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Manitowoc QR0280A - User Manual

Manitowoc QR0280A
175 pages
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ICE MACHINES
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-Mode
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Service Manual
Service Manual
Service Manual
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2004 Manitowoc Ice, Inc.
80-1597-3
6/04

Table of Contents

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Manitowoc QR0280A Specifications

General IconGeneral
ModelQR0280A
Ice TypeCube
Condenser TypeAir-Cooled
Water Connection3/8" FPT
RefrigerantR-404A
TypeIce Maker
Ice Production Capacity280 lbs/day
Ice StorageNot included. Requires separate ice storage bin.
Voltage208-230V
Amperage15A

Summary

General Information

Warranty Coverage

Outlines the general parts, labor, and exclusions for the product warranty.

Installation Instructions

Electrical Service Requirements

Details voltage, fuse/breaker, and ampacity requirements for electrical hookup.

Self-Contained Electrical Wiring Connections

Diagrams showing electrical wiring connections for self-contained models.

Remote Electrical Wiring Connections

Diagrams for electrical wiring connections of remote ice machine models.

Remote Condenser;Line Set Installation

Procedures for installing remote condensers and line sets.

Maintenance

Operational Checks

Procedures for performing routine operational checks on the ice machine.

Cleaning the Condenser

Instructions for cleaning air-cooled condensers to ensure efficient operation.

Interior Cleaning and Sanitizing

Procedures for cleaning and sanitizing the ice machine's interior.

Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled Models

Describes the operational sequence for self-contained ice machines.

Remote Models Sequence of Operation

Details the operational sequence for remote ice machine configurations.

Water System Ice Making Sequence of Operation

Freeze Cycle Operation

Describes the freeze cycle, including prechill and water flow.

Electrical System

Wiring Diagram Sequence of Operation

Explains wiring diagrams and sequences for various models.

Component Specifications and Diagnostics

Details specifications and diagnostic checks for key electrical components.

Ice Thickness Probe Operation

Explains how the ice thickness probe works and its functions.

Diagnosing Ice Thickness Control Circuitry

Troubleshooting guide for ice thickness control circuit malfunctions.

Diagnosing Freeze Cycle Potable Water Level Control Circuitry

Troubleshooting guide for water trough overfilling issues.

Diagnosing An Ice Machine That Will Not Run

Troubleshooting steps for an ice machine that fails to start.

Refrigeration System

Safety Limits Explained

Details safety limit controls and their indications.

Safety Limit #1 Troubleshooting

Troubleshooting guide for safety limit #1 (long freeze times).

Safety Limit #2 Troubleshooting

Troubleshooting guide for safety limit #2 (long harvest times).

Analyzing Discharge Pressure

Procedure for analyzing discharge pressure during cycles.

Analyzing Suction Pressure During Freeze Cycle

Guide for analyzing suction pressure during the freeze cycle.

Low On Charge Verification

Procedure to verify if the ice machine is low on refrigerant charge.

Refrigerant Recovery;Evacuation and Recharging

Procedures for recovering, evacuating, and recharging refrigerant.

Self-Contained Charging Procedures

Steps for charging self-contained ice machines with refrigerant.

Remote Charging Procedures

Steps for charging remote ice machines with refrigerant.

System Contamination Clean-Up

Basic requirements for restoring contaminated refrigeration systems.

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