Hoshizaki KM-650MRH Instruction Manual
Modular crescent cuber
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Summary of Contents for Hoshizaki KM-650MRH
- Page 1 Hoshizaki America, Inc. “A Superior Degree of Reliability” www.hoshizaki.com Modular Crescent Cuber Models KM-650MAH KM-650MWH KM-650MRH INSTRUCTION MANUAL ™ Issued: 8-14-2006 Revised: 3-18-2010...
- Page 2 Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, write, or send an e-mail message to the Hoshizaki Technical Support Department for assistance. HOSHIZAKI AMERICA, INC.
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Page 3: Table Of Contents
Important Safety Information ... 4 I. Specifications ... 5 A. Nameplate Rating ... 5 1. KM-650MAH (air-cooled) ... 5 2. KM-650MWH (water-cooled) ... 6 3. KM-650MRH (remote air-cooled) ... 7 B. Dimensions / Connections ... 8 1. KM-650MAH ... 8 2. KM-650MWH ... 9 3. -
Page 4: Important Safety Information
Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, or damage to the unit. WARNING Indicates a hazardous situation which could result in death or serious injury. CAUTION Indicates a situation which could result in damage to the unit. -
Page 5: Specifications
I. Specifications A. Nameplate Rating 1. KM-650MAH (air-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER SERIAL NUMBER AC SUPPLY VOLTAGE COMPRESSOR PUMP OTHER MAXIMUM FUSE SIZE MAX. HACR BREAKER(USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY DESIGN PRESSURE REFRIGERANT MOTOR-COMPRESSOR THERMALLY PROTECTED,... -
Page 6: Km-650Mwh (Water-Cooled)
2. KM-650MWH (water-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER SERIAL NUMBER AC SUPPLY VOLTAGE COMPRESSOR PUMP OTHER MAXIMUM FUSE SIZE MAX. HACR BREAKER(USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY DESIGN PRESSURE REFRIGERANT MOTOR-COMPRESSOR THERMALLY PROTECTED, ICE MAKER WITHOUT... -
Page 7: Km-650Mrh (Remote Air-Cooled)
3. KM-650MRH (remote air-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER SERIAL NUMBER AC SUPPLY VOLTAGE COMPRESSOR PUMP FAN REMOTE OTHER MAXIMUM FUSE SIZE MAX. HACR BREAKER(USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY DESIGN PRESSURE REFRIGERANT MOTOR-COMPRESSOR THERMALLY PROTECTED,... -
Page 8: Dimensions / Connections
B. Dimensions / Connections 1. KM-650MAH... -
Page 9: Km-650Mwh
2. KM-650MWH... -
Page 10: Km-650Mrh
3. KM-650MRH... -
Page 11: Installation And Operating Instructions
• See the nameplate on the rear panel, and check that your voltage supplied corresponds with the voltage specified on the nameplate. • This icemaker can be installed on a storage bin 22" wide or wider. Hoshizaki Ice Storage Bin, Model B-300 series is recommended. For further options, contact your local Hoshizaki distributor. • On remote air-cooled model, a remote condenser unit is needed. Hoshizaki Remote Condenser Unit, Model URC-6F, is recommended. B. How to Remove Panels See Fig. 1 • Front Panel: Remove the screw. Lift up and... -
Page 12: Location
C. Location 1. This icemaker is not intended for outdoor use. Normal operating ambient temperature should be within 45°F to 100°F (7°C to 38°C); Normal operating water temperature should be within 45°F to 90°F (7°C to 32°C). Operation of the icemaker, for extended periods, outside of these normal temperature ranges may affect icemaker performance. -
Page 13: Electrical Connection
E. Electrical Connection For All Models 1. 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 severe damage to equipment. -
Page 14: Installation Of Remote Condenser Unit
F. Installation of Remote Condenser Unit 1. Installation of remote condenser unit must be performed by properly trained and certified service personnel. 2. Failure to install the equipment within these guidelines may adversely affect safety, performance, component life, and warranty coverage. 1. -
Page 15: Setup
2. The maximum line length for the standard line sizes and refrigerant charge is 66 feet. With larger line sizes and additional refrigerant, the maximum line length is 100 feet. For details, see "II.F.5. Line Set Exceeding 66 Feet." Precharged factory line sets, available as optional equipment from Hoshizaki America, are recommended. For details, see "II.F.4.a) Factory Line Set Installation." Field fabricated line sets are allowed. For details, see "II.F.4.b) Field Fabricated Line Set Installation."... - Page 16 2) Insulate the two copper tubes separately. 3) Install Parker quick connect couplings on each end. OS-QUICK , a universal quick connect coupling kit available as optional equipment from Hoshizaki America, is recommended. CAUTION! Before brazing, remove the Schrader valve core from the access port.
- Page 17 6) Evacuate through the Schrader access ports on the Parker quick connect couplings and charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG. 7) Connect the refrigerant lines to the appropriate male fittings on the remote condenser unit first and then at the icemaker.
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Page 18: Line Set Exceeding 66 Feet
After weighing in the additional charge, write the new correct total refrigerant charge on the unit's rating label. Hoshizaki Technical Support is available at 1-800-233-1940 for recommendations. 6. Electrical Connection 1. Electrical connection must meet national, state, and local electrical code requirements. -
Page 19: Stacking Remote Condenser Units
2) Remove the junction box cover on the remote condenser unit. Remove the fan motor junction box cover on the icemaker. 3) Install a ground wire from the icemaker to the remote condenser unit. Use wire of an appropriate gage and outdoor rating. 4) Connect the fan motor leads in the junction box of the remote condenser unit to the fan motor leads in the fan motor junction box of the icemaker. -
Page 20: Water Supply And Drain Connections
10 PSIG. Do not run the icemaker until the proper water pressure is reached. • A plumbing permit and services of a licensed plumber may be required in some areas. • External filters, strainers, or softeners may be required depending on water quality. Contact your local Hoshizaki distributor for recommendations. • Water supply pressure should be a minimum of 10 PSIG and a maximum of 113 PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve is required. • The icemaker and condensation drain line(s), storage bin drain line, and water-cooled condenser drain line (if applicable) must be run separately. -
Page 21: Icemaker
1/2" FPT Condensation Drain Outlet 3/8" OD Stainless Tube Icemaker Drain Outlet 3/4" FPT KM-650MAH and KM-650MRH Fig. 12 Icemaker Water Supply Line Drain Valve Bin Drain Outlet 3/4" FPT Separate piping to approved drain. Leave a two-inch (5 cm) vertical air gap between the end of each pipe and the drain. -
Page 22: Water-Cooled Condenser
2. Water-Cooled Condenser a) Connection to an Open Drain System • Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of 3/8" OD copper tubing is recommended for the condenser water supply line. • A condenser water supply line shut-off valve and drain valve should be installed. • Condenser drain outlet is 3/8" FPT. A minimum of 3/8" OD hard pipe is recommended for the condenser drain line. • In some areas, a back flow preventer may be required in the cooling water circuit. Icemaker Water Supply Inlet Icemaker 1/2" FPT Condenser Water Supply Inlet 1/2" FPT Condenser Drain Outlet 3/8" FPT Condensation... - Page 23 b) Connection to a Closed Loop System • Condenser water supply inlet is 1/2" female pipe thread (FPT). A minimum of 3/8" OD copper tubing is recommended for the condenser water supply line. • Condenser return outlet is 3/8" FPT. A minimum of 3/8" OD hard pipe is recommended for the condenser return line. • Shut-off valves and drain valves should be installed at both the condenser water supply inlet and condenser return outlet. • The water supply to the condenser should not drop below 4 GPM. • The pressure differential between the condenser water supply inlet and condenser return outlet must be no less than 10 PSIG. • When using a glycol blend, the solution mixture should be less than 30% glycol. • In order to maintain the proper high side pressure, the condenser water supply inlet temperature should not drop below 45°F (7°C) and the condenser return outlet temperature must be in the 104°F to 115°F (40°C to 46°C) range.
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Page 24: Final Checklist
H. Final Checklist CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after installation. Make sure that none have fallen into the storage bin. 1) Is the icemaker level? 2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to 38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around? 3) Is there at least 6" (15 cm) clearance at sides, rear, and top of the icemaker for proper air circulation and ease of maintenance and service? -
Page 25: Startup
I. Startup 1. All parts are factory-adjusted. Improper adjustments may adversely affect safety, performance, component life, and warranty coverage. 2. If the icemaker is turned off, wait for at least 3 minutes before restarting the icemaker to prevent damage to the compressor. 3. -
Page 26: Cleaning And Maintenance
A. Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this unit at least once a year. More frequent cleaning and sanitizing, however, may be required in some existing water conditions. -
Page 27: Cleaning Procedure
1. Cleaning Procedure 1) Dilute 16 fl. oz. (473 ml) of Hoshizaki "Scale Away" with 3 gal. (11 l) of warm water. 2) Remove all ice from the evaporator and the storage bin. Note: To remove cubes on the evaporator, turn off the power supply and turn it back on after 3 minutes. The harvest cycle starts and the cubes will be removed from the evaporator. -
Page 28: Sanitizing Procedure - Following Cleaning Procedure
22) Replace the front panel in its correct position. 23) Turn on the power supply to rinse off the cleaning solution. 24) Turn off the power supply after 5 minutes. 25) Remove the front panel. 26) Disconnect one end of the pump tubing to drain the water tank. After the water tank has drained, reconnect the pump tubing. -
Page 29: Maintenance
B. Maintenance This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. 1. Only qualified service technicians should attempt to service or maintain this icemaker. 2. Disconnect power before performing service or maintenance. 1. -
Page 30: Preparing The Icemaker For Long Storage
C. Preparing the Icemaker for Long Storage 1. When storing the icemaker for an extended time or in sub-freezing temperatures, follow the instructions below to prevent damage. 2. To prevent damage to the water pump seal, do not operate the icemaker with the control switch in the "WASH" position when the water tank is empty. - Page 31 5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring. While holding the valve open, blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out. 6) Close the drain valve(s).
- Page 32 HOSHIZAKI AMERICA, INC. 618 Hwy. 74 S., Peachtree City, GA 30269 USA TEL (770) 487-2331 FAX (770) 487-3360 www.hoshizaki.com 91A1KN10C...
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