Instruction Manual Modular Crescent Cuber Models KM-350MAJ, MWJ KM-420MAJ, MWJ, MRJZ KM-520MAJ, MWJ, MRJZ KM-660MAJ, MWJ, MRJZ hoshizakiamerica.
WARNING Only qualified service technicians should install and service the appliance. To obtain the name and phone number of your local Hoshizaki Certified Service Representative, visit www.hoshizaki.com. No installation or service should be undertaken until the technician has thoroughly read this Instruction Manual. Likewise, the owner/manager should not proceed to operate the appliance until the installer has instructed them on its proper operation.
IMPORTANT This manual should be read carefully before the appliance is installed and operated. Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use and maintenance of the appliance. Retain this manual for any further reference that may be necessary. CONTENTS Important Safety Information.................................................................................................. 4 I. Specifications..........................
Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, damage to the appliance, or damage to property. WARNING Indicates a hazardous situation which could result in death or serious injury. NOTICE Indicates a situation which could result in damage to the appliance or property. IMPORTANT Indicates important information about the installation, use, and care of the appliance.
WARNING, continued • Children should be properly supervised around the appliance. • Do not climb, stand, or hang on the appliance or allow children or animals to do so. Serious injury could occur or the appliance could be damaged. • Do not use combustible spray or place volatile or flammable substances near the appliance. They might catch fire. • Keep the area around the appliance clean. Dirt, dust, or insects in the appliance could cause harm to individuals or damage to the appliance.
I. Specifications A. Electrical and Refrigerant Data The rating label and nameplate provide electrical and refrigerant data. The rating label can be seen by removing the front panel. The nameplate is located on the rear panel. For certification marks, see the nameplate. We reserve the right to make changes in specifications and design without prior notice. 1. KM-350M_J Single Phase Model Number KM-350MAJ AC Supply Voltage 115/60/1 Compressor 115V 7.5RLA 50LRA Pump 120V 0.4FLA 10W Fan 115V 1.
3. KM-520M_J(Z) Model Number AC Supply Voltage Compressor Pump Fan Other Maximum Fuse Size Max. HACR Breaker (USA Only) Max. Circuit Breaker (Canada Only) Minimum Circuit Ampacity Design Pressure Refrigerant KM-520MAJ 115/60/1 115V 8.9RLA 54.5LRA 120V 0.5FLA 10W 120V 1.0FLA 1/15 HP 115V 0.15A 20 AMPS 20 AMPS Single Phase KM-520MWJ 115/60/1 115V 7.8RLA 54.5LRA 120V 0.5FLA 10W --- --- --115V 0.15A 20 AMPS 20 AMPS KM-520MRJZ 115/60/1 115V 8.4RLA 54.5LRA 120V 0.5FLA 10W 120V 3A MAX 115V 0.
B. Dimensions/Connections 1. Air-Cooled Models (MAJ) Units: mm [in.] Rear Side Bottom NOTICE • Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required. • The storage bin opening must match the bottom opening as in the illustration.
2. Water-Cooled Models (MWJ) Units: mm [in.] Rear Side Bottom NOTICE • Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required. • The storage bin opening must match the bottom opening as in the illustration.
3. Remote Models (MRJZ) Units: mm [in.] Side Rear Bottom NOTICE • Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required. • The storage bin opening must match the bottom opening as in the illustration.
4. Remote Condenser Unit URC-5FZ (use with KM-420MRJZ, KM-520MRJZ, or KM-660MRJZ) Units: mm [in.] NOTICE Allow 24" (61 cm) clearance at front and rear for proper air circulation and ease of maintenance and/or service should they be required.
II. Installation and Operating Instructions WARNING • The icemaker must be installed in accordance with applicable national, state, and local codes and regulations. • Failure to install, operate, and maintain the icemaker in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage and may result in costly water damage. • CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after installation.
B. Checks Before Installation • Visually inspect the exterior of the shipping container and immediately report any damage to the carrier. Upon opening the container, any concealed damage should also be immediately reported to the carrier. • Remove the shipping carton, tape, and packing material. If any are left in the icemaker, it will not work properly. • See the nameplate on the rear panel, and check that your voltage supplied corresponds with the voltage specified on the nameplate.
D. Setup 1. Dispenser Unit/Ice Storage Bin and Icemaker Setup WARNING • The installer must ensure the dispenser unit/ice storage bin is compatible with the icemaker, and the dispenser unit/ice storage bin and icemaker are properly attached and secured. • Do not allow top kits to interfere with the bin control lens sensing area or the icemaker will not operate properly. 1) If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup procedure.
E. Electrical Connection WARNING For All Models • Electrical connection must be hard-wired and must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage. • The icemaker requires an independent power supply of proper capacity. See the nameplate for electrical specifications.
F. Water Supply and Drain Connections See Figs. 4 through 6 WARNING Water supply and drain connections must be installed in accordance with applicable national, state, and local regulations. NOTICE • Normal operating water temperature should be within 45°F to 90°F (7°C to 32°C). Operation of the appliance, for extended periods, outside of this normal temperature range may affect appliance performance. • Water supply pressure must be a minimum of 10 PSIG and a maximum of 113 PSIG.
1. Icemaker Icemaker Water Supply Inlet 1/2" Female Pipe Thread (FPT) Minimum Icemaker Water Supply Line Size 1/4" Nominal ID Copper Water Tubing or Equivalent Icemaker Drain Outlet 3/4" Female Pipe Thread (FPT) Minimum Icemaker Drain Line Size 3/4" Nominal ID Hard Pipe or Equivalent Condensation Drain Outlet 3/8" OD Hard Tube • An icemaker water supply line shut-off valve and drain valve must be installed.
2. Water-Cooled Condenser a) Connection to an Open Drain System Condenser Water Supply Inlet 1/2" Female Pipe Thread (FPT) Minimum Condenser Water Supply Line Size 1/4" Nominal ID Copper Water Tubing or Equivalent Condenser Drain Outlet 3/8" Female Pipe Thread (FPT) Minimum Condenser Drain Line Size 1/4" Nominal ID Hard Pipe or Equivalent • A condenser water supply line shut-off valve and drain valve must be installed. • In some areas, a back flow preventer may be required in the cooling water circuit.
b) Connection to a Closed Loop System Condenser Water Supply Inlet 1/2" Female Pipe Thread (FPT) Minimum Condenser Water Supply Line Size 1/4" Nominal ID Copper Water Tubing or Equivalent Condenser Return Outlet 3/8" Female Pipe Thread (FPT) Minimum Condenser Return Line Size 1/4" Nominal ID Copper Water Tubing or Equivalent • Shut-off valves and drain valves must be installed at both the condenser water supply inlet and condenser return outlet. • Minimum water flow to the condenser is 4 GPM.
G. Installation of Remote Condenser Unit for Remote Models WARNING • Installation of remote condenser unit must be performed by properly trained and EPA-certified service personnel. • The remote condenser unit must be installed in accordance with applicable national, state, and local codes and regulations. • Failure to install the remote condenser unit within these guidelines may adversely affect safety, performance, component life, and warranty coverage.
2. Checks Before Installation 1) Remove the shipping carton, tape, and packing material. 2) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the fan blades move freely. 3. Setup 1) Assemble 2 sets of legs using the legs, bolts, and nuts provided. See Fig. 9. 2) Position 1 of the plates provided between a set of legs and the remote condenser unit, then secure the legs to the remote condenser unit with the bolts and nuts provided.
5. Line Set Installation WARNING • R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F (80°C). • R-404A itself is not explosive or poisonous. However, when exposed to high temperatures (open flames), R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous. • Do not use silver alloy or copper alloy containing arsenic. • Use an electronic leak detector or soap bubbles to check for leaks.
NOTICE • Before brazing, remove the Schrader valve cores from the service valve access ports. • When brazing protect the service valve by using a wet cloth to prevent the service valve from overheating. • Braze all fittings while purging with a nitrogen gas flowing at a pressure of 3 to 4 PSIG. 4) Braze the liquid line copper tube to the straight copper tube and the straight copper tube to the icemaker liquid line service valve.
b) Line Set Greater Than 66' (20 m) Up to a Minimum of 100' (30.5 m) 1) Route the factory line set or appropriate size copper tubing. When field fabricating, insulate the copper tubes separately. Leave a service loop behind the icemaker to allow the icemaker to be pulled out for service. See Fig. 7. Note: • The service loop is not considered an oil trap. • The maximum line length for the standard line sizes and refrigerant charge is 66' (20 m).
10) Braze the condenser unit discharge line copper tube to the 1/2"×3/8" copper slip reducer and the 1/2"×3/8" copper slip reducer to the condenser unit discharge line service valve. 11) Allow the service valves to cool, then replace the Schrader valve cores. Attach the gauge manifold hoses. 12) Use an electronic leak detector or soap bubbles to check for leaks.
6. Electrical Connection WARNING • Electrical connection must meet national, state, and local electrical code requirements. Failure to meet these code requirements could result in death, electric shock, serious injury, fire, or damage. • To reduce the risk of electric shock, make all remote condenser unit connections before connecting the icemaker power supply. • THE REMOTE CONDENSER UNIT MUST BE GROUNDED.
3) Install a ground wire from the icemaker fan motor junction box to the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating. 4) Install line and neutral wires from the fan motor leads in the icemaker fan motor junction box to the leads in the remote condenser unit junction box. Use wire of an appropriate gage and outdoor rating. 5) Replace the junction box covers and the louver panel in their correct positions. 7.
H. Final Checklist 1.
2.
I. Startup 1. Bin Control Setting An ultrasonic sensor is used as the bin control to control the level of ice in the dispenser unit/ice storage bin. The bin control setting must be set to match the application to avoid possible icemaker movement, water leakage, or ice overflow. WARNING • Improper adjustment may adversely affect safety, performance, component life, and warranty coverage. • On dispenser unit applications, do not increase ice level above the recommended setting listed below.
For Standard Ice Storage Bins, Hoshizaki DB and DM Dispenser Units, and Coca-Cola Freestyle® Dispenser Units Application Bin Control Ice Level Settings Shutdown Distance From Bin Control Lens Bin Control Setting (Restart is 4 in. (102 mm) below shutdown distance) Standard Ice Storage Bins 1 254 mm (10") (Factory Default) Do not adjust dispensers to this setting.
For Non-Hoshizaki Dispenser Units Bin Control Setting 1 (Factory Default) 2 3 4 5 Bin Control Ice Level Settings Shutdown Distance From Bin Control Lens (Restart is 4 in. (102 mm) below shutdown distance) Do not adjust dispensers to this setting. 254 mm (10") 305 mm (12") 406 mm (16") 508 mm (20") 610 mm (24") WARNING Confirm that the final ice level location does not allow for icemaker movement, water leakage, or ice overflow. NOTICE The ice level must be lower than the top of the dispenser unit.
2. Appliance Startup and Bin Control Check WARNING • All parts are factory-adjusted. Improper adjustments may adversely affect safety, performance, component life, and warranty coverage. • Make sure the icemaker has been installed as outlined in this manual and that the water supply is on. • Improper adjustment may adversely affect safety, performance, component life, and warranty coverage.
6) 1 min. fill cycle begins. Place an object 5" to 7" (127 to 178 mm) away from the bin control lens. See Fig. 19. 15 sec. later, the icemaker shuts down. Remove the object from the bin control lens. 30 sec. later, the icemaker restarts. For bin control shutdown times per cycle, see the table below. Cycle at Bin Control Activation Shutdown 1 min. Fill Cycle 15 sec. after activation. Harvest Cycle If engaged 15 sec. or longer, at the end of harvest cycle. Freeze Cycle 15 sec.
III. Maintenance The appliance must be maintained in accordance with the instruction manual and labels provided. Consult with your local Hoshizaki Certified Service Representative about maintenance service. WARNING • Only qualified service technicians should service the appliance. • To reduce the risk of electric shock, do not touch the control switch or mode switch with damp hands. • Move the control switch to the "OFF" position and turn off the power supply before servicing.
B. Cleaning and Sanitizing Instructions The icemaker must be cleaned and sanitized at least once a year. More frequent cleaning and sanitizing may be required in some water conditions. WARNING • To prevent injury to individuals and damage to the icemaker, do not use ammonia type cleaners. • Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution.
Sanitizing 10) Confirm the mode switch is in the "CLEAN" position, then move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace the front panel. The water tank drains and then fills. 11) When the control board starts beeping (2 beep sequence), remove the front panel. Move the control switch to the "OFF" position. 12) Remove the front insulation panel, then pour 0.6 fl. oz. (18 ml) of an 8.
IV. Preparing the Appliance for Periods of Non-Use NOTICE • When storing the icemaker for an extended time or in sub-freezing temperatures, follow the instructions below to prevent damage. • To prevent damage to the water pump seal, do not leave the control switch in the "PUMP" position for extended periods when the water tank is empty. When the icemaker is not used for two or three days under normal conditions, it is sufficient to move the control switch to the "OFF" position.
3. On water-cooled models, remove the water from the water-cooled condenser: 1) Make sure the power supply is off, then remove the front, top, and right side panels. 2) Close the condenser water supply line shut-off valve. If connected to a closed loop system, also close the condenser return line shut-off valve. 3) Open the condenser water supply line drain valve. If connected to a closed loop system, also open the condenser return line drain valve.
V. Disposal The appliance contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulations. Refrigerant must be recovered by properly certified service personnel.
618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 770.487.2331 (F) 770.487.3360 hoshizakiamerica.
