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Manitowoc QY0454A User Manual

Manitowoc QY0454A
175 pages
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ICE MACHINES
Q
-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 QY0454A Specifications

General IconGeneral
ModelQY0454A
TypeUndercounter Ice Maker
CondenserAir-cooled
Power Supply115V, 60Hz
RefrigerantR-404A

Summary

Safety and Procedural Notices

Safety Notice Types

Describes Warning, Caution, and Personal Injury Potential notices.

Procedural Notice Types

Defines Important and Note procedural notices.

Section 1 General Information

Model Identification and Warranty

Model numbers, cube sizes, serial location, and warranty coverage.

Section 2 Installation Instructions

Unit Dimensions and Clearances

Physical dimensions for ice machines, bins, and condensers.

Electrical Service Requirements

Guidelines for voltage, fuses, breakers, and ampacity.

Section 3 Maintenance Procedures

Component Identification

Identification of key components within the ice machine.

Operational Checks

Procedures for checking water level and ice thickness.

Section 4 Ice Machine Sequence of Operation

Self-Contained Unit Operation Sequence

Step-by-step operation for self-contained models.

Remote Unit Operation Sequence

Step-by-step sequence for remote models.

Section 5 Water System Operation

Start-up, Freeze, and Harvest Cycles

Water flow and system operation during ice making cycles.

Water Level Control Circuitry

How water level probe and safety shut-off function.

Section 6 Electrical System Diagnostics

Wiring Diagrams and Legends

Explanations of electrical diagrams and their symbols.

Component Specifications and Diagnostics

Details on fuses, switches, and compressor diagnostics.

Section 7 Refrigeration System Analysis

Self-Contained Refrigeration Sequence

Prechill and freeze cycle operation for self-contained models.

Harvest Cycle Refrigeration Sequence

Hot gas flow and evaporator heating during harvest.

Operational Analysis Diagnostics

Analyzing refrigeration system issues and common misdiagnoses.

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