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Cornelius IAC322 User Manual

Cornelius IAC322
66 pages
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TD 204(Metric)
ICE MAKER
POCKET GUIDE
“I” SERIES CUBE
ICE MAKERS
IMI CORNELIUS
One Cornelius Place
Anoka, MN 55303
1–800–238–3600
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Cornelius IAC322 Specifications

General IconGeneral
BrandCornelius
ModelIAC322
CategoryIce Maker
LanguageEnglish

Summary

Introduction to Ice Maker Operation

Original Owner and End-User Responsibility

Details the responsibilities of the original owner and end-user for the ice maker's maintenance and care.

Ice Maker Identification and Serial Numbers

Serial Plate Locations

Specifies the locations where serial plates can be found on the ice maker unit.

Model and Serial Number Definition

Explains the meaning of characters in the model and serial numbers for older units.

Serial Number Definition After January 1, 1995

Details the format and meaning of serial numbers for ice makers manufactured after a specific date.

Ice Maker Electrical Specifications

Remote Condenser Specifications

Ice Maker Capacity Information

Understanding Ice Capacity

Explains factors influencing ice maker output and provides general capacity notes.

Performing an Ice Production Check

Guides on how to measure and verify the ice maker's daily ice production rate.

Adjusting Ice Bridge Thickness

Ice Maker Sequence of Operation

Circuit Board Functionality

Explains the role of the circuit board in controlling the ice maker through sensor inputs.

Ice Maker LED Diagnostics

LED Indicators Overview

Explains the role of LEDs as circuit indicators and lists specific LED functions.

LED Status Indicator Chart

Correlates LED status with operational modes like Pre-Chill, Ice Making, and Harvest.

Error LED Conditions

Details specific error codes indicated by the red D5 LED and their troubleshooting implications.

Ice Maker Control and Configuration

Reset Operation Procedures

Instructions on how to reset the ice maker after a shutdown or error condition.

Voltage Selector Switch Usage

Details on how to set the voltage selector switch for proper unit operation.

Stacking Cable and Test Plug

Information on connecting multiple units and accessing test points for diagnostics.

Dump Cycle Options

Ice Maker Operational Controls and Diagnostics

Condenser Fan Cycling Control

Explains how the circuit board controls the condenser fan based on temperature for air-cooled units.

Harvest Safety Termination

Describes the safety timer that terminates the harvest mode to protect the evaporator.

Circuit Board Diagnosis Procedure

Step-by-step guide for diagnosing circuit board faults using LED indicators.

Ice Maker Sensors and Functionality

Sensor [Thermistor] Diagnosis

Detailed procedures for testing and diagnosing faults in thermistor sensors.

Ice Maker Switches and Valves

Evaporator Switch Functionality

Explains how evaporator proximity switches signal the control board for cycle changes and bin conditions.

Water Regulating Valve Operation

Details the function and adjustment of the water regulating valve for proper head pressure control.

Ice Maker Safety Features and Water Level Control

High Pressure Safety Switch

Describes the function of the high pressure safety cut-out switch in protecting the refrigeration system.

Float Valve and Flow Washer

Explains the float valve's function and the flow washer's role in controlling water inlet pressure.

Refrigeration System Service Procedures

Service Stem Valve Operation

Procedures for closing service stem valves to safely remove gauges and manifold sets.

Thermostatic Expansion Valve (TXV) Diagnosis

Steps for diagnosing TXV issues, including checks for condenser cleanliness, water flow, and refrigerant charge.

Ice Maker Diagnosis: TXV Issues

Head Pressure Control Valve (Headmaster)

Compressor Electrical Components

Contactor Compressor Function

Details the role of the contactor as the voltage supply switch for the compressor circuit.

Compressor Start-Up Component Checks

Procedure for troubleshooting compressor start failures, including checking capacitors and relays.

Ice Maker Relay and Capacitor Checks

Relay Function and Types

Explains potential and current type relays and how they operate in the compressor start circuit.

Capacitor Testing and Replacement

Methods for checking capacitors for defects and guidelines for replacement.

Compressor Testing Procedures

Moisture Contamination in Refrigeration Systems

Ice Maker Wiring Diagrams

Remote Condenser Wiring Diagram

Ice Maker Troubleshooting Guide

Troubleshooting: Cuber Not Operating

Addresses issues where the cuber is not operating and indicator lights are off or no power is detected.

Troubleshooting: Compressor Issues

Diagnoses problems when the compressor runs but does not cool, or the circuit board indicator is on.

Troubleshooting: Cuber Stuck in Freeze Cycle

Diagnoses reasons for the cuber remaining in the freeze cycle, such as sensor issues or incorrect settings.

Troubleshooting: Cuber Stuck in Harvest Cycle

Addresses situations where the cuber remains in the harvest cycle, often due to thermistor or proximity switch faults.

Ice Maker Cleaning Procedures

Preparation and General Cleaning

Guidelines for preparing the unit and cleaning internal surfaces with approved cleaners.

Cleaning the Water System and Evaporator

Step-by-step process for cleaning the water system and evaporator components.

Sanitizing Procedures

Steps for sanitizing the ice maker after cleaning, using bleach or commercial sanitizers.

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