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Hoshizaki KM-201BAH Service Manual

Hoshizaki KM-201BAH
81 pages
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SERVICE MANUAL
HOSHIZAKI
SELF-CONTAINED
CRESCENT CUBER
MODEL
KM-201BAH
KM-260BAH
KM-201BWH
KM-260BWH
NO. F015-774
ISSUED: MAR. 18, 2009
REVISED: JUN. 17, 2011

Table of Contents

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Hoshizaki KM-201BAH Specifications

General IconGeneral
BrandHoshizaki
ModelKM-201BAH
CategoryIce Maker
LanguageEnglish

Summary

SPECIFICATIONS

Model Specifications

Detailed technical specifications for KM-201BAH, KM-260BAH, KM-201BWH, KM-260BWH models.

GENERAL INFORMATION

Unit Construction Overview

Illustrates the physical components and layout of the icemaker for various models.

Icemaking Compartment Details

Specific breakdown and illustration of the icemaking compartment components.

Sequence of Operation Cycles

Step-by-step explanation of the icemaker's operational cycles, including fill, harvest, and freeze.

Control Board Functionality

Information on the control board's layout, features, and adjustments.

Thermistor Functionality

Explains the thermistor's role in sensing temperature for control and safety functions.

Bin Control System

Operation and troubleshooting for the bin level control switch.

Switches and Their Functions

Details the control and service switches used for operating the icemaker.

TECHNICAL INFORMATION

Water and Refrigerant Circuit Diagrams

Illustrates water and refrigerant flow for KM-201BAH/260BAH and KM-201BWH/260BWH models.

Wiring Diagram Overview

Provides a schematic of the icemaker's electrical connections and components.

Operational Timing Charts

Visual representation of component timing for KM-201BAH, KM-260BAH, KM-201BWH, KM-260BWH models.

Performance Data Tables

Performance metrics for KM-201BAH, KM-260BAH, KM-201BWH, KM-260BWH models under various conditions.

SERVICE DIAGNOSIS

General Diagnostic Procedure

A systematic check for diagnosing electrical and component failures.

Troubleshooting: No Ice Production

Identifies common causes and remedies for the icemaker failing to produce ice.

Troubleshooting: Frozen Evaporator

Addresses issues related to the evaporator freezing up and its impact on cycle time.

Troubleshooting: Low Ice Production

Lists potential causes and solutions for reduced ice production.

Troubleshooting: Abnormal Ice Forms

Explains issues causing cloudy or irregularly shaped ice cubes.

Troubleshooting: Other Operational Issues

Covers problems like the icemaker not stopping or abnormal noises.

REMOVAL AND REPLACEMENT

Refrigerant System Service

Procedures for handling refrigerant, including recovery, leak testing, and recharge.

Brazing Procedures

Guidelines and warnings for performing brazing operations on the system.

Compressor Replacement

Step-by-step instructions for removing and installing the compressor.

Drier Replacement

Procedures for replacing the refrigerant drier, emphasizing proper installation.

Hot Gas Valve Replacement

Steps for removing and installing the hot gas valve, including precautions.

Expansion Valve Replacement

Instructions for replacing the expansion valve, with emphasis on heat protection.

Air-Cooled Condenser Replacement

Procedures for removing and installing the air-cooled condenser assembly.

Water-Cooled Condenser Replacement

Steps for removing and installing the water-cooled condenser.

Fan Motor Replacement

Guide to removing and installing the fan motor for air-cooled models.

Water Regulating Valve Replacement

Instructions for replacing the water regulating valve in water-cooled models.

Water Regulating Valve Adjustment

How to adjust the water regulating valve if necessary for optimal performance.

Pump Motor Replacement

Detailed steps for removing and installing the pump motor.

Water Valve Replacement

Procedures for replacing the water inlet valve.

Drain and Cleaning Valve Replacement

Steps for removing and installing the drain and cleaning valves.

Float Switch Replacement

Instructions for replacing the float switch that monitors water level.

Bin Control Switch Replacement

Guide for removing and installing the bin control switch.

Thermistor Replacement

Steps for replacing the thermistor sensor, including sealant application.

Control Box Components Replacement

Procedures for replacing power switch, fuse, control board, relay, and transformer.

Water Tank Removal and Installation

Procedures for removing and reinstalling the water tank.

Cube Guide Replacement

Instructions for removing and reinstalling the cube guides.

Separator Replacement

Guidance on correctly removing and installing the ice separators.

Spray Tube, Water Pipe, and Spray Guide Replacement

Steps for replacing components related to water distribution to the evaporator.

Door Replacement

Instructions for removing and reinstalling the icemaker door.

CLEANING AND MAINTENANCE INSTRUCTIONS

Icemaker Cleaning Procedures

Detailed steps for cleaning, including sanitizing the icemaker and its parts.

Routine Maintenance Tasks

Maintenance for exterior panels, storage bin, scoop, air filter, and condenser.

Preparing for Extended Storage

Steps to prepare the icemaker for long-term storage, including draining water.

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