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Manitowoc QR0320A User Manual

Manitowoc QR0320A
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 QR0320A Specifications

General IconGeneral
BrandManitowoc
ModelQR0320A
CategoryIce Maker
LanguageEnglish

Summary

Section 2 Installation Instructions

Electrical Service

Covers general electrical requirements, voltage, fuses, and circuit ampacity.

Self-Contained Electrical Wiring Connections

Provides wiring diagrams for connecting self-contained ice machines.

Remote Electrical Wiring Connections

Presents wiring diagrams for connecting remote ice machine models.

Water Supply and Drain Requirements

Details guidelines for water supply, inlet lines, and drain connections.

Remote Condenser/Line Set Installation

Covers the installation procedures for remote condensers and line sets.

Section 3 Maintenance

Operational Checks

Procedures for checking the ice machine's operation and performance.

Interior Cleaning and Sanitizing

Procedures for cleaning and sanitizing the interior surfaces of the ice machine.

Section 4 Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled Q200/Q280/Q320/Q370/Q420/Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800

Details the operational sequence for self-contained air and water-cooled models.

Remote Q450/Q600/Q800/Q1000/Q1300/Q1600/Q1800

Details the operational sequence for remote ice machine models.

Section 5 Water System Ice Making Sequence of Operation

FREEZE CYCLE

Explains the water flow and fill valve operation during the freeze cycle.

Section 6 Electrical System

Wiring Diagram Sequence of Operation

Explains the sequence of operation through wiring diagrams for self-contained models.

REFRIGERATION SYSTEM START-UP

Describes the start-up sequence for remote models including compressor and fan motor.

Freeze Sequence PRE-CHILL

Explains the pre-chill phase for remote models.

FREEZE

Describes the freeze cycle for remote models.

REMOTE MODELS Initial Start-Up Or Start-Up After Automatic Shut-Off WATER PURGE

Details the water purge sequence for remote models during initial start-up.

Wiring Diagrams

Introduces the electrical wiring diagrams for various ice machine models.

Q200/Q280/Q320 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models with terminal boards.

Q280/Q370 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models without terminal boards.

Q320 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for a specific self-contained model without terminal boards.

Q420/Q450/Q600/Q800/Q1000 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for self-contained models with terminal boards.

Q420/Q450/Q600/Q800/Q1000 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for self-contained models without terminal boards.

Q800/Q1000 - SELF CONTAINED - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for 3-phase self-contained models with terminal boards.

Q800/Q1000 - SELF CONTAINED - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for 3-phase self-contained models without terminal boards.

Q1300/Q1800 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models with terminal boards.

Q1300/Q1600/Q1800 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models without terminal boards.

Q1300/Q1800 - SELF CONTAINED - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for 3-phase self-contained models with terminal boards.

Q1300/Q1600/Q1800 - SELF CONTAINED - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for 3-phase self-contained models without terminal boards.

Q450/Q600/Q800/Q1000 - REMOTE - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for remote models with terminal boards.

Q450/Q600/Q800/Q1000 - REMOTE - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for remote models without terminal boards.

Q800/Q1000 - REMOTE - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for 3-phase remote models with terminal boards.

COMPRESSOR ELECTRICAL DIAGNOSTICS

Provides procedures for diagnosing compressor electrical issues like resistance and seized rotors.

ELECTRONIC CONTROL BOARD

Overview of the electronic control board, its inputs, and indicators.

Ice Thickness Probe (Harvest Initiation)

Explains how the ice thickness probe works and initiates harvest cycles.

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY

Provides troubleshooting steps for diagnosing ice thickness control circuit malfunctions.

DIAGNOSING FREEZE CYCLE POTABLE WATER LEVEL CONTROL CIRCUITRY

Troubleshooting guide for water trough overfilling during the freeze cycle.

Diagnosing An Ice Machine That Will Not Run

Step-by-step guide to diagnose why the ice machine will not run.

Section 7 Refrigeration System

SAFETY LIMITS

Explains built-in safety limits that protect the ice machine from component failures.

Safety Limit #1

Details conditions and troubleshooting for Safety Limit #1 (freeze time exceeded).

Safety Limit #2

Details conditions and troubleshooting for Safety Limit #2 (harvest time exceeded).

ANALYZING DISCHARGE PRESSURE DURING FREEZE OR HARVEST CYCLE

Procedure for analyzing discharge pressure to diagnose refrigeration issues.

ANALYZING SUCTION PRESSURE DURING FREEZE CYCLE

Procedure for analyzing suction pressure to diagnose freeze cycle issues.

Refrigerant Recovery/Evacuation and Recharging

Procedures for recovering, evacuating, and recharging refrigerant safely.

SYSTEM CONTAMINATION CLEAN-UP

Basic requirements and procedures for restoring contaminated refrigeration systems.

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