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Manitowoc QY1004A User Manual

Manitowoc QY1004A
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 QY1004A Specifications

General IconGeneral
BrandManitowoc
ModelQY1004A
CategoryIce Maker
LanguageEnglish

Summary

Safety Notices

Procedural Notices

Attend a Manitowoc Factory Service School

Section 1 General Information

Model Identification and Ice Cube Sizes

Covers model number interpretation and ice cube dimensions.

Section 2 Installation Instructions

Ice Machine & Storage Bin Dimensions

Details physical dimensions of ice machines, bins, and remote condensers.

Installation Site & Electrical Requirements

Covers location criteria, clearance, and electrical service needs.

Wiring Connections

Illustrates electrical wiring diagrams for self-contained models.

Remote Electrical Wiring

Wiring diagrams for remote ice machines.

Water Supply & Drain Requirements

Guidelines for water inlet and drain connections.

Remote Condenser & Line Set Installation

Procedures for installing remote condensers and their line sets.

Section 3 Maintenance

Operational Checks & Component ID

Covers operational checks and identification of key machine components.

Condenser and Interior Cleaning

Details procedures for cleaning the condenser and interior surfaces.

Water Treatment & Winterization

Explains water filtration and procedures for removing the machine from service.

Section 4 Ice Machine Sequence of Operation

Self-Contained Operation Sequence

Explains the operational steps for self-contained ice machines.

Remote Operation Sequence

Describes the operational sequence for remote ice machines.

Section 5 Water System Ice Making Sequence of Operation

Startup & Freeze Cycle Operation

Covers initial startup, freeze cycle water flow, and safety shut-off.

Harvest & Automatic Shut-Off

Details water system actions during harvest and automatic shut-off.

Section 6 Electrical System

Energized Parts Charts (Self-Contained)

Lists energized components for self-contained models during operation.

Wiring Diagram Sequence (Self-Contained)

Illustrates operational sequences using wiring diagrams for self-contained units.

Energized Parts Charts & Wiring Diagrams (Remote)

Charts and diagrams for remote model operation sequences.

Component Specs & Diagnostics

Specifications and troubleshooting for main electrical components.

Ice Thickness & Water Level Control

Details on ice thickness probe, water level control, and their diagnostics.

Troubleshooting No-Start Conditions

A systematic approach to diagnosing why an ice machine will not run.

Section 7 Refrigeration System

Self-Contained Sequence of Operation

Explains the refrigeration cycle for self-contained models.

Prechill & Freeze Cycle Analysis

Covers prechill and freeze cycle refrigerant behavior.

Remote Models Sequence & Schematics

Details remote model operation and refrigerant flow schematics.

Refrigeration System Diagnostics

Provides guidance for analyzing and diagnosing refrigeration system problems.

Service Preparation & Ice Production Check

Guidance on service preparation and procedures for checking ice production.

Installation & Water System Checks

Checklists for installation verification and water system troubleshooting.

Ice Formation Pattern Diagnostics

Using ice formation patterns to diagnose system issues.

Safety Limits Overview & Indications

Explains safety limits, their operation based on control board type, and how to interpret indications.

Safety Limit Troubleshooting

Analyzes reasons for safety limit activation and provides troubleshooting for Safety Limits #1 and #2.

Discharge Pressure Analysis

Procedure and checklists for analyzing discharge pressure during freeze and harvest cycles.

Suction Pressure Analysis

Procedure and checklists for analyzing suction pressure during the freeze cycle.

Evaporator Temperature Comparison

Method to compare evaporator inlet and outlet temperatures for diagnosis.

Harvest Valve & Discharge Line Temp Analysis

Procedures for checking harvest valve temperature and analyzing discharge line temperature.

Using Operational Analysis Tables

Guidance on utilizing tables to diagnose refrigeration system problems and perform final analysis.

H.P.R. System & Headmaster Control Valve

Explains the H.P.R. system and provides diagnostic information for the headmaster control valve.

Refrigerant Charge Verification & Fan Control

Procedures for verifying refrigerant charge and comparing fan cycle control to headmaster.

Pressure Control Specs & Diagnostics

Specifications and diagnostic procedures for fan cycle and HPCO controls.

Operational Data Charts

Tables detailing cycle times, ice production, and refrigerant pressures for different models.

Q200 & Q280 Series Operational Data

Provides operating parameters for Q200 and Q280 series models (air & water-cooled).

Q320 & Q370 Series Operational Data

Provides operating parameters for Q320 and Q370 series models (air & water-cooled).

Q420/Q450 & Q450 Remote Operational Data

Operating parameters for Q420/Q450 series (air/water-cooled) and Q450 remote models.

Q600 Series Operational Data

Operating parameters for Q600 series models (air-cooled, water-cooled, remote).

Q800 Series Operational Data

Operating parameters for Q800 series models (air-cooled, water-cooled, remote).

Q1000 Series Operational Data

Operating parameters for Q1000 series models (air-cooled, water-cooled, remote).

Q1300 Series Operational Data

Operating parameters for Q1300 series models (air-cooled, water-cooled, remote).

Q1600 Series Operational Data

Operating parameters for Q1600 series models (air-cooled, water-cooled, remote).

Q1800 Series Operational Data

Operating parameters for Q1800 series models (air-cooled, water-cooled, remote).

Refrigerant Recovery, Evacuation & Charging

Procedures for safe refrigerant recovery, evacuation, and charging.

System Contamination Cleanup & Severity

Procedures for cleaning contaminated systems and determining the severity of contamination.

Contamination Cleanup Procedures (Mild & Severe)

Detailed procedures for cleaning mild and severe system contamination.

Replacing Pressure Controls Without Refrigerant Removal

Method to replace pressure controls while keeping the refrigerant charge intact.

Filter-Driers & Refrigerant Charges

Details on filter-driers and a table of total system refrigerant charges by model.

Refrigerant Definitions

Explains terms related to refrigerant handling: Recover, Recycle, Reclaim, and New Product Specifications.

Refrigerant Re-Use Policy Guidelines

Outlines Manitowoc's policy and approvals for refrigerant re-use.

HFC Refrigerant Q&A

Addresses common questions regarding HFC refrigerants, compressor oil, and leak detection.

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