, you will see the following types of procedural notices: Importan Text in an Important box provides you with information that may help you perform a procedure more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.
Read These Before Proceeding: ,Caution Proper installation, care and maintenance are essential for maximum performance and trouble-free operation of your Manitowoc equipment. If you encounter problems not covered by this manual, do not proceed, contact Welbilt. We will be happy to provide assistance. ,Caution Proper installation, care and maintenance are essential for maximum performance and trouble-free operation of your equipment. Visit our website www.welbilt.
nWarning Do not use electrical appliances or accessories other than those supplied by Welbilt for your ice machine model. nWarning Two or more people or a lifting device are required to lift this appliance. nWarning This equipment contains high voltage electricity and refrigerant charge. Installation and repairs are to be performed by properly trained technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure.
nWarning Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision concerning use of the appliance by a person responsible for their safety. Do not allow children to play with this appliance.
nWarning It is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures. nWarning Two or more people are required to move this equipment to prevent tipping.
nWarning When using electric appliances, basic precautions must always be followed, including the following: a. Read all the instructions before using the appliance. b. To reduce the risk of injury, close supervision is necessary when an appliance is used near children. c. Do not contact moving parts. d. Only use attachments recommended or sold by the manufacturer. e. Do not use outdoors. f. For a cord-connected appliance, the following must be included: • Do not unplug by pulling on cord.
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Table of Contents General Information Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Flake Air & Water-Cooled Models . . . . . . . . . . . . 15 Nugget Air & Water-Cooled Models . . . . . . . . . . . 15 QuietQube Models with Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Model/Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation Ice Making Sequence of Operation . . . . . . . . . . . . . . . . 35 UFF0200/UFF0350/UNF0200/UNF0300 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 RFF0320 & RNF0320 Operation . . . . . . . . . . . . . . 35 RNF0620/RFF0620/RNF1100/RFF1300/RFF2500 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 RNF1020C/RFF1220C/RFF2200C . . . . . . . . . . . . . 37 Thermostat Settings . . . . . . . .
Component Specifications Bin Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Low Temperature Thermostat Evaporator safety thermostat) . . . . . . . . . . . . . . . 83 High Pressure Cutout (HPCO) Control . . . . . . . . . 83 Rotation Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Low Pressure Cutout (LPCO) Control . . . . . . . . . . 84 Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Total System Refrigerant Charge . . . . . . . . . . . . . .
Diagrams Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Flake Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 UFF0200/UFF350 Air-Cooled . . . . . . . . . . . . . . . 108 RFF0320 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . 110 RFF0620 Air-Cooled . . . . . . . . . . . . . . . . . . . . . . . 112 RFF1300A Air-Cooled . . . . . . . . . . . . . . . . . . . . . .
General Information Model Numbers FLAKE AIR & WATER-COOLED MODELS Flake Models Self Storage Air-Cooled Self Storage Water-Cooled Modular AirCooled Modular Water-Cooled UFF0200A – – – UFF0350A – – – – – RFF0620A RFF0620W – – RFF1300A RFF1300W – – RFF2500A – RFF0320A NUGGET AIR & WATER-COOLED MODELS Self Storage Air-Cooled Self Storage Water-Cooled Modular AirCooled Modular Water-Cooled UNF0200A – – – UNF0300A – – – UNF0300A – – – – – RNF0620A RNF0620W – – RNF110
QUIETQUBE MODELS WITH REMOTE CONDENSING UNIT Flake Models QuietQube Head RCUF Remote Condensing Unit RFF1220C RCUF1200 RFF2200C RCUF2200 Nugget Models QuietQube Head RCUF Remote Condensing Unit RNF1020C RCUF1000 Model/Serial Number These numbers are required when requesting information from your local Manitowoc Distributor, or Manitowoc Ice. The model and serial number are listed on the MODEL/ SERIAL NUMBER DECAL affixed to the ice machine.
Ice Machine Heat of Rejection Ice Machine Heat of Rejection Series Ice Machine Heat of Rejection Air Conditioning* Peak RFF and UFF Flake Models UFF0200 2400 5000 RFF0320 2400 5000 RFF0620 5200 7700 RFF1300 7500 14000 RFF2500 17000 29500 RNF and UNF Nugget Models UNF0200 2400 5000 UNF0300 5200 5000 RNF0320 3075 4100 RNF0620 5200 7700 RNF1100 7500 10900 RNF1100 11300 12800 *BTU/Hour NOTE: Because the heat of rejection varies during the ice making cycle, the figure shown is
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Installation Installation Requirements The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • Air temperature - Minimum 50°F (10°C), Maximum 110°F (43°C) • The location must be free of airborne and other contaminants. • The location must not be near heat-generating equipment or in direct sunlight. • The location must be capable of supporting the weight of the ice machine and a full bin of ice.
Potable Water Requirements • Plumbing must conform to local codes. • Water temperature: Minimum 37°F (3°C), Maximum 90°F (32°C). • Do not connect the ice machine to a hot water supply. Be sure all hot water restrictors installed for other equipment are working. (Check valves on sink faucets, dishwashers, etc.) • If water pressure exceeds maximum pressure (80 psig [552 kPa] obtain a water pressure regulator. • A water shut-off valve is required to clean the ice machine.
Ice Machine Clearance Requirements Head Sections SelfContained Air-Cooled SelfContained WaterCooled* QuietQube Air-Cooled Back 5” (12.7 cm) 5” (12.7 cm) 5” (12.7 cm) Sides/Top 8” (20.3 cm) 8” (20.3 cm) 8” (20.3 cm) RCUF Units Remote Condensing Unit* Front/Back 24” (61.0 cm) Sides/Top 6” (15.2 cm)* NOTE: Allowance must be made for removal when the ice machine is built-in. Removal of the top panel is required for cleaning and sanitizing.
Electrical Service nWarning All wiring must conform to local, state and national codes. VOLTAGE The maximum allowable voltage variation is ± 10% of the rated voltage on the ice machine model/serial number plate at compressor start-up. FUSE/CIRCUIT BREAKER A separate fuse/circuit breaker must be provided for each ice machine. Circuit breakers must be H.A.C.R. rated (does not apply in Canada). nWarning The ice machine must be grounded in accordance with national and local electrical codes.
Maximum Breaker/Minimum Circuit Amperage Chart NOTE: Due to continuous improvements, this information is for reference only. Please refer to the ice machine serial number tag to verify electrical data. Model/Serial tag information overrides information listed on these pages.
RFF/RNF QUIETQUBE MODELS Series Ice Machine RNF1100 RFF1300 24 Remote Air-Cooled Max Min Fuse/ Circuit Circuit Breaker Amps 115/1/60 15 Amp 2.9 208-230/1/60 15 Amp 1.
Maintenance Cleaning and Sanitizing Maintenance procedures covered in this manual are not covered by the warranty. ,Caution Use only Manitowoc approved Ice Machine Cleaner (part number 000000084) and Sanitizer (part number 9405653). Do not mix Cleaner and Sanitizer solutions together. 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.
Procedure to Clean/Sanitize Use Ice Machine Cleaner part number 000000084. Use Ice Machine Sanitizer part number 9405653. Step 1 Remove front and top covers and set the toggle switch to the OFF position. Step 2 Remove all ice from the bin. Step 3 Turn off the ice making water supply and drain water from evaporator and reservoir. Step 4 Remove the top cover from water reservoir. Step 5 Follow the chart and premix cleaner and water.
Step 7 Move the toggle switch to the ON position. The ice machine will make ice with the cleaning solution and deposit the ice in the bin. Add the remaining cleaner/ water solution as the water level in the reservoir drops. NOTE: Do not allow the cleaner/water level to drop below the minimum water level. The ice machine will discontinue the cleaning cycle if the water float switch opens. Step 8 After all of the cleaner/water solution has been added turn on the ice making water supply.
Step 11 Reassemble ice machine. Step 12 Turn off the ice making water supply. Step 13 Refer to chart and premix water and sanitizer. Amount of Water Amount of Sanitizer 1 Gallons (4 L) Water 1/2 ounce (15 ml) Step 14 Fill the evaporator and reservoir with sanitizer/ water solution. Step 15 Move the toggle switch to the ON position. The ice machine will make ice with the sanitizer/water solution and deposit the ice in the bin.
Heavily Scaled Cleaning Procedure Perform this procedure if you have some or all of these symptoms. • Excessive grinding, popping or squealing noises from the evaporator • Grinding noise from gearbox • Ice machine trips speed sensor NOTE: A Cleaning/Sanitizing Procedure must be performed after this procedure. Procedure to Clean Heavily Scaled Flake Ice Machines Step 1 Remove front and top covers and set the toggle switch to the OFF position. Step 2 Remove all ice from the bin.
Step 6 Remove all water from the evaporator and water reservoir. Add the entire cleaner/water solution and re-install the reservoir cover. Leave the cleaner/water solution in the evaporator for a minimum of 4 hours. Step 7 Remove all cleaner/water from the evaporator and water reservoir. Step 8 Follow the standard cleaning and sanitizing procedures.
PARTS REMOVAL FOR CLEANING/SANITIZING nWarning Disconnect electric power to the ice machine at the electric switch box and wear rubber gloves and safety goggles (or face shield) while handling cleaner or sanitizer. NOTE: Do not mix Cleaner and Sanitizer solutions together. It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. 1. Turn off the water supply to the ice machine at the water service valve. 2.
ICE CHUTE REMOVAL - RFF & RNF MODELS RFF0320/RNF0620/RFF0620/RNF1100/RFF1300/RFF2500 1. Place the toggle switch in the OFF position, turn off the water supply and disconnect electrical power to the ice machine. 2. Disconnect water supply. 3. Remove water reservoir cover. 4. Remove microswitch and bin thermostat from the ice chute. 5. Remove retainer, ice chute elbow and ice chute.
CLEANING THE AIR FILTER AND CONDENSER nWarning Disconnect electric power to the ice machine at the electric service switch before cleaning the condenser. The condenser fins are sharp. Use care when cleaning them. Air-Cooled Condenser Clean the condenser at least every six months. Follow the steps below. 1. Some models have a washable filter. Clean the filter with a mild soap and water solution. 2. Shine a flashlight through the condenser to check for dirt between the fins.
Removal from Service/Winterization ,Caution 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 procedure below. 1. Disconnect the electric power at the circuit breaker or the electric service switch. 2. Turn off the water supply. 3. Disconnect and drain the incoming ice-making water line at the rear of the ice machine. 4.
Sequence of Operation Ice Making Sequence of Operation NOTE: Flake ice machines use an auger to remove ice from the evaporator. Occasional noises (creaks, groans, squeaks, or pops) are a normal part of the ice making process. UFF0200/UFF0350/UNF0200/UNF0300 OPERATION The ice machine will not start until: A. The rocker switch is moved to “ON”. B. Ice does not contact the bin thermostat bulb. C. The water reservoir is full of water.
RNF0620/RFF0620/RNF1100/RFF1300/RFF2500 OPERATION When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
RNF1020C/RFF1220C/RFF2200C Remote Air-cooled Condensing Unit Models When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Ice Production/Quality Check QUALITY CHECK Ice quality varies with ambient and water temperatures, and is measured by the amount of water in the ice. Generally speaking, higher incoming water temperature results in lower ice quality. Lower water temperature results in higher ice quality. ICE PRODUCTION CHECK NOTE: Ice production checks that are within 10% of the charted capacity are considered normal due to variances in air and water temperatures. Actual temperatures will seldom match the chart exactly. 1.
Thermostat Settings Bin Thermostat: The bin thermostat sensing bulb is located in the ice chute on modular models and in the bin thermostat holder on the right side of the bin on self storage models. The bin thermostat turns the ice machine on and off as the level of ice in the bin changes. Use the indicator on the ice machine label as the initial setting and adjust as required.
Thermostat Setting Chart NOTE: Settings are for reference only. Factory setting is indicated on control label and overrides information listed on this page.
Troubleshooting Diagnostic troubleshooting for the ice machine involves following flowcharts that are dependent on symptoms of the failed machine. Follow the flowcharts for the failure symptom and model you are working on. NOTE: Refer to the sequence of operation to determine where in the sequence the ice machine has failed. An example would be an ice machine that energizes the gear motor, but the compressor does not energize. Following the electrical flowchart will quickly and easily eliminate non issues.
Part Number 000015433 5/18 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart - UFF0200/UFF0350/UNF0200/UNF0300 AIR & WATER
Part Number 000015433 5/18 43 YES Evaporator Safety Thermostat Closed? RF0266 LPCO YES Bin Thermostat Closed? YES NO NO Allow Evaporator To Warm And Retest Yes Evaporator Cold? No Verify New Setting Cycles Machine On/Off Yes Adjusting Closes Thermostat? Verify New Setting Cycles Machine On/Off Remove Ice - Allow To Warm And Retest Adjusting Closes Thermostat? Yes No Yes Ice Contacting Thermostat? No No Replace Thermostat Replace Thermostat
Part Number 000015433 5/18 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO Yes Repair Wiring Replace Switch or Float Assembly Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Replace Switch or Float Assembly Power To Water Inlet Valve? No No
Part Number 000015433 5/18 45 YES Line Voltage To Compressor Relay Coil? YES Gear Motor Runs? NO NO No Wiring From Gearmotor Intact? No Line Voltage To Gear motor? Yes Repair Wiring Replace Gear Motor No Ice In Evaporator? Remove Auger From Evaporator Repair Wiring Yes Yes Yes No Rebuild Evaporator Thaw Evaporator Replace Gear Motor Gear Motor Runs?
Part Number 000015433 5/18 YES Line Voltage To Compressor? YES Relay Closed? YES NO NO Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Repair Wiring Replace Relay
RFF0320/RNF0320 Troubleshooting SELF-CONTAINED AIR-COOLED When the toggle switch is placed in the “ON” position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. Ice Chute Safety Switch C. Low Water Level Switch D. High Pressure Cut-out Switch E. Low Pressure Cut-Out Switch Placing the toggle switch in the ON position starts the gear motor and a 10 minute compressor time delay.
Part Number 000015433 5/18 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart - RFF0320/RNF0320
Part Number 000015433 5/18 49 Yes Chute Switch Closed? YES NO Yes Ice Contacting Actuator? Yes Evaporator Cold? NO No Remove Ice And Retest No Yes Actuator Functions? Yes Refrigerant Pressure Below Cut-out? Allow Evaporator To Warm And Retest No Yes Adjusting Closes Thermostat? Remove Ice - Allow To Warm And Retest Low Pressure Switch Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermostat Replace LPCO No Replace Switch Adjust Or Replace A
Part Number 000015433 5/18 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO Yes Repair Wiring Replace Switch or Float Assembly Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Replace Switch or Float Assembly Power To Water Inlet Valve? No No
Part Number 000015433 5/18 51 YES Line Voltage To Compressor Time Delay? YES Gear Motor Runs? Yes NO NO No Gear Motor Centrifugal Switch Closed? No Line Voltage To Gear motor? Yes Replace Gear Motor Repair Wiring Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor Repair Wiring Yes
Part Number 000015433 5/18 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes 10 Minute Time Delay Expired? Yes NO NO NO NO YES Repair Wiring Replace Contactor Delay Jumper Install Compressor Time No Replace Time Delay Relay Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Yes Power To Contact
RFF0620/RNF0620/RNF1100/RFF1300 Troubleshooting SELF-CONTAINED AIR-COOLED Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch NOTE: Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433 5/18 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Plug In Ice Machine, Reset Breaker Electrical Flowchart – RNF0620/RFF0620/RNF1100/RFF1300 AIR & WATER
Part Number 000015433 5/18 55 YES High Pressure Control Closed? YES NO Resets & Trips Resets? Yes No Yes Refrigerant Pressure Above Cut-out? Yes Refrigerant Pressure Below Cut-out? Allow Evaporator To Warm And Retest No Yes Adjusting Closes Thermostat? Clean Condenser, Check Fan Motor Check Fan Cycle Control Evaporator Cold? NO No Remove Ice - Allow To Warm And Retest Low Pressure Control Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermostat
Part Number 000015433 5/18 YES Low Water Level Switch Closed? YES Reservoir Full Of Water? Yes Chute Switch Closed? YES NO NO NO Yes Replace Switch or Float Assembly Power To Water Inlet Valve? Replace Switch Adjust Or Replace Actuator Repair Wiring Replace Switch or Float Assembly No Restore Water Supply / Replace Water Inlet Valve Yes No Yes Actuator Functions? Water Level Switch Closed? Remove Ice And Retest Yes No No Ice Contacting Actuator?
Part Number 000015433 5/18 57 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? Yes NO NO Yes Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper Repair Wiring No Line Voltage To Gear motor? Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor
Part Number 000015433 5/18 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes NO NO NO YES Repair Wiring Replace Contactor Install Compressor Time Delay Jumper No Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions Replace Rotation Sensor/Time Delay Relay Yes Power To Contactor Coil?
RNF1020C/RFF1220C Troubleshooting QUIETQUBE REMOTE AIR-COOLED MODELS WITH REMOTE CONDENSING UNIT Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433 5/18 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Test Run Restore Power, Reset Breaker TRIPS NO YES Isolate And Ohm Each Component - Then Each Wire If Required NO Immediately Trips? YES Toggle Switch In Off Position? YES Isolate And Ohm Switch Check Wiring From Panel Electrical Flowchart - RNF1020C/RFF1220C QuietQube
Part Number 000015433 5/18 61 YES Reservoir Full Of Water? Yes Chute Switch Closed? YES Bin Thermostat Closed? YES NO NO NO Power To Water Inlet Valve? YES YES Ice Contacting Actuator? YES Ice Contacting Thermostat? NO NO Replace Thermostat NO Repair Wiring Replace Switch or Float Assembly Replace Switch Adjust Or Replace Actuator Verify New Setting Cycles Machine On/Off NO Restore Water Supply / Replace Water Inlet Valve YES YES Actuator Functions? YES Adjusting Closes Ther
Part Number 000015433 5/18 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? YES Low Water Level Switch Closed? YES NO NO NO Disconnect Evaporator From Gear Motor Repair Wiring YES Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper NO Line Voltage To Gear motor? Replace Switch or Float Assembly NO Ice In Evaporator? YES Thaw Evaporator Replace Gear Motor NO Rebuild Or Replace Evaporator YES Gear Motor Runs?
Part Number 000015433 5/18 63 YES Delay Relay Contacts Closed? YES Line Voltage To Left Delay Relay Coil? YES NO NO Replace Relay Install Compressor Time Delay Jumper On Left Evaporator Replace Relay NO Delay Relay Contacts Closed? Yes Power To Left Time Delay Relay Coil? YES NO Replace Rotation Sensor/Time Delay Repair Wiring
Part Number 000015433 5/18 YES Line Voltage To Compressor Contactor Coil? YES NO Repair Wiring YES Low Pressure Control Closed? YES High Pressure Control Closed? NO NO Line Voltage At Liquid Line Solenoid Valve? NO YES NO Clean Condenser, Check Fan Motor Check Fan Cycle Control Resets & Trips Resets? Replace Relay Clean Condenser, Check Fan Motor, Check Fan Cycle Control & Refrigeration System Replace HPCO NO Verify: Refrigerant Pressure is Higher Than LPCO Cut-in Both Shut-off Va
Part Number 000015433 5/18 65 Line Voltage To Compressor? YES Contactor Closed? YES NO NO YES Repair Wiring Replace Contactor Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions
RFF2500 Troubleshooting SELF-CONTAINED AIR-COOLED Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433 5/18 67 YES Switch Illuminated? YES Toggle Switch In ON Position? Yes Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position No Trips Restore Power, Reset Breaker Yes Ohm Compressor Crankcase Heater And Toggle Switch Yes Toggle Switch In Off Position? Isolate And Ohm Each Component - Then Each Wire If Required No Immediately Trips? Electrical Flowchart – RF2500 Air-cooled
Part Number 000015433 5/18 Yes Left Side Chute Switch Closed? YES NO No Remove Ice And Retest Yes Yes Actuator Functions? Yes Refrigerant Pressure Above Cut-out? Clean Condenser, Check Fan Motor Check Fan Cycle Control No Yes Adjusting Closes Thermostat? Remove Ice - Allow To Warm And Retest No Ice Contacting Actuator? Resets & Trips Resets? NO High Pressure Control Closed? Ice Contacting Thermostat? Yes NO YES Bin Thermostat Closed? Yes Replace Thermostat Replace HPCO No R
Part Number 000015433 5/18 69 YES Reservoir Full Of Water? NO NO Low Pressure Control Closed? Yes NO Right Side Chute Switch Closed? YES No Power To Water Inlet Valve? Yes Yes No Replace LPCO Replace Switch Adjust Or Replace Actuator Repair Wiring Replace Switch or Float Assembly Repair Refrigerant Leak, Evacuate, Recharge No No Restore Water Supply / Replace Water Inlet Valve Yes Water Level Switch Closed? Yes Refrigerant Pressure Below Cut-out? Yes Actuator Functions? Allow
Part Number 000015433 5/18 YES 10 Minute Time Delay Expired? YES Gear Motor Runs? YES Low Water Level Switch Closed? Yes NO NO NO Repair Wiring Yes Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper No Line Voltage To Gear motor? Replace Switch or Float Assembly Yes No Thaw Evaporator Rebuild Or Replace Evaporator Yes No Replace Gear Motor Gear Motor Runs? Ice In Evaporator? Disconnect Evaporator From Gear Motor
Part Number 000015433 5/18 71 No YES NO Replace Relay Right Delay Relay Contacts Closed? No Power To Right Time Delay Relay Coil? Right Delay Relay Contacts Closed? Install Compressor Time Delay Jumper On Right Evaporator Yes NO YES Line Voltage To Right Delay Relay Coil? YES Replace Relay Left Delay Relay Contacts Closed? NO Power To Left Time Delay Relay Coil? Left Delay Relay Contacts Closed? Install Compressor Time Delay Jumper On Left Evaporator Yes NO YES Line Voltage To Left De
Part Number 000015433 5/18 Line Voltage To Compressor? YES Contactor Closed? YES Line Voltage To Compressor Contactor Coil? Yes NO NO NO YES Repair Wiring Replace Contactor Repair Wiring Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions Water cooled only: Water Regulating Valve Functions
RFF2200C Troubleshooting QUIETQUBE REMOTE AIR-COOLED MODELS WITH REMOTE CONDENSING UNIT Normal Operation When the toggle switch is placed in the ON position the following controls must be in the closed position before the ice machine will start: A. Bin Thermostat B. High Pressure Cut-out Switch C. Ice Chute Safety Switch D. Low Pressure Switch E. Low Water Level Switch Placing the toggle switch in the ON position starts the gear motor.
Part Number 000015433 5/18 YES Switch Illuminated? YES Toggle Switch In ON Position? YES Power Supplied to Ice Machine? NO NO NO Replace Switch Move Switch To ON Position Test Run Restore Power, Reset Breaker TRIPS NO YES Isolate And Ohm Each Component - Then Each Wire If Required NO Immediately Trips? Electrical Flowchart - RFF2200C QuietQube Isolate And Ohm Switch Check Wiring From Panel YES Toggle Switch In Off Position? YES
Part Number 000015433 5/18 75 YES Right Side Chute Switch Closed? NO YES Ice Contacting Actuator? Remove Ice And Retest NO Remove Ice And Retest YES YES NO NO Ice Contacting Actuator? Remove Ice - Allow To Warm And Retest NO Left Side Chute Switch Closed? Ice Contacting Thermostat? YES NO YES Bin Thermostat Closed? YES YES Actuator Functions? YES Actuator Functions? YES Adjusting Closes Thermostat? Replace Thermostat NO Adjust Or Replace Actuator Replace Switch NO Replace S
Part Number 000015433 5/18 YES Do Both Gear Motors Run? YES Low Water Level Switch Closed? YES Reservoir Full Of Water? YES NO NO NO YES NO Line Voltage To Gear motors? Repair Wiring YES Replace Switch or Float Assembly Power To Water Inlet Valve? NO Disconnect Evaporator From Gear Motor Restore Water Supply / Replace Water Inlet Valve YES Water Level Switch Closed? NO Ice In Evaporator? YES Gear Motor Runs? Repair Wiring Thaw Evaporator YES Replace Gear Motor NO Replace
Part Number 000015433 5/18 77 YES Right Delay Relay Contacts Closed? YES Line Voltage To Right Delay Relay Coil? YES NO NO Replace Relay Install Compressor Time Delay Jumper On Right Evaporator Replace Relay NO Right Delay Relay Contacts Closed? YES Power To Right Time Delay Relay Coil? YES Repair Wiring Replace Right Rotation Sensor/Time Delay NO
Part Number 000015433 5/18 YES Left Delay Relay Contacts Closed? YES Line Voltage To Left Delay Relay Coil? YES 10 Minute Time Delay Expired? Yes NO NO NO Replace Relay Install Compressor Time Delay Jumper On Left Evaporator No Wait 10 Minutes - Do Not Install Compressor Time Delay Jumper Left Delay Relay Contacts Closed? Yes Power To Left Time Delay Relay Coil? Yes No Replace Left Rotation Sensor/Time Delay Repair Wiring
Part Number 000015433 5/18 79 YES Line Voltage To Compressor Contactor Coil? YES YES Repair Wiring YES Low Pressure Control Closed? NO High Pressure Control Closed? NO NO NO YES Line Voltage At Liquid Line Solenoid Valve? Clean Condenser, Check Fan Motor Check Fan Cycle Control Resets & Trips Resets? NO Replace Relay Clean Condenser, Check Fan Motor, Check Fan Cycle Control & Refrigeration System Replace HPCO NO Verify: Refrigerant Pressure is Higher Than LPCO Cutin Both Shut-off Val
Part Number 000015433 5/18 Line Voltage To Compressor? YES Contactor Closed? YES NO NO YES Repair Wiring Replace Contactor Verify: Compressor Overload is Closed Start Components Function Fan Cycling Control Functions Condenser Fan Motor Functions
Part Number 000015433 5/18 81 Low Low Normal High High Increases with run time Discharge Pressure Suction Pressure Evaporator Inlet Temperature Evaporator Outlet Temperature Compressor Discharge Line Temperature Normal Range = > 165° @ 70° - 210° @ 110° > 74°C @ 21°C - 99°C @ 43°C) Low on Refrigerant Normal Normal Low High High Overcharge of Refrigerant High Increases with run time High High High High Non Condensible in System High Increases with run time Low Low Low Low Restri
Part Number 000015433 5/18 Low Normal High High Suction Pressure Evaporator Inlet Temperature Evaporator Outlet Temperature Discharge Line Temperature Low Discharge Pressure Low on Refrigerant Normal Normal Normal or Low High High Overcharge of Refrigerant High Increases With Run Time High High High High Non Condensible In System High Increases With Run Time High > 12° Differential between Inlet and Outlet Normal Low Low Liquid Line Restriction, Suction Line Restriction, Or
Component Specifications BIN THERMOSTAT Model Setting Cut-Out Cut-In UFF0200 / UNF0200 UNF0300 / UFF0350 RFF1220 / RFF1300 5 37°F ±1 3°C ±.1 43°F ±1 6°C ±.1 RFF0320 / RFF0620 RNF0620 / RNF0320 RNF1100 / RNF1020 4 36°F ±1 2.2°C ±.1 42°F ±1 5.6°C ±.1 LOW TEMPERATURE THERMOSTAT Evaporator safety thermostat) Model Setting Cut-Out Cut-In UFF0200 / UNF0200 UNF0300 5 -9°F ±1 -23°C ±.1 10°F ±1 -12°C ±.1 RFF0320 / RNF0320 UFF0350 7 -11°F ±.1 -24°C ±.1 7 °F±.1 -14°C ±.
ROTATION SENSOR RFF0620 / RNF0620 / RNF1000 / RNF1020 / RFF1300 RFF2500 Light Definition Yellow Blinking Time Delay Period Yellow Solid Normal Operation Sensing Red Blinking 2 Flashes Per Second Time Delay Period - First 1 To 7 Faults Red Solid Lockout - 8 Consecutive Faults Due To A Speed Fault Remove/Restore Power To Reset Red Blinking Slowly Lockout - 8 Consecutive Faults Due To A Short Circuit LOW PRESSURE CUTOUT (LPCO) CONTROL Model Cut-Out Cut-In UFF0200 / RNF0320 RNF0620 / RFF0620 RNF1
TOTAL SYSTEM REFRIGERANT CHARGE This information is for reference only. Model/Serial plate information overrides information listed in this table. Model Refrigerant Charge Flake Models UFF0200A 7.5 oz / 210 g UFF0350A 11.25 oz / 320 g RFF0320A 11.25 oz / 320 g RFF0620A 19.5 oz / 550 g RFF0620W 15.5 oz / 439 g RFF1300A 24.75 oz / 700 g RFF1220C 156 oz / 4.42 kg RFF2200C 240 oz / 6.08 kg RFF2500A 63.5 oz / 1800 g Nugget Models UNF0200A 7.5 oz / 210 g UNF0300A 11.
FILTER-DRIERS The size of the filter-drier is important. The refrigerant charge is critical. Using an improperly sized filter-drier will cause the ice machine to be improperly charged with refrigerant. Importan Driers are covered as a warranty part. The drier must be replaced any time the system is opened for repairs. SUCTION CLEANUP FILTER-DRIER Contaminated systems must have a suction line filter-drier installed to remove contaminations.
Charts Total System Refrigerant Charge Importan 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 this page. Ice Production & Refrigerant Pressure These charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • Zero out manifold gauge set before obtaining pressure readings to avoid mis-diagnosis.
Flake Models UFF200A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0320A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
UFF0350 SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0620A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF0620W SELF CONTAINED WATER-COOLED Characteristics vary depending on operating conditions.
RFF1220C WITH RCUF1200 QUIETQUBE REMOTE AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 1413 lbs 641 kgs 70°F/50°F 21°C/10°C 1092 lbs 495 kgs 90°F/70°F 32°C/21°C 958 lbs 435 kgs 120°F/70°F 49°C/21°C 603 lbs 274 kgs OPERATING PRESSURES PSIG/kPa Air Temperature Entering Condenser °F/°C Freeze Cycle Discharge Pressure Suction Pressure 50°F PSIG 10°C kPa 185-200 1276-1379 23-28 159-193
RFF1300A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF1300W SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RFF2200C WITH RCUF2200 QUIETQUBE REMOTE AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 2403 lbs 1090 kgs 70°F/50°F 21°C/10°C 2063 lbs 936 kgs 90°F/70°F 32°C/21°C 1702 lbs 772 kgs 120°F/70°F 49°C/21°C 1073 lbs 487 kgs OPERATING PRESSURES PSIG/kPa Air Temperature Around Ice Machine °F/°C Discharge Pressure Suction Pressure 50°F PSIG 16°C kPa 175-200 1207-1379 26-31 176-214 70°F PSIG
RFF2500A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RNS Nugget Models UNF0200A SELF STORAGE AIR-COOLED Characteristics vary depending on operating conditions.
UNF0300A SELF STORAGE AIR-COOLED Characteristics vary depending on operating conditions.
RNF0320A SELF CONTAINED AIR-COOLED Characteristics vary depending on operating conditions.
RNF0620A WATER-COOLED Characteristics will vary depending on operating conditions.
RNF0320W WATER-COOLED Characteristics will vary depending on operating conditions.
RNF1100A AIR-COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production 70°F/50°F 21°C/10°C 1078 lbs 489 kgs 90°F/70°F 32°C/21°C 825 lbs 374 kgs OPERATING PRESSURES PSIG/kPa Air Temperature Around Ice Machine °F/°C Discharge Pressure Freeze Cycle Suction Pressure 70°F PSIG 21°C kPa 220-240 1517-1655 30-32 207-221 90°F PSIG 32°C kPa 275-310 1896-2137 33-35 228-241 110°F PSIG 43°C kPa 370-390 2551-2689 38-40 262-276 P
RNF1000W WATER-COOLED Characteristics will vary depending on operating conditions.
RNF1020C WITH RCUF1000 QUIETQUBE REMOTE AIR COOLED Characteristics vary depending on operating conditions ICE PRODUCTION Air Temperature Water Temperature 24 Hour Ice Production -20°F/50°F -29°C/10°C 1131 lbs 513 kgs 70°F/50°F 21°C/10°C 1131 lbs 513 kgs 90°F/70°F 32°C/21°C 900 lbs 408 kgs 120°F/70°F 49°C/21°C 490 lbs 222kgs OPERATING PRESSURES PSIG/kPa Air Temperature Around Ice Machine °F/°C Freeze Cycle Discharge Pressure Suction Pressure 60°F PSIG 16°C kPa 240-250 1655-1724 33-35 227-241
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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.
Flake Models UFF0200/UFF350 AIR-COOLED Refer to Nameplate for Voltage Rating 108 Part Number 000015433 5/18
Wiring Diagram Legend UFF0200/UFF0350 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water Inlet valve 7 Evaporator low temperature safety or Low pressure control 10 Low water level safety 11 Bin thermostat 12 High temperature limit (snap disc) 13 Fan cycle control 17 Water level switch 21 Compressor relay 24 On/Off switch 26 Gear motor centrifugal switch Wire Color Designation B White BL Blue G Grey M Brown N Black R Red RS Pink Part Number 000015433 5/
RFF0320 AIR-COOLED Refer to Nameplate for Voltage Rating L BN BN BN BN BN L1 L2 11 RD K P 27 T1 RD T2 GY 15 P 19 RD GY 18 RD RD 10 24 RS BK BN BU BU 35 WH BK M N 110 BK BK 17 6 BU 1 BU P 15 A1 18 A2 25 A1 K A2 13 GY M BU BU PK M 2 BU 4 Part Number 000015433 5/18
Wiring Diagram Legend RFF0320 Air-cooled 1 Gear Motor 2 Compressor 4 Fan motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 13 Fan cycle control 17 Water level switch 18 Chute safety switch 19 High Pressure Safety Switch 24 On/Off switch 25 Compressor delay timer 27 Low Pressure Safety Switch 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PK Pink Part Number 000015433 5/18 111
RFF0620 AIR-COOLED Refer to Nameplate for Voltage Rating 112 Part Number 000015433 5/18
Wiring Diagram Legend RFF0620 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 21 Compressor relay 24 On/Off switch 25 Compressor time delay 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation B White BL Blue G Grey M Brown N Black R Red
RFF1300A AIR-COOLED Refer to Nameplate for Voltage Rating L BN BN BN BK K1 5 6 1 2 RD BK M BU P BU P 19 RD 27 2 15 11 18 BK RD RD BK 38 24 BK 17 10 WH K1 P 13 35 BU BU PH GY N 114 BU RD BU BK BN M M 4 BU 1 BU 30 ~ ~ BU 6 BU Part Number 000015433 5/18
Wiring Diagram Legend RFF1300A Air-cooled 1 Gear Motor 2 Compressor 4 Fan motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay bypass 38 Solenoid Valve Wire Color Designation GY Grey WH White BU Blue BN Brown BK Black RD Red PH Pink Part Number 000
RFF1300 WATER-COOLED Refer to Nameplate for Voltage Rating L BN BN BN 11 K1 5 6 BK 1 2 BU M P BU 19 27 2 15 P RD RD 18 BK RD RD BK 38 BK 10 24 17 WH K1 35 BU BU BU GY RD BU BK BN N 116 BU 1 BU ~ ~ M 30 6 BU Part Number 000015433 5/18
Wiring Diagram Legend RFF1300W Water-cooled 1 Gear Motor 2 Compressor 4 Fan motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay bypass 38 Solenoid Valve Wire Color Designation GY Grey WH White BU Blue BN Brown BK Black RD Red PH Pink Part Number 0
RFF1220C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energize remote condensing unit - 2 Amp max 118 Part Number 000015433 5/18
Wiring Diagram Legend RFF1220C Head Section 1 Gear Motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 17 Water level switch 18 Ice chute safety switch 21 Compressor Relay 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid Valve Wire Color Designation B White BL Blue G Grey M Brown N Black R Red V Violet A Orange Part Number 000015433 5/18 119
RFF2500 AIR-COOLED Refer to Nameplate for Voltage Rating Connections • A & B connect to a remote panel when used - Jumper must be removed when remote panel is used • C & D energize a remote alarm indication when used 120 Part Number 000015433 5/18
Wiring Diagram Legend RFF2500 Air-Cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 25 Compressor time delay 27 Low pressure cut out 29 Compressor time delay relay 30 Rotation sensor 35 Compressor time delay by-pass 37 Remote indicator panel terminals Rc Compressor crankcase heate
RFF2200C QUIETQUBE HEAD SECTION Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage • 3 & 4 energize remote condensing unit - 2 Amp max 122 Part Number 000015433 5/18
Wiring Diagram Legend RFF2200C Head Section 1 Gear Motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 17 Water level switch 18 Ice chute safety switch 21 Compressor Relay 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass 38 Solenoid Valve Wire Color Designation B White BL Blue G Grey M Brown N Black R Red A Orange Part Number 000015433 5/18 123
Condensing Units RCUF CONDENSING UNIT 1PH Refer to Nameplate for Voltage Rating 6 1 9 10 2 7 8 12 4 3 11 13 5 6 124 Part Number 000015433 5/18
Wiring Diagram Legend RCUF Condensing Unit 1 High Pressure Cutout Control 2 Thermostat - Receiver Heater 3 Receiver Heater 4 Low Pressure Cutout Control 5 Contactor Coil 6 Contactor Contacts 7 Condenser Fan Motor 8 Condenser Fan Motor Run Capacitor 9 Compressor 10 Compressor Overload 11 Compressor Run Capacitor 12 Compressor Relay 13 Compressor Start Capacitor Wire Color Designation BLK Black YEL Yellow RED Red Compressor Windings C Common Winding S Start Winding R Run W
RCUF CONDENSING UNIT 3PH Refer to Nameplate for Voltage Rating 9 6 1 2 4 3 7 8 5 6 126 Part Number 000015433 5/18
Wiring Diagram Legend RCUF Condensing Unit 1 High Pressure Cutout Control 2 Thermostat - Receiver Heater 3 Receiver Heater 4 Low Pressure Cutout Control 5 Contactor Coil 6 Contactor Contacts 7 Condenser Fan Motor 8 Condenser Fan Motor Run Capacitor 9 Compressor Part Number 000015433 5/18 127
Nugget Models UNF0200/UNF0300 AIR-COOLED Refer to Nameplate for Voltage Rating 128 Part Number 000015433 5/18
Wiring Diagram Legend UNF0200/UNF0300 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water Inlet valve 7 Evaporator low temperature safety or Low pressure control 10 Low water level safety 11 Bin thermostat 12 High temperature limit (snap disc) 13 Fan cycle control 17 Water level switch 21 Compressor relay 24 On/Off switch 26 Gear motor centrifugal switch Wire Color Designation B White BL Blue G Grey M Brown N Black R Red RS Pink Part Number 000015433 5/
RNF0320 AIR-COOLED Refer to Nameplate for Voltage Rating 130 Part Number 000015433 5/18
Wiring Diagram Legend RNF0320 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 7 Low pressure control 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 17 Water level switch 18 Ice chute safety switch 21 Compressor relay 24 On/Off switch 25 Compressor time delay 26 Gear motor centrifugal switch 35 Compressor time delay by-pass Wire Color Designation B White BL Blue G Grey M Brown N Black R Red RS Pink Part Number 000015
RNF0620 AIR-COOLED Refer to Nameplate for Voltage Rating L BN BN BN BK K1 5 1 11 RD BK 6 2 M BU P 18 BK RD BK BK 10 24 19 RD 27 2 15 P 17 WH K1 P 13 35 BU BU PH GY M M N 132 BU 4 BU 1 BU BU BK BN RD 30 BU ~ ~ ~ BU 6 Part Number 000015433 5/18
Wiring Diagram Legend RNF0620 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red PH Pink Part Number 000015433 5/18 133
RNF0620 WATER-COOLED Refer to Nameplate for Voltage Rating L BN BN BN 5 1 K1 11 RD BK 6 2 BU M P 18 BK RD BK BK 10 24 19 RD 27 2 15 P 17 WH K1 35 BU BU GY M N 134 BU 1 BU BU BK BN RD 30 BU ~ ~ ~ BU 6 Part Number 000015433 5/18
Wiring Diagram Legend RNF0620 Water-cooled 1 Gear Motor 2 Compressor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 24 On/Off switch 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation WH White BU Blue GY Grey BN Brown BK Black RD Red Part Number 000015433 5/18 135
RNF1100 AIR-COOLED Refer to Nameplate for Voltage Rating 136 Part Number 000015433 5/18
Wiring Diagram Legend RNF1100 Air-cooled 1 Gear Motor 2 Compressor 4 Condenser fan motor 6 Water inlet valve 10 Low water level safety 11 Bin thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Ice chute safety switch 19 High pressure cut out 21 Compressor relay 24 On/Off switch 25 Compressor time delay 27 Low pressure cut out 30 Rotation sensor 35 Compressor time delay by-pass Wire Color Designation B White BL Blue G Grey M Brown N Black R Red
BL BL RS G BL BL R N M M M 4 N RNF1100 WATER-COOLED 1 BL 6 ~ ~ BL 30 BL BL Refer to Nameplate for Voltage Rating M L M M 11 K1 5 6 1 2 N M BL P BL 19 27 2 15 P R R 18 N R R N N 38 10 24 17 B K1 35 BL BL BL G BL R NM N 138 BL 1 BL ~ ~ M 30 6 BL Part Number 000015433 5/18
Wiring Diagram Legend RNF1100 Water-Cooled 1 Gear Motor 2 Compressor 4 Fan Motor 6 Water inlet Valve 10 Low Water Level Switch 11 Bin Thermostat 13 Fan cycle control 15 Contactor 17 Water level switch 18 Chute safety switch 19 High pressure safety switch 24 On/Off switch 27 Low pressure safety switch 30 Rotation sensor 35 Compressor time delay by-pass (Service staff only) 38 Solenoid Valve Wire Color Designation B White BL Blue G Grey M Brown N Black R Red RS Pin
RNF1020C Refer to Nameplate for Voltage Rating Connections • A, B, & C connect to a remote panel when used Jumper must be removed when remote panel is used • 1 & 2 connect to line voltage 3 & 4 energizes remote refrigeration - 2 Amp max A A B M C BL M 2 BL 3 G 4 N A A 24 10 B B B B BL M 10 7 9 11 4 6 A G N BL R N 35 N A 30 ~ ~ BL 140 18 11 N 1 A A V BL 21 38 17 R M 6 1 BL BL Part Number 000015433 5/18
Wiring Diagram Legend RNF1020C Head Section 1 Gear Motor 6 Water inlet valve 10 Low water level switch 11 Bin thermostat 17 Water level switch 18 Chute safety switch 21 Relay 24 On/Off switch 30 Rotation sensor 35 Compressor time delay by-pass (Service Staff only) 38 Solenoid Valve Wire Color Designation A Orange B White BL Blue G Grey M Brown N Black R Red V Violet Part Number 000015433 5/18 141
Refrigeration Tubing Schematics Flake Models RFF0200/RFF0350/RFF0320/RFF0620 6 7 5 2 4 1 3 Tubing Diagram Legend 142 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Capillary tube 5 Accumulator 6 Heat Exchanger 7 Evaporator Part Number 000015433 5/18
RFF1300 AIR-COOLED 1 2 5 3 4 6 7 8 Tubing Diagram Legend 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Liquid Line Solenoid Valve 5 Suction Accumulator 6 Thermostatic Expansion Valve 7 Liquid Accumulator 8 Evaporator Part Number 000015433 5/18 143
RFF2500 AIR-COOLED 1 2 5 3 4 6 7 8 144 8 Part Number 000015433 5/18
Tubing Diagram Legend 1 Compressor 2 Condenser 3 Liquid Line Drier 4 Liquid Line Solenoid Valve 5 Suction Accumulator 6 Thermostatic Expansion Valve 7 Liquid Accumulator 8 Evaporator Part Number 000015433 5/18 145
RFF1220C QUIETQUBE HEAD SECTION & RCUF1000 CONDENSING UNIT 4 5 6 3 13 7 12 1 2 14 8 9 10 11 146 Part Number 000015433 5/18
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 Suction Line Shut-off Valve 13 Suction Line Filter 14 Suction Accumulator Part Number 000015433 5/18 147
RFF2200 QUIETQUBE HEAD SECTION & RCUF2200 CONDENSING UNIT 4 5 6 3 14 7 13 1 2 15 9 10 12 11 148 11 Part Number 000015433 5/18
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 Liquid Accumulator 13 Suction Line Shut-off Valve 14 Suction Line Filter 15 Suction Accumulator Part Number 000015433 5/18 149
Nugget Models UNF0200/UNF0300 Air & Water-cooled 4 5 6 2 1 3 TUBING DIAGRAM LEGEND 150 1 Compressor 2 Condenser (air or water cooled) 3 Liquid Line Drier 4 Heat Exchanger 5 Capillary Tube 6 Evaporator Part Number 000015433 5/18
RNF0320/RNF0620/RNF1100 Air & Water-cooled 5 6 4 2 3 1 TUBING DIAGRAM LEGEND 1 Compressor 2 Condenser (air or water cooled) 3 Liquid Line Drier 4 Heat Exchanger 5 Automatic Expansion Valve 6 Evaporator Part Number 000015433 5/18 151
RNF1020C QUIETQUBE HEAD SECTION & RCUF1000 CONDENSING UNIT 4 5 6 3 14 7 1 13 2 15 12 8 9 10 11 152 Part Number 000015433 5/18
Tubing Diagram Legend 1 Compressor 2 Check Valve 3 Head Pressure Control Valve 4 Condenser (air or water cooled) 5 Receiver 6 Condensing unit Liquid Line Drier 7 Liquid Line Shut-off Valve 8 Ice Machine Liquid Line Drier 9 Liquid Line Solenoid Valve 10 Thermostatic Expansion Valve 11 Evaporator 12 S Trap (20’ + Rise Only) 13 Suction Line Shut-off Valve 14 Suction Line Filter 15 Suction Accumulator Part Number 000015433 5/18 153
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MANITOWOC ICE 2110 SOUTH 26TH STREET MANITOWOC, WI 54220 844-724-2273 WWW.MANITOWOCICE.COM WWW.WELBILT.COM Welbilt provides the world’s top chefs, and premier chain operators or growing independents with industry leading equipment and solutions. Our cuttingedge designs and lean manufacturing tactics are powered by deep knowledge, operator insights, and culinary expertise. All of our products are backed by KitchenCare® – our aftermarket, repair, and parts service.
