Hoshizaki KM-630MWH, KM-630MRH, KM-630MAH service manual Removal and Replacement of Spray Tubes

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3)Remove the Base Cover.

4)Drain the Water Tank by removing one end of the Pump Tubing.

5)Replace the removed parts in their correct positions.

6)Disconnect the Pump Suction and Discharge Hoses.

7)Remove the screws and the Pump Motor Bracket.

8)Remove the closed end connectors from the Pump Motor leads.

9)Remove the two screws and the Pump Motor Bracket.

10)Remove the Pump Housing, and check the Impeller.

11)If the Impeller is defective, install a new Impeller.

12)Install the new motor or new parts, and replace the removed parts in the reverse order of which they were removed.

13)Turn on the power supply, and check for leaks.

14)Replace the Base Cover in its correct position.

15)Replace the Front Panel in its correct position.

15. REMOVAL AND REPLACEMENT OF SPRAY TUBES

1)Turn off the power supply.

2)Remove the Front Panel and the Insulation Panel.

3)Remove the Rubber Hoses from the Spray Tubes (Water Supply Pipe).

4)Release the Clamps, and disconnect the Rubber Hoses.

5)Remove the Spray Tubes by squeezing the side tabs.

6)Install the new Spray Tubes, and replace the removed parts in the reverse order of which they were removed.

7)Replace the panels in their correct positions.

8)Turn on the power supply.

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Contents KM-630MAH KM-630MWH KM-630MRH Hoshizaki AMERICA, INC Contents Maintenance Specifications KM-630MAH Water TEMP. F2a. KM-630MWH Serial #L00001D M20270B 2b. KM-630MWH Serial #M20301E KM-630MRH Condenser Unit URC-6FSpecifications II. General Information Construction KM-630MAHKM-630MWH KM-630MRH Features of Control Products E Controller Board Controller BoardSOLID-STATE Control Controller BoardPage Beep every 3 sec. = High Evaporator Temperature 127 F Minute Fill CycleHarvest Cycle Freeze CycleControl Products HOS-001A Board Sequence 1st Cycle Important Water Valve opening is limited to 6 minutes2nd Cycle and after with pump drain 2nd Cycle and after with no pump drain Controls and Adjustments For Models with ThermostatPage Setting Time Models with Thermostat Models with Mechanical BIN Control Checking the Controller BoardProximity Switch Mechanical BIN ControlExplanation of Operation Troubleshooting Mechanical BIN Control only KM-630MAH KM-630MWH KM-630MRH Wiring Diagrams Page B1 KM-630MRH with auxiliary codes L-0, M-0, M-1 B2 KM-630MRH with auxiliary codes M-2 and after Timing Chart Page Performance Data 157B1 KM-630MWH Serial #L00001D M20270B Pressure Drop of Cooling Water LineB2 KM-630MWH Serial #M20301E 603 IV. Service Diagnosis 1. no ICE Production Problem Possible Cause RemedyController Board Problem Possible Cause Remedy Evaporator is Frozen UP ThermistorLOW ICE Production Abnormal ICEOthers Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Important Page Removal and Replacement of Drier Removal and Replacement of Expansion ValveRemoval and Replacement of HOT GAS Valve and Line Valve Page Removal and Replacement of Evaporator Important Page Adjustment of Water Regulating Valve WATER-COOLED Model only Page Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes VI. Cleaning and Maintenance Instructions Preparing the Icemaker for Long StoragePage Cleaning and Sanitizing Procedures Cleaning Procedure Page Sanitizing Procedure Maintenance