icetro WU-0100A

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ICE MAKING

SEQUENCE OF

OPERATION

Control Board Relays

Length of

TimeWater Pump Hot Gas Valve Compressor

Condenser

Fan Motor

Automatic

Shut-off

6. Auto Shut-off

Off Off Off Off

Until bin switch

re-closes

Main Page

Table of Contents9
General Information15
Model Numbers15
How to Read a Model Number16
How to Read a Serial Number17
Ice Cube Sizes18
Model/Serial Number Location18
Installation19
Location of Ice Machine19
Ice Machine Clearance Requirements20
Ice Machine Heat of Rejection20
Leveling the Ice Machine21
Electrical Requirements22
Electrical Specifications22
Water Service/Drains23
Water Supply23
Water Inlet Line23
Drain Connections24
Water Supply & Drain Line Sizing/Connections25
Maintenance26
Interior Cleaning & Sanitizing26
Detailed Cleaning & Sanitizing Procedure IC/IU-0170 & IC/IU-022026
Remedial Cleaning27
Cleaning the Condenser37
Removal from Service/Winterization38
Bin Removal39
Detailed Descaling and Sanitizing Procedure WU-010041
Cleaning the Condenser52
Removal from Service/Winterization53
Sequence of Operation54
IC/Iu-0170 & IC/Iu-022054
Main Power Switch54
Sequence of Operation56
Error Codes62
Troubleshooting Error Codes64
Operational Checks66
Ice Thickness Check66
Ice Thickness Adjustment66
Minimum/Maximum Slab Weight68
Sequence of Operation WU-010069
WU-0100 Energized Parts Chart71
Operational Checks WU-010073
Siphon System73
Water Level73
Water Level Check74
Ice Thickness Check75
Troubleshooting76
Troubleshooting IC/IU-0170 & IC/IU-022076
Control Board (IC/IU-0170 & IC/IU-0220)78
Diagnosing an Ice Machine that will Not Run81
Ice Machine Does Not Cycle into Harvest When82
The Harvest Float Is Down/Closed82
Ice Machine Does Not Cycle into Harvest When83
Water Touches Ice Thickness Probe83
Ice Machine Cycles into Harvest before the Harvest Float Is Down/Closed84
Ice Production Check86
Installation/Visual Inspection Checklist88
Water System Checklist88
Ice Formation Pattern90
Analyzing Discharge Pressure92
Analyzing Suction Pressure94
Hot Gas Valve97
Discharge Line Temperature Analysis101
Final Analysis103
Troubleshooting WU-0100104
Diagnosing an Ice Machine that will Not Run104
Error Codes105
Error Code Checklist106
Diagnosing Ice Thickness Control Circuitry109
Ice Production Check111
Installation/Visual Inspection Checklist113
Water System Checklist114
WU-0100 Refrigeration Diagnostics116
Analyzing Discharge Line Temperature117
Analyzing Suction Line Temperature118
Hot Gas Valve120
Component Check Procedures124
Main Fuse124
Bin Switch All Models125
Float Switch127
IC/Iu-0170 & IC/Iu-0220127
Water Trough Thermistor129
IC/Iu-0170 & IC/Iu-0220129
ICE/OFF/WASH Toggle Switch All Models130
Compressor Electrical Diagnostics131
High Pressure Cutout (HPCO) Control133
IC/Iu-0170 & IC/Iu-0220133
Filter-Driers134
Refrigerant Recovery/Evacuation135
Refrigerant Re-Use Policy136
Recovery and Recharging Procedures138
IC/U-0170 & IC/Iu-0220138
Recovery and Recharging Procedures WU-0100141
System Contamination Cleanup143
Mild System Contamination Cleanup145
Severe System Contamination Cleanup146
Replacing Pressure Controls Without Removing Refrigerant Charge148
Total System Refrigerant Charge149
Cycle Times, 24 Hr. Ice Production and Refrigerant Pressure Charts150
IC/ID-0170 & IC/ID-0220152
Wiring Diagrams153
WU-0100 Wiring Diagram154
IU-0170 & IU-0220 Wiring Diagram155
Printed Circuit Boards (PCB) WU-0100 PCB156
IC/IU-0170 & IC/IU-0220 PCB (Floats)157
IU-0170 & IU-0220 PCB (Ice Thickness Probe)158
Tubing Schematics159
Tubing Schematic - WU-0100159
Tubing Schematic160
IC/Iu-0170 & IC/Iu-0220160

icetro WU-0100A - Page 72

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