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Manitowoc QY1394N User Manual

Manitowoc QY1394N
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Maintenance Section 3
3-16 Part No. 80-1100-3
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Table of Contents

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Manitowoc QY1394N Specifications

General IconGeneral
BrandManitowoc
ModelQY1394N
CategoryIce Maker
LanguageEnglish

Summary

Safety Notices

Warning: Personal Injury Potential

Alerts to potential personal injury from improper equipment use.

Warning

Alerts to potential personal injury situations.

Caution

Alerts to situations that could damage the ice machine.

Procedural Notices

Important

Provides helpful procedural information for efficiency.

Note

Provides useful extra information about procedures.

Section 1 General Information

Model Numbers

Covers the specific ice machine models discussed in the manual.

How to Read a Model Number

Explains how to decode the ice machine model numbers.

Ice Cube Sizes

Details the dimensions of the available ice cube types.

Model/Serial Number Location

Shows where to find the model and serial number decals.

Warranty Coverage

Outlines warranty terms, parts, labor, and exclusions.

Section 2 Installation Instructions

General

Refers to complete installation guidelines for the unit.

Ice Machine Dimensions

Provides physical dimensions for various ice machine models.

Ice Storage Bin Dimensions

Details the physical dimensions for ice storage bins.

Remote Condenser Dimensions

Lists the physical dimensions for remote condensers.

Location of Ice Machine

Criteria for selecting an appropriate installation location.

Stacking Two Ice Machines on a Single Storage Bin

Instructions for safely stacking two ice machines.

Ice Machine Heat of Rejection

Provides BTU/hr values for heat rejection for sizing.

Leveling the Ice Storage Bin

Steps to ensure the ice storage bin is properly leveled.

Air-Cooled Baffle

Instructions for installing the air baffle.

Electrical Service

General information on electrical requirements and connections.

Self-Contained Electrical Wiring Connections

Wiring diagrams for self-contained ice machine models.

Remote Electrical Wiring Connections

Wiring diagrams for remote ice machine models.

Water Supply and Drain Requirements

Guidelines for proper water supply and drain connections.

Cooling Tower Applications

Details for water-cooled models using cooling towers.

WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS

Specifies line sizes and connections for water/drain.

Remote Condenser/Line Set Installation

Guidelines for installing remote condensers and line sets.

REMOTE ICE MACHINES REFRIGERANT CHARGE

Information on refrigerant charge for remote models.

GENERAL

General notes on condenser mounting.

GUIDELINES FOR ROUTING LINE SETS

Best practices for routing refrigerant lines for performance.

CALCULATING REMOTE CONDENSER INSTALLATION DISTANCES

Method to calculate line set distances for proper installation.

LENGTHENING OR REDUCING LINE SET LENGTHS

Procedures for adjusting line set lengths.

CONNECTING A LINE SET

Steps for connecting refrigerant line sets.

REMOTE RECEIVER SERVICE VALVE

Instructions for opening the receiver service valve.

Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers

Guidelines for using third-party condensers with Manitowoc machines.

Installation Check List

A checklist to ensure proper installation procedures were followed.

Additional Checks for Remote Models

Specific checks required for remote ice machine installations.

Section 3 Maintenance

Component Identification

Identifies key components of the ice machine.

Operational Checks

Procedures for checking machine operation and performance.

ICE THICKNESS CHECK

How to check and adjust the ice thickness probe.

HARVEST SEQUENCE WATER PURGE

Adjustment for water purge timing in the harvest cycle.

Cleaning the Condenser

Instructions for cleaning the ice machine condenser.

AIR-COOLED CONDENSER

Specific steps for cleaning air-cooled condensers.

WATER-COOLED CONDENSER AND WATER REGULATING VALVE

Cleaning procedures for water-cooled condensers.

Interior Cleaning and Sanitizing

General procedures for cleaning and sanitizing the interior.

MANITOWOC’S PATENTED CLEANING OR SANITIZING TECHNOLOGY

Details on the automatic cleaning system technology.

AlphaSan

Information on the AlphaSan additive for plastic surfaces.

CLEANING PROCEDURE

Step-by-step guide for cleaning the ice machine.

SANITIZING PROCEDURE

Step-by-step guide for sanitizing the ice machine.

AUTOMATIC CLEANING SYSTEM (AuCS)

Details and operation of the AuCS accessory.

REMOVAL OF PARTS FOR CLEANING/SANITIZING

Instructions for removing parts for cleaning or sanitizing.

Water Dump Valve

Procedures for removing and cleaning the water dump valve.

Water Pump

Procedures for removing and cleaning the water pump.

Ice Thickness Probe

Procedures for removing and cleaning the ice thickness probe.

Water Level Probe

Procedures for removing and cleaning the water level probe.

Water Inlet Valve

Procedures for cleaning the water inlet valve.

Water Distribution Tube

Procedures for removing and cleaning the water distribution tube.

Water Curtain

Procedures for removing and cleaning the water curtain.

Water Treatment/Filtration

Information on water treatment systems and filter replacement.

Removal from Service/Winterization

Procedures for winterizing the ice machine.

Section 4 Ice Machine Sequence of Operation

Self-Contained Air- and Water-Cooled

Operation sequences for self-contained models.

HARVEST SEQUENCE

Details of the ice machine harvest cycle.

AUTOMATIC SHUT-OFF

Conditions and procedures for automatic ice machine shutdown.

Remote

Operation sequences for remote ice machine models.

HARVEST SEQUENCE

Details of the remote ice machine harvest cycle.

AUTOMATIC SHUT-OFF

Conditions for remote ice machine automatic shutdown.

Section 5 Water System Ice Making Sequence of Operation

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

Initial operation sequence after startup or shutdown.

FREEZE CYCLE

Details of the water system freeze cycle operation.

HARVEST CYCLE

Details of the water system harvest cycle operation.

AUTOMATIC SHUT-OFF

Conditions for automatic shutdown of the water system.

Section 6 Electrical System

Energized Parts Charts

Charts showing energized components during operation cycles.

Wiring Diagram Sequence of Operation

Explains operational sequences using wiring diagrams.

SELF-CONTAINED MODELS

Wiring diagrams specific to self-contained models.

2. REFRIGERATION SYSTEM START-UP

Details the start-up sequence of the refrigeration system.

Freeze Sequence 3. PRE-CHILL

Details the pre-chill phase of the freeze sequence.

4. FREEZE

Details the freeze phase of the ice making cycle.

Harvest Sequence 5. WATER PURGE

Details the water purge within the harvest sequence.

6. HARVEST

Details the harvest phase of the ice making cycle.

7. AUTOMATIC SHUT-OFF

Details the automatic shut-off sequence.

REMOTE MODELS Initial Start-Up Or Start-Up After Automatic Shut-Off 1. WATER PURGE

Initial sequence for remote models, including water purge.

2. REFRIGERATION SYSTEM START-UP

Start-up sequence for remote refrigeration systems.

Freeze Sequence 3. PRE-CHILL

Pre-chill phase for remote models' freeze sequence.

4. FREEZE

Freeze phase for remote models' ice making cycle.

Harvest Sequence 5. WATER PURGE

Water purge phase for remote models' harvest sequence.

6. HARVEST

Harvest phase for remote models' ice making cycle.

7. AUTOMATIC SHUT-OFF

Automatic shut-off for remote models.

Wiring Diagrams

General introduction to the electrical wiring diagrams.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

Q320 - SELF CONTAINED - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific remote models.

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

Wiring diagram for specific remote models.

Q800/Q1000 - REMOTE - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Q800/Q1000 - REMOTE - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Q1300/Q1800 - REMOTE - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Q1300/Q1600/Q1800 - REMOTE - 1 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Q1300/Q1800 - REMOTE - 3 PHASE WITH TERMINAL BOARD

Wiring diagram for specific remote models.

Q1300/Q1600/Q1800 - REMOTE - 3 PHASE WITHOUT TERMINAL BOARD

Wiring diagram for specific remote models.

Component Specifications and Diagnostics

Specifications and diagnostic procedures for components.

MAIN FUSE

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

BIN SWITCH

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

Check Procedure

Procedures for checking the bin switch operation.

Water Curtain Removal Notes

Important notes regarding water curtain removal.

COMPRESSOR ELECTRICAL DIAGNOSTICS

Troubleshooting compressor electrical issues.

PTCR DIAGNOSTICS

Information and troubleshooting for PTCR components.

Q-Model Automatic Shut-Off and Restart

How shut-off and restart functions relate to PTCRs.

Troubleshooting PTCR’s

Common issues and causes of PTCR failure.

CHECKING THE PTCR

Procedure for checking PTCR resistance and condition.

ICE/OFF/CLEAN TOGGLE SWITCH

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

CONTROL BOARD RELAYS

Information regarding control board relays and their functions.

ELECTRONIC CONTROL BOARD

Diagram and description of the electronic control board.

General

General information about control board operation.

Safety Limits

Information on built-in safety limits protecting components.

Inputs

How inputs affect the control board's operation.

Ice Thickness Probe (Harvest Initiation)

Explanation of how the ice thickness probe functions.

HARVEST/SAFETY LIMIT LIGHT

Function and indication of the harvest/safety limit light.

FREEZE TIME LOCK-IN FEATURE

Explanation of the freeze time lock-in feature.

MAXIMUM FREEZE TIME

Information on the maximum freeze time safety limit.

ICE THICKNESS CHECK

How to check and adjust the ice thickness.

Ice Thickness Probe Cleaning

Procedure for cleaning the ice thickness probe.

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY

Steps for diagnosing the ice thickness control circuit.

Water Level Control Circuitry

Information on the water level control system.

DIAGNOSING FREEZE CYCLE POTABLE WATER LEVEL CONTROL CIRCUITRY

Troubleshooting water level control in the freeze cycle.

Problem: Water Trough Overfilling During The Freeze Cycle (continued)

Troubleshooting steps for an overfilling water trough.

Problem: Water Will Not Run Into The Sump Trough During The Freeze Cycle

Troubleshooting steps for no water entering the sump trough.

Diagnosing An Ice Machine That Will Not Run

Troubleshooting steps for an ice machine that fails to run.

Q0420/Q0450/Q0600/Q800/Q1000 - SELF CONTAINED - 1 PHASE WITH TERMINAL BOARD

Wiring diagram for specific self-contained models.

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

Wiring diagram for specific self-contained models.

Section 7 Refrigeration System

Sequence of Operation

General overview of the refrigeration system's operational sequences.

SELF-CONTAINED AIR OR WATER -COOLED MODELS

Refrigeration sequences for self-contained models.

REMOTE MODELS

Refrigeration sequences for remote ice machine models.

Q1300/Q1600/Q1800 REFRIGERATION TUBING SCHEMATICS

Tubing schematics for Q1300/Q1600/Q1800 models.

Operational Analysis (Diagnostics)

General guide to analyzing refrigeration system issues.

BEFORE BEGINNING SERVICE

Questions to ask before starting refrigeration diagnostics.

ICE PRODUCTION CHECK

Procedure to check and measure ice production.

INSTALLATION/VISUAL INSPECTION CHECKLIST

Checklist for installation and visual inspection issues.

WATER SYSTEM CHECKLIST

Checklist for identifying and resolving water system issues.

ICE FORMATION PATTERN

Analysis of evaporator ice formation for diagnostics.

Extremely Thin at Evaporator Inlet

Ice formation pattern analysis for thin ice at evaporator inlet.

Spotty Ice Formation

Ice formation pattern analysis for spotty ice coverage.

No Ice Formation

Ice formation pattern analysis for absence of ice.

SAFETY LIMITS

Explanation of built-in safety limit controls.

Analyzing Why Safety Limits May Stop the Ice Machine

Explains how safety limits function to protect components.

Safety Limit #1

Details and troubleshooting for Safety Limit #1.

Safety Limit #2

Details and troubleshooting for Safety Limit #2.

ANALYZING DISCHARGE PRESSURE DURING FREEZE OR HARVEST CYCLE

Procedure for analyzing discharge pressure.

ANALYZING SUCTION PRESSURE DURING FREEZE CYCLE

Procedure for analyzing suction pressure.

Freeze Cycle Suction Pressure High Checklist

Checklist for diagnosing high suction pressure.

Freeze Cycle Suction Pressure Low Checklist

Checklist for diagnosing low suction pressure.

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

Procedure for comparing evaporator inlet/outlet temperatures.

HARVEST VALVE TEMPERATURE CHECK

Procedure for checking harvest valve temperature.

DISCHARGE LINE TEMPERATURE ANALYSIS

Analysis of discharge line temperature.

HOW TO USE THE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

Instructions on using the operational analysis tables.

REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES

Operational analysis table for diagnosing refrigeration problems.

Q and J Model Dual Expansion Valve

Analysis table for dual expansion valve models.

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

Explanation of the Harvest Pressure Regulating system.

FREEZE CYCLE

How the HPR system functions during the freeze cycle.

HARVEST CYCLE

How the HPR system functions during the harvest cycle.

HPR DIAGNOSTICS

Steps for diagnosing the HPR system.

HEADMASTER CONTROL VALVE

Explanation and operation of the headmaster control valve.

LOW ON CHARGE VERIFICATION

Procedure to verify if the ice machine is low on refrigerant charge.

FAN CYCLE CONTROL VS. HEADMASTER

Comparison of fan cycle control and headmaster functions.

Pressure Control Specifications and Diagnostics

Specifications and diagnostic procedures for pressure controls.

FAN CYCLE CONTROL

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

HIGH PRESSURE CUT-OUT (HPCO) CONTROL

Function, specifications, and check procedure for HPCO control.

Q280 SERIES

Operational data charts for Q280 Series models.

Q320 SERIES

Operational data charts for Q320 Series models.

Q370 SERIES

Operational data charts for Q370 Series models.

Q420/450 SERIES

Operational data charts for Q420/450 Series models.

Q450 SERIES Remote

Operational data charts for Q450 Remote models.

Q600 SERIES Self-Contained Air-Cooled

Operational data charts for Q600 Self-Contained Air-Cooled models.

Q600 SERIES Self-Contained Water-Cooled

Operational data charts for Q600 Self-Contained Water-Cooled models.

Q600 SERIES Remote

Operational data charts for Q600 Remote models.

Q800 SERIES Self-Contained Air-Cooled

Operational data charts for Q800 Self-Contained Air-Cooled models.

Q800 SERIES Self-Contained Water-Cooled

Operational data charts for Q800 Self-Contained Water-Cooled models.

Q1000 SERIES Self-Contained Water-Cooled

Operational data charts for Q1000 Self-Contained Water-Cooled models.

Q1000 SERIES Remote

Operational data charts for Q1000 Remote models.

Q1300 SERIES Self-Contained Air-Cooled

Operational data charts for Q1300 Self-Contained Air-Cooled models.

Q1300 SERIES Self-Contained Water-Cooled

Operational data charts for Q1300 Self-Contained Water-Cooled models.

Q1600 SERIES Remote

Operational data charts for Q1600 Remote models.

Q1800 SERIES Self-Contained Air-Cooled

Operational data charts for Q1800 Self-Contained Air-Cooled models.

Q1800 SERIES Self-Contained Water-Cooled

Operational data charts for Q1800 Self-Contained Water-Cooled models.

Q1800 SERIES Remote

Operational data charts for Q1800 Remote models.

Q1300 SERIES Remote

Operational data charts for Q1300 Remote models.

Q1600 SERIES Self-Contained Water-Cooled

Operational data charts for Q1600 Self-Contained Water-Cooled models.

Refrigerant Recovery/Evacuation and Recharging

Procedures for refrigerant recovery, evacuation, and recharging.

NORMAL SELF-CONTAINED MODEL PROCEDURES

Procedures for refrigerant handling on self-contained models.

Self-Contained Charging Procedures

Procedures for charging self-contained ice machines.

NORMAL REMOTE MODEL PROCEDURES

Procedures for refrigerant handling on remote models.

Refrigerant Recovery/Evacuation

Procedures for recovering refrigerant from remote systems.

Remote Charging Procedures

Procedures for charging remote ice machines.

SYSTEM CONTAMINATION CLEAN-UP

Basic requirements for restoring contaminated systems.

Determining Severity Of Contamination

How to determine the severity of system contamination.

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 for replacing controls without removing refrigerant.

FILTER-DRIERS

Information on filter-driers and recommended replacement parts.

TOTAL SYSTEM REFRIGERANT CHARGES

Table of refrigerant charges for various ice machine models.

REFRIGERANT DEFINITIONS

Definitions of refrigerant recover, recycle, and reclaim.

REFRIGERANT RE-USE POLICY

Manitowoc's policy on refrigerant re-use.

HFC REFRIGERANT QUESTIONS AND ANSWERS

Frequently asked questions about HFC refrigerants.

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