Hoshizaki KM-650MWH, KM-650MAH, KM-650MRH service manual Removal and Replacement of Drier

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2)Remove the panels.

3)Recover the refrigerant and store it in an approved container.

4)Remove the terminal cover on the compressor and disconnect the compressor wiring.

5)Remove the hold-down bolts, washers and rubber grommets.

6)Remove the discharge and suction pipes.

7)Remove the compressor. Unpack the new compressor package.

8)Attach the rubber grommets of the prior compressor.

9)Place the compressor in position and secure it using the bolts and washers.

10)Remove the drier, then place the new drier in position.

11)Remove the plugs from the suction, discharge and process pipes.

12)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

13)Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.

14)Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled models, see the nameplate for the required refrigerant charge. For remote air-cooled models, see the charge label in the machine compartment.

15)Connect the terminals and replace the terminal cover in its correct position.

16)Replace the panels in their correct positions.

17)Turn on the power supply.

D.Removal and Replacement of Drier

IMPORTANT

Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

1)Turn off the power supply.

2)Remove the panels.

3)Recover the refrigerant and store it in an approved container.

4)Remove the drier, then place the new drier in position. Install the new drier with the arrow on the drier in the direction of the refrigerant flow.

5)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

6)Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.

7)Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled models, see the nameplate for the required refrigerant charge. For remote air-cooled models, see the charge label in the machine compartment.

8)Replace the panels in their correct positions.

9)Turn on the power supply.

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Contents KM-650MAH KM-650MWH KM-650MRH Hoshizaki AMERICA, INC Contents Page KM-650MAH air-cooled Specifications IcemakerWater Cooled Condenser KM-650MWH water-cooledKM-650MRH remote air-cooled URC-5F Condensing UnitModel URC-5F SpecificationsII. General Information Construction KM-650MWH water-cooled KM-650MRH remote air-cooled Sequence of Operation Cycle Steps Harvest Cycle Freeze Cycle One Minute Control Board Control Board Control Products E Control BoardControl Board Layout Maximum Water Supply Period 6 minutes FeaturesLED Lights and Audible Alarm Safeties Default Dip Switch Settings Controls and AdjustmentsHarvest Timer dip switch 1 Pump-Out Frequency Control dip switch 5 Control Board Replacement Control Board Check ProcedureKM-650MAH air-cooled KM-650MWH water-cooled KM-650MRH remote air-cooled KM-650MAH air-cooled and KM-650MWH water-cooled Wiring DiagramsPsig 108 Performance Data680 615 IV. Service Diagnosis Minute KM Diagnostic Procedure No Ice Production Diagnostic ChartsProblem Possible Cause Remedy Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Other Low Ice ProductionAbnormal Ice Problem Possible Cause Remedy Service for Refrigerant Lines Removal and Replacement of ComponentsRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of CompressorRemoval and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of Hot Gas Valve and Line Valve Removal and Replacement of Evaporator Adjustment of Water Regulating Valve Water-Cooled Model Only Page Removal and Replacement of Fan Motor Removal and Replacement of ThermistorRemoval and Replacement of Pump Motor Removal and Replacement of Inlet Water ValveRemoval and Replacement of Spray Tubes Cleaning and Sanitizing Procedures VI. Cleaning and Maintenance InstructionsCleaning Procedure Stainless Steel Exterior MaintenanceSanitizing Procedure Following Cleaning Procedure Storage Bin and Scoop Preparing the Icemaker for Long StorageAir Filters air-cooled models only Condenser air-cooled and remote air-cooled models onlyDrain the potable water tank Drain the potable water supply line
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