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Koolaire KDT0500A - User Manual

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Part Number STH063 9/17
Koolaire
KT Model Ice Machines
Technician’s Handbook

Table of Contents

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Summary

Safety Notices

General Information

Model Numbers

Lists all Koolaire KT model numbers covered in this manual.

How to Read a Model Number

Explains the designation system for ice machine model numbers.

Installation

Electrical Requirements

Outlines voltage, fuse, and wiring requirements for safe operation.

Maintenance

Interior Cleaning and Sanitizing

Step-by-step guide for cleaning and sanitizing the ice machine's interior.

Troubleshooting

Control Board Test Mode

How to enter and use the control board's test mode for diagnostics.

Diagnosing an Ice Machine that Will Not Run

Systematic steps to identify why the ice machine is not starting.

Ice Machine Does Not Cycle Into Harvest when Water Loses Contact with the Harvest Float Switch

Troubleshooting steps for when the harvest cycle fails to initiate properly.

Ice Machine Cycles Into Harvest Before Water Loses Contact with the Harvest Float Switch

Diagnosing premature harvest cycles related to the float switch.

Ice Production Check

Methods to check and verify the ice machine's daily ice production rate.

Ice Formation Pattern

Analysis of ice formation on the evaporator for diagnostic purposes.

Analyzing Discharge Pressure

Procedure for checking and interpreting discharge pressure readings.

Analyzing Suction Pressure

Method for analyzing suction pressure to diagnose refrigeration issues.

Harvest Valve

Explanation of the harvest valve's function and troubleshooting its operation.

Comparing Evaporator Inlet;Outlet Temperatures

Procedure for comparing evaporator temperatures for diagnostics.

Discharge Line Temperature Analysis

How to analyze discharge line temperature for important diagnostic clues.

Refrigeration Component Diagnostics

Comprehensive guide for diagnosing refrigeration system components.

Component Check Procedures

Compressor Electrical Diagnostics

Steps for diagnosing compressor electrical issues, including resistance checks.

Fan Cycle Control

How to test the fan cycle control for proper operation.

High Pressure Cutout (HPCO) Control

Procedure for checking the HPCO control's cut-out and reset points.

Refrigerant Charge Verification

Procedures for verifying the correct refrigerant charge amount.

Water Regulating Valve

Procedures for checking and diagnosing the water regulating valve.

Refrigerant Recovery;Evacuation

Definitions and procedures for recovering and evacuating refrigerant.

Recovery and Recharging Procedures

Step-by-step guide for safely recovering and recharging refrigerant.

System Contamination Cleanup

Requirements for restoring contaminated refrigeration systems.

Mild System Contamination Cleanup Procedure

Detailed steps for cleaning systems with mild contamination.

Severe System Contamination Cleanup Procedure

Procedures for cleaning systems that have experienced severe contamination.

Replacing Pressure Controls without Removing Refrigerant Charge

Method to replace components without discharging the refrigerant.

Charts

Diagrams

Koolaire KDT0500A Specifications

General IconGeneral
BrandKoolaire
ModelKDT0500A
CategoryIce Maker
LanguageEnglish

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