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Hoshizaki
KM-650MAH, KM-650MRH, KM-650MWH service manual Psig
Models:
KM-650MWH
KM-650MRH
KM-650MAH
1
27
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Specification
Wiring Diagrams
Control Board Replacement
Maintenance
Cleaning Procedure
Default Dip Switch Settings
Harvest Timer dip switch 1
Refrigerant Recovery
Features
Page 27
Image 27
2.
KM-650MRH
(remote
air-cooled)
*
12V
* Pressure Switch
Cut-out
412±
21
PSIG
0
Cut-in
327±21 PSIG
27
Page 26
Page 28
Page 27
Image 27
Page 26
Page 28
Contents
KM-650MAH KM-650MWH KM-650MRH
Hoshizaki AMERICA, INC
Contents
Page
KM-650MAH air-cooled
Specifications Icemaker
Water Cooled Condenser
KM-650MWH water-cooled
KM-650MRH remote air-cooled
URC-5F
Condensing Unit
Model URC-5F
Specifications
II. 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 Products E Control Board
Control Board Layout
Control Board
Maximum Water Supply Period 6 minutes
Features
LED Lights and Audible Alarm Safeties
Default Dip Switch Settings
Controls and Adjustments
Harvest Timer dip switch 1
Pump-Out Frequency Control dip switch 5
Control Board Replacement
Control Board Check Procedure
KM-650MAH air-cooled
KM-650MWH water-cooled
KM-650MRH remote air-cooled
KM-650MAH air-cooled and KM-650MWH water-cooled
Wiring Diagrams
Psig
108
Performance Data
680
615
IV. Service Diagnosis Minute KM Diagnostic Procedure
No Ice Production
Diagnostic Charts
Problem Possible Cause Remedy
Problem Possible Cause Remedy
Problem Possible Cause Remedy
Evaporator is Frozen Up
Low Ice Production
Abnormal Ice
Other
Problem Possible Cause Remedy
Evacuation and Recharge R-404A
Removal and Replacement of Components
Service for Refrigerant Lines
Refrigerant Recovery
Brazing
Removal and Replacement of Compressor
Removal 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 Thermistor
Removal and Replacement of Pump Motor
Removal and Replacement of Inlet Water Valve
Removal and Replacement of Spray Tubes
Cleaning and Sanitizing Procedures
VI. Cleaning and Maintenance Instructions
Cleaning Procedure
Maintenance
Sanitizing Procedure Following Cleaning Procedure
Stainless Steel Exterior
Condenser air-cooled and remote air-cooled models only
Preparing the Icemaker for Long Storage
Storage Bin and Scoop
Air Filters air-cooled models only
Drain the potable water tank
Drain the potable water supply line
