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Manitowoc Manuals
Ice Maker
MY0500A
Technician's handbook
Manitowoc MY0500A Technician's Handbook
M series
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Safety Notices
Table of Contents
General Information
Model Numbers
How to Read a Model Number
Ice Machine Warranty Information
Commercial Warranty Coverage
Residential Warranty Coverage
Installation
Location of Ice Machine
Ice Machine Clearance Requirements
Clearance Requirements
Ice Machine Heat of Rejection
Leveling the Ice Machine
Electrical Requirements
Water Service/Drains
Water Supply
Water Inlet Lines
Drain Connections
Cooling Tower Applications
Maintenance
Interior Cleaning and Sanitizing
General
Cleaning and Sanitizing Procedure
Toggle Switch Operation
Remove Parts for Cleaning
Preventative Maintenance Cleaning
Ice Machine Inspection
Cleaning the Condenser
Removal from Service/Winterization
Air-Cooled Models
Water-Cooled Models
Ice Making Sequence of Operation
Control Board Timers
Safety Limits
Energized Parts Chart
Operational Checks
Ice Thickness Check
Troubleshooting
Control Board Test Mode
Diagnosing an Ice Machine that will Not Run
Ice Machine Does Not Cycle into Harvest When Water Loses Contact with the Harvest Float Switch
Ice Machine Cycles into Harvest before Water Loses Contact with the Harvest Float Switch
Ice Production Check
Installation/Visual Inspection Checklist
Water System Checklist
Ice Formation Pattern
Safety Limits
Analyzing Discharge Pressure
Analyzing Suction Pressure
Harvest Valve
Comparing Evaporator Inlet/Outlet Temperatures
Discharge Line Temperature Analysis
Refrigeration Component Diagnostics
Final Analysis
Refrigeration Component Diagnostic Chart
Component Check Procedures
Main Fuse
Bin Switch
Float Switch
Compressor Electrical Diagnostics
Fan Cycle Control
High Pressure Cutout (HPCO) Control
Refrigeration Components
Head Pressure Control Valve
Harvest Cycle Operation
Harvest Pressure Regulating (HPR) System Remote Condenser Only
Water Regulating Valve
Refrigerant Recovery/Evacuation
Definitions
Refrigerant Re-Use Policy
Recovery and Recharging Procedures
System Contamination Cleanup
Determining Severity of Contamination
Mild System Contamination Cleanup Procedure
Severe System Contamination Cleanup Procedure
Replacing Pressure Controls Without Removing Refrigerant Charge
Refrigerant Amount
Cycle Times, 24 Hr. Ice Production and Refrigerant Pressure Charts
M0420A Self-Contained Air-Cooled
M0500A Self-Contained Air-Cooled
M0500W Self-Contained Water-Cooled
M0700A Self-Contained Air-Cooled
M0700W Self-Contained Water-Cooled
M1000A Self-Contained Air-Cooled
M1000W Self-Contained Water-Cooled
M1400A Self-Contained Air-Cooled
Wiring Diagrams
Wiring Diagram Legend
M0420,M0500, M0700, M1000 1 PH Self- Contained Air/Water-Cooled
Electronic Control Board
Refrigeration Tubing Schematics
Self-Contained Air or Water-Cooled
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Ice Thickness Check
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Manitowoc
M series
Ice Machines
Technician's
Handbook
This manual is updated as new information and models are
released. Visit our website for the latest manual. www.welbilt.cn
Part Number 040005626 5/17
Table of
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Summarization of Contents
Safety and Procedural Notices
Understanding Safety Symbols
Explanation of Warning and Caution symbols used for safety.
Key Pre-Operation Guidelines
Essential warnings for installation, maintenance, and operation.
General Information and Warranty
Model Identification and Reading
Identifying model numbers and understanding their structure.
Warranty Terms and Service
Details on commercial and residential warranty coverage and obtaining service.
Installation Requirements
Site Selection and Clearances
Criteria for choosing a location and required clearances for installation.
Electrical and Water Specifications
Electrical requirements, water supply, and drain connection guidelines.
Operation and Maintenance Procedures
Ice Making Cycle Breakdown
Step-by-step explanation of the ice making process (freeze, harvest).
Interior Cleaning and Sanitizing
Routine procedures for cleaning and sanitizing internal components.
Condenser Care and Winterization
Instructions for cleaning the condenser and preparing for storage.
Troubleshooting Common Issues
Diagnosing Start-Up Problems
Steps to identify why the ice machine is not starting or running.
Harvest Cycle Troubleshooting
Resolving issues related to the ice machine not cycling into harvest.
Pressure and Temperature Analysis
Analyzing system pressures and temperatures for diagnostics.
Component Diagnostics
Switch and Fuse Checks
Procedures for testing fuses, bin switches, and float switches.
Compressor and Control Checks
Diagnosing compressor electrical issues and control board functions.
Valve and Pressure Control Checks
Testing high pressure cutouts, head pressure control valves, and water regulating valves.
Refrigerant and System Care
Refrigerant Recovery and Charging
Safe procedures for recovering, evacuating, and recharging refrigerant.
System Contamination Cleanup
Assessing and cleaning contaminated refrigeration systems.
Replacing Controls Without Charge Loss
Procedure for replacing components while retaining refrigerant charge.
Performance Data and Diagrams
Cycle Time and Ice Production Charts
Reference charts for cycle times and ice production rates by model.
Operating Pressure Reference
Data tables for expected operating pressures under various conditions.
Wiring and Tubing Schematics
Electrical wiring diagrams and refrigeration tubing schematics.
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