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Manitowoc QD0602A - Service Manual

Manitowoc QD0602A
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 QD0602A Specifications

General IconGeneral
Ice TypeDice
Condenser TypeAir-cooled
TypeModular
Power Supply115V/60Hz/1Ph
Water Connection3/8 in
RefrigerantR404A

Summary

Safety and Procedural Notices

Safety Notices

Important warnings and cautions for safe operation and maintenance.

Procedural Notices

Guidelines and tips to assist with operational procedures.

Section 1 General Information

Model Numbers

Identifies the range of models covered by the manual.

How to Read a Model Number

Explains the structure and meaning of model numbers.

Section 2 Installation Instructions

General

Refers to a separate manual for complete installation guidelines.

Ice Machine Dimensions

Provides physical dimensions for various ice machine models.

Ice Storage Bin Dimensions

Lists the dimensions for different ice storage bin models.

Remote Condenser Dimensions

Provides dimensional data for remote condenser units.

Location of Ice Machine

Guidelines for selecting an appropriate installation location.

Electrical Service

Requirements for proper electrical connection and safety.

Self-Contained Electrical Wiring Connections

Wiring diagrams for self-contained ice machines.

Water Supply and Drain Requirements

Guidelines for water supply, inlet lines, and drain connections.

Remote Condenser;Line Set Installation

Procedures for installing remote condensers and connecting refrigerant lines.

CALCULATING REMOTE CONDENSER INSTALLATION DISTANCES

Method for calculating maximum line set lengths and distances.

Installation Check List

A checklist of critical installation steps to verify.

Section 3 Maintenance

Component Identification

Visual identification of major ice machine components.

Operational Checks

Routine checks to ensure proper ice machine function.

ICE THICKNESS CHECK

Procedure to check and adjust ice thickness probe.

Cleaning the Condenser

Steps for cleaning the air-cooled condenser and filter.

Interior Cleaning and Sanitizing

Instructions for cleaning and sanitizing the ice machine interior.

CLEANING PROCEDURE

Detailed steps for cleaning the ice machine.

SANITIZING PROCEDURE

Detailed steps for sanitizing the ice machine.

AUTOMATIC CLEANING SYSTEM (AuCS)

Information on the AuCS accessory for automated cleaning.

REMOVAL OF PARTS FOR CLEANING;SANITIZING

How to remove parts for cleaning and sanitizing.

Water Dump Valve

Procedure for removing and cleaning the water dump valve.

Ice Thickness Probe Cleaning

Instructions for cleaning the ice thickness probe.

Water Inlet Valve

Procedure for checking and cleaning the water inlet valve.

Water Treatment;Filtration

Information on water filtration systems and filter replacement.

Removal from Service;Winterization

Procedures for preparing the machine for storage or freezing conditions.

Section 4 Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled

Operational sequence for self-contained models.

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

Operational sequence for specific remote models.

Section 5 Water System Ice Making Sequence of Operation

INITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF

Steps for initiating water system ice production.

Section 6 Electrical System

Energized Parts Charts

Charts detailing energized components during operational cycles.

SELF-CONTAINED AIR- AND WATER-COOLED MODELS

Energized parts information for self-contained models.

REMOTE MODELS

Energized parts information for remote models.

Wiring Diagram Sequence of Operation

Explains operational sequences based on wiring diagrams.

COMPRESSOR ELECTRICAL DIAGNOSTICS

Procedures for diagnosing compressor electrical issues.

PTCR DIAGNOSTICS

Explanation and diagnosis of the PTCR component.

ICE;OFF;CLEAN TOGGLE SWITCH

Function, testing, and specifications of the toggle switch.

ELECTRONIC CONTROL BOARD

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

Ice Thickness Probe (Harvest Initiation)

How the ice thickness probe works and initiates harvest.

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY

Troubleshooting steps for ice thickness control circuit malfunctions.

Water Level Control Circuitry

Explains water level probe operation and related circuitry.

DIAGNOSING FREEZE CYCLE POTABLE WATER LEVEL CONTROL CIRCUITRY

Troubleshooting guide for water trough overfilling.

Diagnosing An Ice Machine That Will Not Run

Troubleshooting steps for an ice machine that fails to start.

Section 7 Refrigeration System

Sequence of Operation

Explains the refrigeration cycle for different models.

SELF-CONTAINED AIR OR WATER -COOLED MODELS

Refrigeration sequence for self-contained models.

REMOTE MODELS

Refrigeration sequence for remote models.

Q1300;Q1600;Q1800 REFRIGERATION TUBING SCHEMATICS

Refrigeration tubing diagrams for specific models.

Operational Analysis (Diagnostics)

Guide to analyzing refrigeration system issues and diagnosing component malfunctions.

ICE PRODUCTION CHECK

Procedure to check ice production based on operating conditions.

WATER SYSTEM CHECKLIST

Checklist for identifying and resolving water system problems.

ICE FORMATION PATTERN

Analysis of evaporator ice formation for diagnostic purposes.

SAFETY LIMITS

Explains built-in safety limit controls protecting the ice machine.

Safety Limit #1

Details Safety Limit #1 concerning freeze time limitations.

Safety Limit #2

Details Safety Limit #2 concerning harvest time limitations.

Analyzing Why Safety Limits May Stop the Ice Machine

Explains how safety limits function and external factors.

ANALYZING DISCHARGE PRESSURE DURING FREEZE OR HARVEST CYCLE

Procedure to analyze discharge pressure during freeze/harvest cycles.

ANALYZING SUCTION PRESSURE DURING FREEZE CYCLE

Procedure to analyze suction pressure during the freeze cycle.

SINGLE EXPANSION VALVE ICE MACHINES - COMPARING EVAPORATOR INLET AND OUTLET TEMPERATURES

Procedure to compare evaporator temperatures for diagnosis.

HARVEST VALVE TEMPERATURE CHECK

Procedure to check harvest valve temperature.

DISCHARGE LINE TEMPERATURE ANALYSIS

Analyzing discharge line temperature for system diagnostics.

HOW TO USE THE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

Guide on utilizing operational analysis tables for problem diagnosis.

REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

Tables correlating operational data with potential refrigeration issues.

HARVEST PRESSURE REGULATING (H.P.R.) SYSTEM

Explanation of the H.P.R. system for remote models.

HPR DIAGNOSTICS

Diagnostic steps for troubleshooting the H.P.R. system.

HEADMASTER CONTROL VALVE

Operation, diagnosis, and troubleshooting of the headmaster control valve.

Pressure Control Specifications and Diagnostics

Specifications and diagnostic procedures for pressure controls.

HIGH PRESSURE CUT-OUT (HPCO) CONTROL

Function, specifications, and testing of the HPCO control.

Cycle Time;24 Hour Ice Production;Refrigerant Pressure Charts

Charts providing operational data for various ice machine models.

Refrigerant Recovery;Evacuation and Recharging

Procedures for refrigerant recovery, evacuation, and recharging.

Self-Contained Charging Procedures

Step-by-step guide for charging refrigerant into self-contained units.

NORMAL REMOTE MODEL PROCEDURES

Specific procedures for remote models.

REMOTE RECOVERY;EVACUATION

Procedures for refrigerant recovery and evacuation from remote models.

Remote Charging Procedures

Step-by-step guide for charging refrigerant into remote units.

SYSTEM CONTAMINATION CLEAN-UP

Basic requirements for restoring contaminated refrigeration systems.

Mild System Contamination Cleanup Procedure

Steps for cleaning systems with mild contamination.

Severe System Contamination Cleanup Procedure

Steps for cleaning systems with severe contamination.

REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGE

Procedure to replace pressure controls without releasing refrigerant.

FILTER-DRIERS

Information on filter-driers and recommended replacement parts.

TOTAL SYSTEM REFRIGERANT CHARGES

Lists refrigerant charge capacities for various models.

REFRIGERANT DEFINITIONS

Definitions for Recover, Recycle, and Reclaim refrigerant.

REFRIGERANT RE-USE POLICY

Manitowoc's policy on refrigerant re-use and approved types.

HFC REFRIGERANT QUESTIONS AND ANSWERS

Answers common questions about HFC refrigerants and their service.

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