Manitowoc UDE065A User Manual

Part Number 000014797 Rev02 05/18
Undercounter Ice Machines
Technician’s Handbook
This manual is updated as new information and models are
released. Visit our website for the latest manual.
www.manitowocice.com

Manitowoc UDE065A Specifications

General

Model	UDE065A
Type	Undercounter Ice Maker
Ice Type	Cube
Condenser Type	Air-Cooled
Water Connection	3/8" FPT
Ice Production	65 lbs/day
Power Supply	115V, 60Hz, 1Ph

Summary

Safety Notices

General Safety Precautions

Essential precautions for safe operation, installation, and maintenance.

Installation

Location of Ice Machine

Criteria for selecting an appropriate and safe installation site.

Electrical Requirements

Details on voltage, fuse/breaker, and ampacity for installation.

Water Service/Drains

Guidelines for connecting water supply and drain lines.

Maintenance

Interior Cleaning and Sanitizing

Procedure for cleaning and sanitizing the ice machine interior.

Cleaning the Condenser

Steps to clean the condenser for optimal performance.

Removal from Service/Winterization

Procedures for safely removing the ice machine from service.

Operation

Touch Pad Features

Explanation of the touch pad buttons and their functions for operation.

Ice Making Sequence of Operation

Detailed steps of the ice making cycle and control board revisions.

Troubleshooting

Troubleshooting U0140/UF0140/U0190/UF0190/U240/UF240/U310/UF310

Common problems and solutions for specific ice machine models.

Diagnosing an Ice Machine That Will Not Run

Steps to identify why the ice machine is not starting or operating.

Component Check Procedures

Main Fuse

Procedure to check the function and resistance of the main fuse.

Compressor Electrical Diagnostics

Steps to diagnose compressor electrical issues and winding resistance.

Float Switch

Procedure to check the function of ice thickness and harvest float switches.

Charts

Cycle Times, 24 Hr. Ice Production and Refrigerant Pressure Charts

Guidelines to verify correct ice machine operation and performance.

Diagrams

Wiring Diagrams

Electrical diagrams illustrating component connections and layout.

Electronic Control Boards

Diagrams and component identification for electronic control boards.

Tubing Schematics

Diagrams showing the refrigerant tubing layout for various models.

General Information

Model Numbers

Lists all supported ice machine models covered by the manual.

How to Read a Model Number

Ice Machine Warranty Information

Installation

Location of Ice Machine

Criteria for selecting an appropriate and safe installation site.

Electrical Requirements

Details on voltage, fuse/breaker, and ampacity for installation.

Water Service/Drains

Guidelines for connecting water supply and drain lines.

Maintenance

Interior Cleaning and Sanitizing

Procedure for cleaning and sanitizing the ice machine interior.

Cleaning and Sanitizing Procedure U140, U190, U240, U310

Specific cleaning and sanitizing steps for certain models.

PREVENTATIVE MAINTENANCE CLEANING

Ice Machine Inspection

Exterior Cleaning

Instructions for cleaning the external surfaces of the ice machine.

CLEANING THE CONDENSER

REMOVAL FROM SERVICE/WINTERIZATION

Self-contained Air-cooled ice machines

Procedures for winterizing air-cooled ice machines.

Water-cooled ice machines

Procedures for winterizing water-cooled ice machines.

BIN REMOVAL

Cleaning and Sanitizing Procedure UDE065

Cleaning and Sanitizing Procedure UDE080

Ice Making Sequence of Operation

CONTROL BOARD REVISIONS

Information on changes and updates to control board versions.

SOFTWARE REVISIONS

Details on software versions and their functional changes.

SEQUENCE OF OPERATION

Initial Start-up From Shutoff

Steps for initial machine startup after being shut off.

Freeze Cycle

Explanation of the freeze cycle process.

Harvest Cycle

Explanation of the harvest cycle process.

SAFETY LIMITS

Safety Limit 1

Conditions causing safety limit 1 shutdown and indicator lights.

Safety Limit 2

Conditions causing safety limit 2 shutdown and indicator lights.

Safety Limit 3

Operational Checks

ICE THICKNESS CHECK

Procedure to inspect and verify ice cube thickness.

ICE THICKNESS ADJUSTMENT

Steps to adjust the ice thickness control dial.

Sequence of Operation UDE065

Initial startup or startup after automatic shut-off

Steps for initial machine startup after being shut off.

Refrigeration System Start-up

Steps for starting the refrigeration system.

Freeze Cycle

Explanation of the freeze cycle process.

Sequence of Operation UDE080

Initial start-up or start-up after automatic shut-off

Steps for initial machine startup after being shut off.

Freeze

Explanation of the freeze cycle process.

Operational Checks UDE080

SIPHON SYSTEM

Explanation of the siphon system's function and maintenance.

WATER LEVEL

How to check and verify the correct water level.

WATER LEVEL CHECK

ICE THICKNESS CHECK

Troubleshooting U0140/UF0140/U0190/UF0190/U240/UF240/U310/UF310

PROBLEM CHECKLIST

A systematic list of common ice machine problems and their causes.

CONTROL BOARD TEST MODE

OPERATING ICE MACHINE WITH BIN AND TOUCH PAD REMOVED

DIAGNOSING AN ICE MACHINE THAT WILL NOT RUN

ICE MACHINE DOES NOT CYCLE INTO HARVEST WHEN WATER LOSES CONTACT WITH THE HARVEST FLOAT SWITCH

Freeze Time Lock-In Feature

Explanation of the feature preventing short cycling.

ICE PRODUCTION CHECK

INSTALLATION/VISUAL INSPECTION CHECKLIST

WATER SYSTEM CHECKLIST

ICE FORMATION PATTERN

SAFETY LIMIT FEATURE

Safety Limit 1

Conditions causing safety limit 1 shutdown and indicator lights.

Safety Limit 2

Conditions causing safety limit 2 shutdown and indicator lights.

Safety Limit 3

Determining Which Safety Limit Stopped the Ice Machine

Safety Limit Notes

Important notes regarding safety limit storage and indication.

Safety Limit Checklist

Safety Limit #1

Checklist for diagnosing safety limit #1 causes.

Safety Limit #2

ANALYZING DISCHARGE PRESSURE

Discharge Pressure High Checklist

Checklist for diagnosing high discharge pressure.

Freeze Cycle Discharge Pressure Low Checklist

Checklist for diagnosing low discharge pressure.

ANALYZING SUCTION PRESSURE

Suction Pressure High Checklist

Checklist for diagnosing high suction pressure.

Suction Pressure Low Checklist

Checklist for diagnosing low suction pressure.

HARVEST VALVE

Normal Operation

Explanation of the harvest valve's function and normal operation.

Harvest Valve Analysis

COMPARING EVAPORATOR INLET/OUTLET TEMPERATURES

DISCHARGE LINE TEMPERATURE ANALYSIS

REFRIGERATION COMPONENT DIAGNOSTICS

Final Analysis

Interpreting diagnostic results to identify refrigeration problems.

Troubleshooting UDE065

DIAGNOSING AN ICE MACHINE THAT WILL NOT RUN

Steps to diagnose why the UDE065 ice machine will not run.

REFRIGERATION DIAGNOSTICS OVERVIEW UDE065

Normal Operation

Expected temperature ranges for normal operation of UDE065.

Abnormal temperatures

UDE065 Refrigeration Diagnostics

Analysis

Interpreting diagnostic data for UDE065 refrigeration system.

FLOODING EXPANSION VALVE SYMPTOMS

Symptoms indicating a flooding expansion valve issue.

STARVING EXPANSION VALVE/LOW REFRIGERANT CHARGE SYMPTOMS

Symptoms indicating low refrigerant or starving expansion valve.

ANALYZING ICE FORMATION PATTERN

ANALYZING DISCHARGE LINE TEMPERATURE

Discharge Line Temperature High Checklist

Checklist for diagnosing high discharge line temperature.

Freeze Cycle Discharge Temperature Low Checklist

Checklist for diagnosing low discharge temperature.

ANALYZING SUCTION LINE TEMPERATURE

Suction Temperature High Checklist

Checklist for diagnosing high suction line temperature.

Suction Temperature Low Checklist

Checklist for diagnosing low suction line temperature.

COMPARING EVAPORATOR INLET/OUTLET TEMPERATURES

DISCHARGE LINE TEMPERATURE ANALYSIS

HARVEST VALVE

Normal Operation

Explanation of the harvest valve's function and normal operation.

Harvest Valve Analysis

Troubleshooting UDE080

DIAGNOSING AN ICE MACHINE THAT WILL NOT RUN

Steps to diagnose why the UDE080 ice machine will not run.

SAFETY LIMIT FEATURE

Safety Limit #1

Conditions causing safety limit #1 shutdown and indicator lights.

Safety Limit #2

Conditions causing safety limit #2 shutdown and indicator lights.

Determining Which Safety Limit Stopped the Ice Machine

Safety Limit Notes

Important notes regarding safety limit storage and indication.

Safety Limit Checklist

Safety Limit #1

Checklist for diagnosing safety limit #1 causes.

Safety Limit #2

DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY

Ice Machine Cycles Into Harvest Before Water Contact with the Ice Thickness Probe

ICE PRODUCTION CHECK

INSTALLATION/VISUAL INSPECTION CHECKLIST

WATER SYSTEM CHECKLIST

UDE080 Refrigeration Diagnostics

Analysis

Interpreting diagnostic data for UDE080 refrigeration system.

FLOODING EXPANSION VALVE SYMPTOMS

Symptoms indicating a flooding expansion valve issue.

STARVING EXPANSION VALVE/LOW REFRIGERANT CHARGE SYMPTOMS

Symptoms indicating low refrigerant or starving expansion valve.

ANALYZING ICE FORMATION PATTERN

ANALYZING DISCHARGE LINE TEMPERATURE

Discharge Line Temperature High Checklist

Checklist for diagnosing high discharge line temperature.

Freeze Cycle Discharge Temperature Low Checklist

Checklist for diagnosing low discharge temperature.

ANALYZING SUCTION LINE TEMPERATURE

Suction Temperature High Checklist

Checklist for diagnosing high suction line temperature.

Suction Temperature Low Checklist

Checklist for diagnosing low suction line temperature.

COMPARING EVAPORATOR INLET/OUTLET TEMPERATURES

DISCHARGE LINE TEMPERATURE ANALYSIS

HARVEST VALVE

Normal Operation

Explanation of the harvest valve's function and normal operation.

Harvest Valve Analysis

Component Check Procedures

MAIN FUSE

Procedure to check the function and resistance of the main fuse.

BIN SWITCH

TOUCH PAD

Check For Normal Operation

Steps to verify normal operation of the touch pad interface.

Ohm Test

FLOAT SWITCH

Check Procedure

How to check the function of float switches.

Ice Thickness Float Switch

WATER TROUGH THERMISTOR

Check procedure

Procedure to check thermistor resistance and temperature readings.

BIN THERMOSTAT

Check Procedure

Steps to check bin thermostat resistance and operation.

LIQUID LINE THERMISTOR

Check Procedure

Procedure to check liquid line thermistor resistance and temperature.

ON/OFF/WASH TOGGLE SWITCH

CHECK PROCEDURE

How to inspect and test the ON/OFF/WASH toggle switch.

COMPRESSOR ELECTRICAL DIAGNOSTICS

Check Resistance (Ohm) Values

Measuring resistance of compressor windings for diagnostics.

Check Motor Windings to Ground

Testing compressor motor windings for ground faults.

Compressor Drawing Locked Rotor

Compressor Drawing High Amps

FAN CYCLE CONTROL

Check Procedure

Steps to check the fan cycle control's operation and pressure settings.

HIGH PRESSURE CUTOUT (HPCO) CONTROL

Check Procedure

Steps to check the HPCO control's cut-out pressure.

Filter-Driers

Liquid Line Filter Drier

Information on the function and importance of the liquid line filter drier.

Refrigerant Recovery/Evacuation

DEFINITIONS

Definitions related to refrigerant recovery, recycling, and reclaiming.

REFRIGERANT RE-USE POLICY

RECOVERY AND RECHARGING PROCEDURES U0140/UF0140/U0190/UF0190/U240/UF240/U310/UF310

CONNECTIONS

Connection points for refrigerant recovery and recharging.

SELF-CONTAINED RECOVERY/EVACUATION

CHARGING PROCEDURES

Critical steps for charging refrigerant accurately.

RECOVERY AND RECHARGING PROCEDURES UDE065/UDE080

CONNECTIONS

Connection points for refrigerant recovery and recharging.

System Contamination Cleanup

DETERMINING SEVERITY OF CONTAMINATION

Methods to determine the level of contamination in the system.

MILD SYSTEM CONTAMINATION CLEANUP PROCEDURE

SEVERE SYSTEM CONTAMINATION CLEANUP PROCEDURE

REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGE

Total System Refrigerant Charge

Charts

Cycle Times, 24 Hr. Ice Production and Refrigerant Pressure Charts

Guidelines to verify correct ice machine operation and performance.

UDE065 OPERATING TEMPERATURES

Cycle Times

Expected cycle times for UDE065 under various conditions.

24 Hour Ice Production

Expected ice production rates for UDE065 under various conditions.

UDE080 SELF-CONTAINED AIR-COOLED

Cycle Times

Expected cycle times for UDE080 under various conditions.

24 Hour Ice Production

Expected ice production rates for UDE080 under various conditions.

Operating Temperatures

Normal operating temperature ranges for UDE080 models.

U0140/UF0140 SELF-CONTAINED AIR-COOLED

Cycle Times

Expected cycle times for U0140/UF0140 models.

24 Hour Ice Production

Expected ice production rates for U0140/UF0140 models.

Operating Pressures

Normal operating pressures for U0140/UF0140 models.

U0140 SELF-CONTAINED WATER-COOLED

Cycle Times

Expected cycle times for U0140 water-cooled models.

24 Hour Ice Production

Expected ice production rates for U0140 water-cooled models.

Operating Pressures

Normal operating pressures for U0140 water-cooled models.

U0190/UF0190 SELF-CONTAINED AIR-COOLED

Cycle Times

Expected cycle times for U0190/UF0190 models.

24 Hour Ice Production

Expected ice production rates for U0190/UF0190 models.

Operating Pressures

Normal operating pressures for U0190/UF0190 models.

U0240/UF0240 SELF-CONTAINED AIR-COOLED

Cycle Times

Expected cycle times for U0240/UF0240 models.

24 Hour Ice Production

Expected ice production rates for U0240/UF0240 models.

Operating Pressures

Normal operating pressures for U0240/UF0240 models.

U0240/UF0240 SELF-CONTAINED WATER-COOLED

Cycle Times

Expected cycle times for U0240/UF0240 water-cooled models.

24 Hour Ice Production

Expected ice production rates for U0240/UF0240 water-cooled models.

Operating Pressures

Normal operating pressures for U0240/UF0240 water-cooled models.

U0310/UF0310 SELF-CONTAINED AIR-COOLED

Cycle Times

Expected cycle times for U0310/UF0310 models.

24 Hour Ice Production

Expected ice production rates for U0310/UF0310 models.

Operating Pressures

Normal operating pressures for U0310/UF0310 models.

U0310/UF0310 SELF-CONTAINED WATER-COOLED

Cycle Times

Expected cycle times for U0310/UF0310 water-cooled models.

24 Hour Ice Production

Expected ice production rates for U0310/UF0310 water-cooled models.

Operating Pressures

Normal operating pressures for U0310/UF0310 water-cooled models.

Diagrams

Wiring Diagrams

Electrical diagrams illustrating component connections and layout.

Electronic Control Boards

Diagrams and component identification for electronic control boards.

Tubing Schematics

Diagrams showing the refrigerant tubing layout for various models.

UDE065 WIRING DIAGRAM

UDE080 WIRING DIAGRAM

UF0140/UF0240 WIRING DIAGRAM 1PH AIR/WATER

U0140/U0190/U0240 WIRING DIAGRAM WITH J4 THERMISTOR TERMINAL - 1PH AIR/WATER

U0140/U0190/U0240 WIRING DIAGRAM PRIOR TO THERMISTOR TERMINAL - 1PH AIR/WATER

UF0310 WIRING DIAGRAM 1PH AIR/WATER

U0310 WIRING DIAGRAM WITH J4 THERMISTOR TERMINAL - 1PH AIR/WATER

U0310 WIRING DIAGRAM PRIOR TO THERMISTOR TERMINAL - 1PH AIR/WATER

Electronic Control Boards

ELECTRONIC CONTROL BOARD UF MODELS

Diagram and component list for UF model control boards.

ELECTRONIC CONTROL BOARD U MODELS WITH J4 THERMISTOR TERMINAL

Diagram and component list for U models with J4 thermistor.

ELECTRONIC CONTROL BOARD U MODELS PRIOR TO THERMISTOR TERMINAL

Diagram and component list for U models prior to thermistor terminal.

ELECTRONIC CONTROL BOARD UDE065

Diagram and component list for UDE065 control board.

ELECTRONIC CONTROL BOARD UDE080

Diagram and component list for UDE080 control board.

Tubing Schematics

TUBING SCHEMATIC - UDE065

Schematic illustrating the tubing layout for UDE065 models.

TUBING SCHEMATIC - UDE080/U0140/UF0140

Schematic for UDE080/U0140/UF0140 tubing layout.

TUBING SCHEMATIC - U0190/UF0190/U0240/UF0240/U0310/UF0310

Schematic for U0190/UF0190/U0240/UF0240/U0310/UF0310 tubing layout.