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Manitowoc QY0894N User Manual

Manitowoc QY0894N
175 pages
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ICE MACHINES
Q
-Mode
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Service Manual
Service Manual
Service Manual
C
2004 Manitowoc Ice, Inc.
80-1597-3
6/04

Table of Contents

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Manitowoc QY0894N Specifications

General IconGeneral
BrandManitowoc
ModelQY0894N
CategoryIce Maker
LanguageEnglish

Summary

Safety Notices

PERSONAL INJURY POTENTIAL

Warning about operating misused, abused, or altered equipment.

Warning Boxes

Alerts to potential personal injury situations during operation.

Caution Boxes

Alerts to situations that could damage the ice machine.

Procedural Notices

Important Notes

Provides useful information for efficient procedure performance.

General Notes

Extra information about the procedure being performed.

Section 1 General Information

Model Numbers

Details the range of models covered by this service manual.

How to Read a Model Number

Explains the structure and meaning of ice machine model numbers.

Ice Cube Sizes

Illustrates and describes the dimensions of different ice cube types.

Model/Serial Number Location

Warranty Coverage

GENERAL

Provides a general outline of the warranty terms.

PARTS

Details the warranty coverage for parts.

LABOR

Details the warranty coverage for labor.

EXCLUSIONS

Lists items and conditions not covered by the warranty.

AUTHORIZED WARRANTY SERVICE

Specifies requirements for authorized warranty service.

Section 2 Installation Instructions

General Installation Guidelines

Refers to a separate manual for complete installation guidelines.

Ice Machine Dimensions

Provides physical dimensions for Q320/Q370/Q420 models.

Ice Machine Dimensions (Continued)

Q200 – Q1000 ICE MACHINES

Provides physical dimensions for Q200-Q1000 models.

Q1300/Q1600/Q1800 ICE MACHINES

Provides physical dimensions for Q1300-Q1800 models.

Ice Storage Bin Dimensions

S170/S400/S570 ICE STORAGE BINS

Provides dimensions for S170, S400, and S570 ice storage bins.

S320/S420 ICE STORAGE BINS

Provides dimensions for S320 and S420 ice storage bins.

Remote Condenser Dimensions

JC0495/JC0895/JC1095/JC1395

Provides dimensions for specific remote condenser models.

JC1895

Provides dimensions for the JC1895 remote condenser.

Location of Ice Machine

Stacking Two Ice Machines

Ice Machine Heat of Rejection

Leveling the Ice Storage Bin

Air-Cooled Baffle Installation

Electrical Service Requirements

VOLTAGE Specifications

Specifies allowable voltage variation for ice machines.

FUSE/CIRCUIT BREAKER

Requirements for providing appropriate fuses or circuit breakers.

MINIMUM CIRCUIT AMPACITY

Guidance for selecting wire size based on ampacity.

Ice Machine Electrical Specifications Tables

Q320/370/420 Ice Machines Electrical Data

Presents electrical specs for Q320/370/420 models.

Q200 - Q1000 Ice Machines Electrical Data

Presents electrical specs for Q200-Q1000 models.

Electrical Wiring Connections

Self-Contained Wiring Diagrams

Wiring diagrams for self-contained ice machines.

United Kingdom Wiring Notes

Color code instructions for UK electrical plugs.

Remote Electrical Wiring Diagrams

Water Supply and Drain Requirements

WATER SUPPLY GUIDELINES

Guidelines for installing water inlet lines.

DRAIN CONNECTIONS GUIDELINES

Guidelines for installing drain lines.

Cooling Tower Applications

Considerations for water-cooled models with cooling towers.

Water Supply and Drain Line Sizing

Remote Condenser and Line Set Installation

REMOTE ICE MACHINES REFRIGERANT CHARGE

Information on refrigerant charge for remote models.

Line Set Routing Guidelines

GENERAL CONDENSER MOUNTING

Condenser mounting requirements with fan motor on top.

GUIDELINES FOR ROUTING LINE SETS

Best practices for routing refrigerant lines to ensure performance.

Calculating Remote Condenser Installation Distances

Line Set Length Adjustments

LENGTHENING OR REDUCING LINE SET LENGTHS

Procedures for adjusting line set lengths before connection.

CONNECTING A LINE SET

Steps for connecting refrigerant line sets and torque specifications.

REMOTE RECEIVER SERVICE VALVE

Instructions for opening the receiver service valve.

Non-Manitowoc Condenser Compatibility

WARRANTY CONSIDERATIONS

Warranty terms when using non-Manitowoc condensers.

HEAD PRESSURE CONTROL VALVE Requirement

Mandatory use of specific head pressure control valve.

FAN MOTOR Control

Guidance on controlling the condenser fan motor.

INTERNAL CONDENSER VOLUME Limits

Limits on condenser volume to prevent compressor failure.

CONDENSER ∆T Guidelines

Temperature difference guidelines for condensers.

REFRIGERANT CHARGE Information

Location of refrigerant charge specifications.

QUICK CONNECT FITTINGS

Notes on quick connect fittings and holding charge.

NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART

Installation Check List

General Installation Checks

Checklist for verifying proper installation of the ice machine.

Additional Checks for Remote Models

Specific verification steps for remote ice machine installations.

Section 3 Maintenance

Component Identification

Diagram identifying key components of the ice machine.

Operational Checks

GENERAL Operational Checks

Routine checks to ensure proper ice machine operation.

WATER LEVEL Check

Information on the water level probe and its adjustment.

ICE THICKNESS CHECK

Procedure for checking and adjusting ice thickness probe.

Condenser Cleaning Procedures

HARVEST SEQUENCE WATER PURGE Adjustment

Adjustment for the water purge duration in the harvest cycle.

AIR-COOLED CONDENSER Cleaning

Steps for cleaning self-contained and remote air-cooled condensers.

Water-Cooled Condenser Cleaning

WATER-COOLED CONDENSER AND WATER REGULATING VALVE Cleaning

Symptoms and cleaning procedures for water-cooled condensers.

Interior Cleaning and Sanitizing

GENERAL Interior Cleaning

Procedures for cleaning and sanitizing the ice machine interior.

MANITOWOC’S PATENTED CLEANING OR SANITIZING TECHNOLOGY

Explanation of automatic cleaning system technology.

ALPHASAN Technology

Information on AlphaSan for cleaner plastic parts.

CLEANING PROCEDURE

SANITIZING PROCEDURE

AUTOMATIC CLEANING SYSTEM (AuCS)

Automatic Operation

How the AuCS accessory operates for automatic cleaning.

REMOVAL OF PARTS FOR CLEANING/SANITIZING

Water Dump Valve Maintenance

Water Pump and Ice Thickness Probe Maintenance

Water Pump Removal

Procedures for removing the water pump.

Ice Thickness Probe Removal

Procedures for removing the ice thickness probe.

Water Level Probe and Inlet Valve Maintenance

Water Level Probe Removal

Procedures for removing the water level probe.

Water Inlet Valve Removal

Procedures for removing the water inlet valve.

Water Distribution Tube and Curtain Maintenance

Water Distribution Tube Removal

Procedures for removing the water distribution tube.

Water Curtain Removal

Procedures for removing the water curtain.

Water Treatment/Filtration

GENERAL Water Treatment

Information on water treatment systems and filter replacement.

FILTER REPLACEMENT PROCEDURE

Steps for replacing filter cartridges in Tri-Liminator systems.

Removal from Service/Winterization

Section 4 Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled Models

Details the operational sequence for self-contained models.

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

Startup sequence for self-contained models.

FREEZE SEQUENCE

Describes the steps involved in the freeze cycle.

Harvest and Automatic Shut-Off Sequences

HARVEST SEQUENCE

Describes the steps involved in the harvest cycle.

AUTOMATIC SHUT-OFF

Explains the automatic shut-off condition for the ice machine.

Remote Ice Machine Sequence

Remote Initial Start-Up

Startup sequence for remote ice machines.

Remote Freeze Sequence

Describes the freeze cycle for remote models.

Remote Harvest and Shut-Off Sequences

Remote Harvest Sequence

Describes the harvest cycle for remote models.

Remote Automatic Shut-Off

Explains the automatic shut-off for remote models.

Section 5 Water System Ice Making Sequence of Operation

FREEZE CYCLE Water Flow

Describes water flow during the freeze cycle.

WATER INLET VALVE SAFETY SHUT-OFF

Safety feature limiting water inlet valve on-time.

Water System Harvest and Shut-Off

HARVEST CYCLE Water Flow

Describes water flow during the harvest cycle.

AUTOMATIC SHUT-OFF Water Flow

Describes water flow during automatic shut-off.

Section 6 Electrical System

Energized Parts Charts Overview

Charts showing component energization during operation cycles.

Self-Contained Models Energized Parts

Energized parts list for self-contained models.

Remote Models Energized Parts

Wiring Diagram Sequence of Operation

Self-Contained Models Sequence

Wiring diagram sequence for self-contained models.

Table 6-1: Water Purge Sequence (Self-Contained)

Component status during water purge for self-contained models.

Refrigeration System Start-Up Sequence

Self-Contained Refrigeration Start-Up

Component status during refrigeration system startup.

Table 6-2: Refrigeration Start-Up (Self-Contained)

Component status during self-contained refrigeration startup.

Freeze Sequence (Pre-Chill)

Self-Contained Pre-Chill Sequence

Component status during freeze sequence pre-chill.

Table 6-3: Pre-Chill Sequence (Self-Contained)

Component status during self-contained pre-chill.

Freeze Sequence (Freeze Cycle)

Self-Contained Freeze Cycle

Component status during the freeze cycle.

Table 6-4: Freeze Cycle (Self-Contained)

Component status during self-contained freeze cycle.

Harvest Sequence (Water Purge)

Self-Contained Water Purge Sequence

Component status during harvest sequence water purge.

Table 6-5: Water Purge Sequence (Self-Contained)

Component status during self-contained water purge.

Harvest Sequence

Self-Contained Harvest Sequence

Component status during harvest.

Table 6-6: Harvest Sequence (Self-Contained)

Component status during self-contained harvest.

Automatic Shut-Off Sequence

Self-Contained Automatic Shut-Off

Component status during automatic shut-off.

Table 6-7: Automatic Shut-Off (Self-Contained)

Component status during self-contained auto shut-off.

Remote Model Electrical Sequences

Remote Wiring Diagram Sequence

Explanation of wiring diagram sequences for remote models.

Remote Initial Start-Up Sequence

Component status during remote model startup.

Table 6-8: Remote Water Purge Sequence

Component status during remote water purge.

Remote Refrigeration System Start-Up

Remote Refrigeration System Start-Up Sequence

Component status during remote refrigeration startup.

Table 6-9: Remote Refrigeration Start-Up

Component status during remote refrigeration startup.

Remote Freeze Sequence (Pre-Chill)

Remote Pre-Chill Sequence

Component status during remote freeze sequence pre-chill.

Table 6-10: Remote Pre-Chill Sequence

Component status during remote pre-chill.

Remote Freeze Sequence (Freeze Cycle)

Remote Freeze Cycle

Component status during remote freeze cycle.

Table 6-11: Remote Freeze Cycle

Component status during remote freeze cycle.

Remote Harvest Sequence (Water Purge)

Remote Water Purge Sequence

Component status during remote harvest sequence water purge.

Table 6-12: Remote Water Purge Sequence

Component status during remote water purge.

Remote Harvest Sequence

Remote Harvest Sequence

Component status during remote harvest.

Table 6-13: Remote Harvest Sequence

Component status during remote harvest.

Remote Automatic Shut-Off Sequence

Remote Automatic Shut-Off

Component status during remote automatic shut-off.

Table 6-14: Remote Automatic Shut-Off

Component status during remote auto shut-off.

Wiring Diagrams

WIRING DIAGRAM LEGEND

Explanation of symbols used in wiring diagrams.

Self-Contained Wiring Diagrams

Q200/Q280/Q320 - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q280/Q370 - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q320 - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

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

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

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

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q800/Q1000 - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q800/Q1000 - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q1300/Q1800 - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q1300/Q1600/Q1800 - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q1300/Q1800 - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

Self-Contained Wiring Diagrams (Continued)

Q1300/Q1600/Q1800 - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

Remote Wiring Diagrams

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

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

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

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q800/Q1000 - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q800/Q1000 - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q1300/Q1800 - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q1300/Q1600/Q1800 - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q1300/Q1800 - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Remote Wiring Diagrams (Continued)

Q1300/Q1600/Q1800 - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Component Specifications and Diagnostics

MAIN FUSE Function and Specs

Function, specifications, and check procedure for the main fuse.

BIN SWITCH Function and Specs

Function, specifications, and check procedure for the bin switch.

Component Check Procedures

Toggle Switch Check Procedure

Procedure for checking the ICE/OFF/CLEAN toggle switch.

Bin Switch Ohm Test

Instructions for performing an ohm test on the bin switch.

Water Curtain Removal Notes

Notes on water curtain removal impact on bin switch operation.

Compressor Electrical Diagnostics

Check Resistance (Ohm) Values

Steps for checking compressor winding resistance.

SINGLE PHASE COMPRESSORS Resistance Test

Resistance testing procedures for single-phase compressors.

THREE PHASE COMPRESSORS Resistance Test

Resistance testing procedures for three-phase compressors.

Check Motor Windings to Ground

Procedure to check compressor windings for ground faults.

Determine if the Compressor is Seized

Steps to diagnose a seized compressor.

COMPRESSOR DRAWING LOCKED ROTOR Diagnosis

Causes and diagnosis for locked rotor condition.

COMPRESSOR DRAWING HIGH AMPS Diagnosis

Diagnosis for high amperage draw on startup.

Diagnosing Capacitors

Guidance on diagnosing compressor start capacitors.

PTCR Diagnostics

What is a PTCR?

Explanation of PTCR function and characteristics.

Compressor Start Sequence with PTCR

How PTCRs assist in compressor startup.

PTCR Troubleshooting

Q-Model Automatic Shut-Off and Restart

Relation of auto shut-off to PTCR cooling.

Troubleshooting PTCR Failure

Common reasons why a PTCR might fail to start the compressor.

CHECKING THE PTCR

Toggle Switch and Control Board Relays

ICE/OFF/CLEAN TOGGLE SWITCH Function

Function, specs, and check procedure for the toggle switch.

CONTROL BOARD RELAYS Function

Overview of control board relays and their functions.

ELECTRONIC CONTROL BOARD Diagram

Control Board Overview

General Control Board Info

Overview of dual voltage transformer and safety limits.

Safety Limits

Explanation of built-in safety limits protecting components.

Control Board Inputs

How inputs affect the control board's operation.

Ice Thickness Probe Operation

Ice Thickness Probe (Harvest Initiation)

How the ice thickness probe initiates the harvest cycle.

HOW THE PROBE WORKS

Explanation of the ice thickness probe's sensing circuit.

HARVEST/SAFETY LIMIT LIGHT Function

Primary and secondary functions of the harvest/safety limit light.

FREEZE TIME LOCK-IN FEATURE

System feature preventing short cycling during freeze.

MAXIMUM FREEZE TIME Limit

Safety feature limiting maximum freeze time.

ICE THICKNESS CHECK Procedure

Procedure for checking and adjusting ice thickness.

Ice Thickness Probe Cleaning

Steps for cleaning the ice thickness probe.

Diagnosing Ice Thickness Control Circuitry

Troubleshooting Premature Harvest

Steps for diagnosing premature harvest cycles.

Troubleshooting Premature Harvest

Ice Machine Cycles Before Water Contact

Troubleshooting steps for premature harvest.

Water Level Control Circuitry

WATER LEVEL PROBE LIGHT Indicator

Monitoring water level using the probe light.

WATER INLET VALVE SAFETY SHUT-OFF

Safety feature limiting water inlet valve on-time.

FREEZE CYCLE CIRCUITRY

Water inlet valve operation during freeze cycle.

HARVEST CYCLE CIRCUITRY

Water inlet valve operation during harvest cycle.

Diagnosing Water Trough Overfilling

DIAGNOSING FREEZE CYCLE POTABLE WATER LEVEL CONTROL CIRCUITRY

Troubleshooting steps for water trough overfilling.

Troubleshooting Water Trough Overfilling (Continued)

Troubleshooting No Water in Sump Trough

Diagnosing Ice Machine Not Running

Self-Contained Wiring Diagrams (Continued)

Q0420/Q0450/Q0600/Q0800/Q1000 - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

Section 7 Refrigeration System

Sequence of Operation Overview

Overview of refrigeration sequences.

SELF-CONTAINED AIR OR WATER -COOLED MODELS Sequences

Refrigeration cycle for self-contained models.

Prechill Refrigeration Sequence

Details the prechill phase of the refrigeration cycle.

Freeze Cycle Refrigeration Sequence

Details the freeze phase of the refrigeration cycle.

Self-Contained Harvest Cycle

Harvest Cycle Refrigeration Sequence

Details the harvest phase of the refrigeration cycle.

Remote Model Refrigeration Sequences

REMOTE MODELS Overview

Refrigeration cycle for remote models.

Remote Pre-Chill Sequence

Prechill phase for remote models.

Remote Freeze Cycle Sequence

Freeze phase for remote models.

Remote Harvest Cycle

Remote Harvest Cycle Refrigeration Sequence

Harvest phase for remote models.

Remote Automatic Shut-Off

Automatic Shut-Off Explanation

Explanation of automatic shut-off for remote models.

Refrigeration Tubing Schematics

Q1300/Q1600/Q1800 SCHEMATICS

Refrigeration tubing schematics for specific models.

Remote Model Refrigeration Diagrams

Q1300/Q1600/Q1800 Remote Models Diagram

Diagram showing remote models' refrigeration path.

Operational Analysis (Diagnostics)

GENERAL Diagnostic Approach

Understanding component malfunctions and external factors.

Diagnostic Examples

Illustrations of similar symptoms leading to misdiagnosis.

Before Beginning Service and Ice Production Check

Questions Before Service

Key questions to ask before starting diagnostics.

ICE PRODUCTION CHECK Procedure

Procedure for checking ice production and relevant factors.

Installation and Water System Checklists

INSTALLATION/VISUAL INSPECTION CHECKLIST

Checklist for installation and visual inspection issues.

WATER SYSTEM CHECKLIST

Checklist for identifying and resolving water system problems.

Ice Formation Pattern Analysis

ICE FORMATION PATTERN

Analysis of ice formation patterns for diagnostics.

Normal Ice Formation

Description of normal ice formation on the evaporator.

Extremely Thin at Evaporator Outlet

Describes thin ice formation at the evaporator outlet.

Ice Formation Patterns (Continued)

Extremely Thin at Evaporator Inlet

Describes thin ice formation at the evaporator inlet.

Spotty Ice Formation

Describes uneven ice formation on the evaporator.

No Ice Formation

Describes the absence of ice formation on the evaporator.

Safety Limits

SAFETY LIMITS General

Details safety limits protecting the ice machine.

Safety Limit #1: Freeze Time Limit

Explains freeze time limit and its consequences.

Safety Limit #2: Harvest Time Limit

Explains harvest time limit and its consequences.

Safety Limit Indication

How safety limits are indicated on the control board.

Analyzing Safety Limit Stops

Analyzing Why Safety Limits Stop the Ice Machine

Explains how safety limits function and common causes.

Safety Limit #1 Troubleshooting

Possible Causes and Checks for Safety Limit #1

Lists possible causes and checks for Safety Limit #1.

Safety Limit #2 Troubleshooting

Possible Causes and Checks for Safety Limit #2

Lists possible causes and checks for Safety Limit #2.

Discharge Pressure Analysis

ANALYZING DISCHARGE PRESSURE DURING FREEZE OR HARVEST CYCLE

Procedure to analyze discharge pressure.

Freeze Cycle Discharge Pressure High Checklist

Checklist for high discharge pressure during freeze cycle.

Freeze Cycle Discharge Pressure Low Checklist

Checklist for low discharge pressure during freeze cycle.

Suction Pressure Analysis

ANALYZING SUCTION PRESSURE DURING FREEZE CYCLE

Procedure to analyze suction pressure drop.

Suction Pressure Checklists

Freeze Cycle Suction Pressure High Checklist

Checklist for high suction pressure during freeze cycle.

Freeze Cycle Suction Pressure Low Checklist

Checklist for low suction pressure during freeze cycle.

Evaporator Temperature Comparison

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

Procedure to compare evaporator temperatures for diagnostics.

Harvest Valve Temperature Check

HARVEST VALVE TEMPERATURE CHECK Procedure

Procedure to check harvest valve temperature.

Harvest Valve Analysis

Analyzing harvest valve symptoms using operational analysis.

Discharge Line Temperature Analysis

Using Refrigeration System Operational Analysis Tables

HOW TO USE THE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

Guide on using operational analysis tables for diagnostics.

General Usage of Analysis Tables

General advice on using operational analysis tables.

Analysis Table Procedure

Step-by-step guide for using the analysis tables.

Final Analysis Interpretation

Interpreting the results from the analysis tables.

Refrigeration System Operational Analysis Tables

Q, J and B Model Single Expansion Valve Analysis

Tables correlating operational data to refrigeration problems.

Q and J Model Dual Expansion Valve Analysis Tables

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

Remotes Only: GENERAL HPR System

Explanation of the HPR system components for remotes.

H.P.R. Solenoid Valve

Description of the HPR solenoid valve.

H.P.R. Valve Description

Description of the HPR pressure regulating valve.

HPR System Operation

FREEZE CYCLE HPR System Function

HPR system function during the freeze cycle.

HARVEST CYCLE HPR System Function

HPR system function during the harvest cycle.

HPR DIAGNOSTICS

HEADMASTER CONTROL VALVE

Headmaster Valve Operation

How the headmaster valve functions.

Diagnosing Headmaster Valve Issues

Steps to diagnose headmaster valve problems.

Low On Charge Verification

Pressure Control Specifications and Diagnostics

FAN CYCLE CONTROL Specs & Diagnostics

Function, specs, and check procedure for fan cycle control.

HIGH PRESSURE CUT-OUT (HPCO) CONTROL Specs & Diagnostics

Function, specs, and check procedure for HPCO control.

Refrigerant Pressure Charts

Q200 SERIES Operating Data

Cycle times, ice production, and pressures for Q200 models.

Operating Data Tables

Q200 SERIES Self-Contained Data

Operating data for Q200 self-contained models.

Operating Data Tables (Continued)

Q280 SERIES Self-Contained Data

Operating data for Q280 self-contained models.

Operating Data Tables (Continued)

Q320 SERIES Self-Contained Data

Operating data for Q320 self-contained models.

Operating Data Tables (Continued)

Q370 SERIES Self-Contained Data

Operating data for Q370 self-contained models.

Operating Data Tables (Continued)

Q420/450 SERIES Self-Contained Data

Operating data for Q420/450 self-contained models.

Operating Data Tables (Continued)

Q450 SERIES Remote Data

Operating data for Q450 remote models.

Q600 SERIES Self-Contained Air-Cooled Data

Operating data for Q600 self-contained air-cooled models.

Operating Data Tables (Continued)

Q600 SERIES Self-Contained Water-Cooled Data

Operating data for Q600 self-contained water-cooled models.

Q600 SERIES Remote Data

Operating data for Q600 remote models.

Operating Data Tables (Continued)

Q800 SERIES Self-Contained Air-Cooled Data

Operating data for Q800 self-contained air-cooled models.

Q800 SERIES Self-Contained Water-Cooled Data

Operating data for Q800 self-contained water-cooled models.

Operating Data Tables (Continued)

Q800 SERIES Remote Data

Operating data for Q800 remote models.

Q1000 SERIES Self-Contained Air-Cooled Data

Operating data for Q1000 self-contained air-cooled models.

Operating Data Tables (Continued)

Q1000 SERIES Self-Contained Water-Cooled Data

Operating data for Q1000 self-contained water-cooled models.

Q1000 SERIES Remote Data

Operating data for Q1000 remote models.

Operating Data Tables (Continued)

Q1300 SERIES Self-Contained Air-Cooled Data

Operating data for Q1300 self-contained air-cooled models.

Q1300 SERIES Self-Contained Water-Cooled Data

Operating data for Q1300 self-contained water-cooled models.

Operating Data Tables (Continued)

Q1300 SERIES Remote Data

Operating data for Q1300 remote models.

Q1600 SERIES Self-Contained Water-Cooled Data

Operating data for Q1600 self-contained water-cooled models.

Operating Data Tables (Continued)

Q1600 SERIES Remote Data

Operating data for Q1600 remote models.

Q1800 SERIES Self-Contained Air-Cooled Data

Operating data for Q1800 self-contained air-cooled models.

Refrigerant Recovery/Evacuation and Recharging

NORMAL SELF-CONTAINED MODEL PROCEDURES

Procedures for refrigerant handling in self-contained models.

Refrigerant Recovery/Evacuation Steps

Steps for recovering and evacuating refrigerant.

CONNECTIONS for Refrigerant Service

Required connections for refrigerant recovery/evacuation.

Self-Contained Charging Procedures

Remote Model Refrigerant Handling

NORMAL REMOTE MODEL PROCEDURES

Procedures for refrigerant handling in remote models.

Remote Refrigerant Recovery/Evacuation Steps

Steps for recovering and evacuating remote systems.

CONNECTIONS for Remote Refrigerant Service

Required connections for remote refrigerant handling.

Remote Charging Connections Diagram

Remote Charging Procedures

SYSTEM CONTAMINATION CLEAN-UP

Determining Severity Of Contamination

Methods to determine the level of system contamination.

System Contamination Cleanup Procedures

Mild System Contamination Cleanup

Steps for cleaning mild system contamination.

Severe System Contamination Cleanup

Steps for cleaning severe system contamination.

Replacing Pressure Controls Without Refrigerant Removal

Using Pinch-Off Tool

FILTER-DRIERS Information

Recommended O.E.M. Field Replacement Driers

List of recommended filter-drier part numbers.

TOTAL SYSTEM REFRIGERANT CHARGES

Table of refrigerant charges for various models.

Refrigerant Definitions

Recover, Recycle, Reclaim Definitions

Definitions of refrigerant handling terms.

New Product Specifications Reference

Reference to ARI Standard 700 for specifications.

Refrigerant Re-Use Policy

Manitowoc Approved Refrigerants

Approved types of refrigerants for use and re-use.

HFC REFRIGERANT Questions and Answers

Compressor Oil Requirements

Required compressor oil for HFC refrigerants.

POE Oil Characteristics

Characteristics of Polyol Ester (POE) oils.

POE Oil Procedural Implications

How POE oil characteristics affect service procedures.

HFC Refrigerant Servicing Q&A (Continued)

Special Procedures for Refrigerant Leaks

Special procedures if a POE system has a refrigerant leak.

HFC Refrigerant Leak Checking

Methods for leak-checking HFC refrigerant systems.

HFC Refrigerant Servicing Equipment

Required equipment for servicing HFC refrigerants.

Recovering HFC Refrigerants

Government regulations regarding HFC refrigerant recovery.

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