Hoshizaki KM-900MRH User Manual

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Hoshizaki KM-900MRH Specifications

General

Brand	Hoshizaki
Model	KM-900MRH
Category	Ice Maker
Language	English

Summary

Hoshizaki Icemaker Specifications

KM-900MAH Air-cooled Specifications

Technical specifications for the KM-900MAH air-cooled model.

KM-900MWH Water-cooled Specifications (Serial L00001D-M20500D)

Specifications for KM-900MWH water-cooled model, serial range L00001D-M20500D.

KM-900MWH Water-cooled Specifications (Serial M30501D--)

Specifications for KM-900MWH water-cooled model, serial range M30501D--.

KM-900MRH Remote Air-cooled Specifications

Technical specifications for the KM-900MRH remote air-cooled model.

KM-900MRH3 Remote Air-cooled 3 Phase Specifications

Specifications for KM-900MRH3 remote air-cooled 3 phase model.

URC-12F Condensing Unit Specifications

Detailed specifications for the URC-12F condensing unit.

General Information on Hoshizaki Icemakers

Unit Construction Overview

Details the construction of KM-900MAH, KM-900MWH, KM-900MRH, KM-900MRH3 models.

Controller Board Functions and Safeties

Explains the controller board, its features, safeties, and sequence operations.

Mechanical Bin Control System Explained

Covers operation and troubleshooting for the mechanical bin control.

Technical Information and Diagrams

Water and Refrigerant Circuit Diagrams

Illustrates water and refrigerant circuits for KM-900MAH, KM-900MWH, KM-900MRH/MRH3.

Wiring Diagrams for Icemaker Models

Electrical wiring diagrams for KM-900MAH, KM-900MWH, KM-900MRH, KM-900MRH3.

Icemaker Cycle Timing Chart

Visual timing chart for various icemaker cycles and component operations.

Service Diagnosis and Troubleshooting

Troubleshooting No Ice Production

Identifies causes and remedies for the icemaker producing no ice.

Diagnosing Frozen Evaporator Issues

Addresses problems related to the evaporator freezing up during operation.

Resolving Low Ice Production

Explains causes and solutions for reduced ice production rates.

Troubleshooting Abnormal Ice Formation

Covers issues like small or cloudy ice cubes and their causes.

Addressing Other Icemaker Operational Issues

Discusses problems like the icemaker not stopping or abnormal noises.

Component Removal and Replacement Procedures

Refrigerant Lines Service and Brazing

Procedures for handling refrigerant lines, recovery, evacuation, recharge, and brazing.

Compressor Removal and Replacement

Step-by-step guide for replacing the icemaker compressor unit.

Drier and Expansion Valve Service

Instructions for removing and replacing the filter drier and expansion valve.

Hot Gas and Line Valve Service

Procedures for removing and replacing hot gas and line valves.

Evaporator Removal and Replacement

Detailed steps for removing and installing the icemaker evaporator.

Water Regulating Valve Service and Adjustment

Steps for removing, replacing, and adjusting the water regulating valve.

Thermistor Removal and Replacement

Guide for safely removing and installing the thermistor component.

Fan Motor Removal and Replacement

Instructions for replacing the fan motor assembly.

Water Valve and Pump Motor Replacement

Procedures for replacing the water valve and pump motor.

Spray Tubes Removal and Replacement

Steps for removing and installing the icemaker spray tubes.

Maintenance and Cleaning Instructions

Preparing Icemaker for Long-Term Storage

Instructions for properly preparing the icemaker for extended periods of non-use.

Unit Cleaning and Sanitizing Procedures

Detailed steps for cleaning and sanitizing the icemaker components.

General Icemaker Maintenance Tasks

Routine maintenance for the icemaker's exterior, bin, and condenser.