Hoshizaki KML-631MAH Instruction Manual
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Hoshizaki KML-631MAH Instruction Manual

Hoshizaki KML-631MAH Instruction Manual

Low-profile modular crescent cuber
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Hoshizaki
Hoshizaki America, Inc.
"A Superior Degree
of Reliability"
www.hoshizaki.com
Low-Profile Modular Crescent Cuber
Models
KML-631MAH
KML-631MWH
KML-631MRH
INSTRUCTION MANUAL
Issued: 3-16-2007
Revised: 1-31-2013

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Summary of Contents for Hoshizaki KML-631MAH

  • Page 1 Hoshizaki Hoshizaki America, Inc. Low-Profile Modular Crescent Cuber Models KML-631MAH KML-631MWH KML-631MRH INSTRUCTION MANUAL “A Superior Degree of Reliability” www.hoshizaki.com Issued: 3-16-2007 Revised: 1-31-2013...
  • 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.

  • Page 3: Table Of Contents

    CONTENTS Important Safety Information ....................4 I. Specifications ........................5 A. Nameplate Rating ......................5 1. KML-631MAH (air-cooled) ..................5 2. KML-631MWH (water-cooled) .................. 6 3. KML-631MRH (remote air-cooled) ................7 B. Dimensions/Connections ....................8 1. KML-631MAH (air-cooled) ..................8 2.

  • 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. KML-631MAH (air-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER KML-631MAH SERIAL NUMBER AC SUPPLY VOLTAGE 208-230/60/1 (3 WIRE WITH NEUTRAL FOR 115V) COMPRESSOR 208-230V 6.4RLA 54LRA PUMP 120V 0.5FLA 23W 120V 0.85FLA 50W OTHER 115-120V 0.15A...

  • Page 6: Kml-631Mwh (Water-Cooled)

    2. KML-631MWH (water-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER KML-631MWH SERIAL NUMBER AC SUPPLY VOLTAGE 208-230/60/1 (3 WIRE WITH NEUTRAL FOR 115V) COMPRESSOR 208-230V 6.1RLA 54LRA PUMP 120V 0.5FLA 23W --- --- --- OTHER 115-120V 0.15A MAXIMUM FUSE SIZE 20 AMPS MAX.

  • Page 7: Kml-631Mrh (Remote Air-Cooled)

    3. KML-631MRH (remote air-cooled) HOSHIZAKI ICE MAKER MODEL NUMBER KML-631MRH SERIAL NUMBER AC SUPPLY VOLTAGE 208-230/60/1 (3 WIRE WITH NEUTRAL FOR 115V) COMPRESSOR 208-230V 6.4RLA 54LRA PUMP 120V 0.5FLA 23W FAN REMOTE 120V 3A MAX OTHER 115-120V 0.3A MAXIMUM FUSE SIZE 20 AMPS MAX.

  • Page 8: Dimensions/Connections

    B. Dimensions/Connections 1. KML-631MAH (air-cooled)

  • Page 9: Kml-631Mwh (Water-Cooled)

    2. KML-631MWH (water-cooled)

  • Page 10: Kml-631Mrh (Remote Air-Cooled)

    3. KML-631MRH (remote air-cooled)

  • Page 11: Installation And Operating Instructions

    • This icemaker can be installed on a dispenser unit or storage bin 30" wide or wider. The following are recommended: Hoshizaki Dispenser, Model DB-200 or DM series; Hoshizaki Ice Storage Bin, Model B-500 series. 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-9F is recommended.

  • Page 12: Location

    C. Location CAUTION 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 WARNING 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 WARNING 1. Installation of remote condenser unit must be performed by properly trained and EPA-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

    4. Line Set CAUTION The icemaker, line set, and remote condenser unit must contain the same type of refrigerant. Mixing of refrigerants will result in improper operation and possible damage to the refrigeration system. • 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." • The maximum line length for the standard refrigerant charge is 66 feet. With additional refrigerant, the maximum line length is 100 feet. For details, see "II.F.5. Refrigerant Charge (Line Set Exceeding 66 Feet)."...

  • Page 16: B) Field Fabricated Line Set Installation

    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.

  • Page 18: Refrigerant Charge (Line Set Exceeding 66 Feet)

    The maximum line length for the standard refrigerant charge is 66 feet. Should an installation require a longer line length, additional refrigerant must be added. Add 0.4 oz. of R-404A for each foot over 66 feet to a maximum of 100 feet. Hoshizaki Technical Support is available at 1-800-233-1940 for recommendations.

  • Page 19: Stacking Remote Condenser Units

    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. Use wire of an appropriate gage and outdoor rating. 5) Replace the junction box covers and the louver panel in their correct positions. Remote Condenser Unit Icemaker Screws...

  • 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 drain line, dispenser unit/storage bin drain line, and water-cooled condenser drain line (if applicable) must be run separately.

  • Page 21: Icemaker

    Bin Drain Outlet 3/4" FPT Separate piping to approved drain. Leave a 2-inch (5-cm) vertical air Icemaker gap between the end of each pipe Drain Outlet and the drain. 3/4" FPT 2-inch (5-cm) air gap Vent Tube Floor Drain KML-631MAH and KML-631MRH Fig. 12...

  • 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. Minimum 3/8" OD Copper Tubing Icemaker Water Supply Line Icemaker Shut-Off Valve Water Supply Icemaker Inlet Condenser Water Supply Line 1/2" FPT Shut-Off Valve Vent Tube...

  • Page 23: B) Connection To A Closed Loop System

    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 copper tubing 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.

  • Page 24: Final Checklist

    H. Final Checklist WARNING CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after installation. Make sure that none have fallen into the dispenser unit/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 WARNING 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 8) In bad or severe water conditions, clean the float switch assembly as described below. Otherwise, continue to step 9. a. Remove the 3 screws securing the float switch assembly, then remove the assembly. b. Remove the retainer rod from the bottom of the float switch housing, then remove the float. Be careful not to bend the retainer rod excessively when removing it. c. Wipe down the float switch housing, shaft, float, and retainer rod with cleaning solution. Rinse the parts thoroughly with clean water. d. Reassemble the float switch assembly and replace it in its correct position. Secure the float switch assembly with the screws. 9) Pour the cleaning solution into the water tank. 10) Move the service switch to the "WASH" position. 11) Replace the front insulation panel and the front panel in their correct positions. 12) Turn on the power supply to start the washing process.

  • Page 28: Sanitizing Procedure - Following Cleaning Procedure

    2. Sanitizing Procedure - Following Cleaning Procedure 1) Dilute 1.25 fl. oz. (37 ml or 2.5 tbs) of a 5.25% sodium hypochlorite solution (chlorine bleach) with 2.5 gal. (9.5 l) of warm water. 2) Remove the front insulation panel. 3) Pour the sanitizing solution into the water tank. 4) Move the service switch to the "WASH" position. 5) Replace the front insulation panel and the front panel in their correct positions. 6) Turn on the power supply to start the sanitizing process.

  • Page 29: Maintenance

    B. Maintenance This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. WARNING 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 CAUTION 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, do not leave the control switch in the "SERVICE" position for extended periods of time when the water tank is empty.
  • Page 31 3) Open the condenser water supply line drain valve. If connected to a closed loop system, also open the condenser return line drain valve. 4) Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve. 5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring.
  • 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 1A2911-010...

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Kml-631mwhKml-631mrh

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