Hoshizaki KM-650MRH Wiring Diagrams, KM-650MAH air-cooled and KM-650MWH water-cooled

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B. Wiring Diagrams

1. KM-650MAH (air-cooled) and KM-650MWH (water-cooled)

*	12V

* Pressure Switch

	Air-Cooled Model	Water-Cooled Model
Cut-out	412±210 PSIG	384±210 PSIG
Cut-in	327±21 PSIG	284±21 PSIG

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Image 26

Contents KM-650MAH KM-650MWH KM-650MRH Hoshizaki AMERICA, INC Contents Page Specifications Icemaker KM-650MAH air-cooledKM-650MWH water-cooled Water Cooled CondenserKM-650MRH remote air-cooled Condensing Unit URC-5FSpecifications Model URC-5FII. 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 Features Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties Controls and Adjustments Default Dip Switch SettingsHarvest Timer dip switch 1 Pump-Out Frequency Control dip switch 5 Control Board Check Procedure Control Board Replacement KM-650MAH air-cooled KM-650MWH water-cooled KM-650MRH remote air-cooled Wiring Diagrams KM-650MAH air-cooled and KM-650MWH water-cooledPsig Performance Data 108680 615 IV. Service Diagnosis Minute KM Diagnostic Procedure Diagnostic Charts No Ice ProductionProblem Possible Cause Remedy Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Other Low Ice ProductionAbnormal Ice Problem Possible Cause Remedy Refrigerant Recovery Removal and Replacement of ComponentsService for Refrigerant Lines Evacuation and Recharge R-404ARemoval and Replacement of Compressor BrazingRemoval 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 Thermistor Removal and Replacement of Fan MotorRemoval and Replacement of Inlet Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes VI. Cleaning and Maintenance Instructions Cleaning and Sanitizing ProceduresCleaning Procedure Stainless Steel Exterior MaintenanceSanitizing Procedure Following Cleaning Procedure Air Filters air-cooled models only Preparing the Icemaker for Long StorageStorage Bin and Scoop Condenser air-cooled and remote air-cooled models onlyDrain the potable water supply line Drain the potable water tank

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