Name: Manitowoc UG020A
Brand: Manitowoc
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position. Remove water curtain, ice chute, water sump

over flow tube. Drain water from sump and replace tub

Step 18 Replace all parts.

Step 19 Place toggle switch to ON position,ice

machine will go into ice making cycle.

Default Chapter7
- Table of Contents7
Table of Contents11
General Information11
Model Numbers11
Installation13
Location of Ice Machine13
- Water Service/Drains14
- Electrical Requirements15
- Electrical Specifications16
- Power Consumption - Kwh Per 24 Hours17
- Ice Machine Heat of Rejection18
Component Identification19
- Component Removal21
- Spray Bar25
Maintenance27
- Cleaning & Sanitizing Procedure28
Operation33
Sequence of Operation33
- Harvest Cycle34
- Ice Cube Thickness Check35
- Cube Shape37
Troubleshooting39
All Models39
- Ice Machine will Not Run39
- Compressor Won't Run40
- Compressor Electrical Diagnostics41
- Diagnosing Start Components43
- Water Pump Won't Run44
- Hot Gas Valve Won't Energize44
- Water Inlet Valve Won't Energize44
- Ice Machine Prematurely Harvests45
- Ce Machine will Not Harvest46
- Evaporator Thermostat47
Water System Checklist54
Ice Production Check55
Analyzing Discharge Pressure56
- Discharge Pressure High Checklist57
- Freeze Cycle Discharge Pressure Low Checklist58
Analyzing Suction Pressure59
- Suction Pressure High Checklist61
- Suction Pressure Low Checklist62
Discharge Line Temperature Analysis63
Component Check Procedures65
- On/Off/Wash-Fill Toggle Switch65
- Bin Thermistor (T3)66
- SUMP WATER Thermistor (T1)& LIQUID LINE Thermistor(T2)68
- High Pressure Cutout (HPCO) Control75
- Hot Gas Valve76
Refrigerant81
- Recover/Evacuation/Charging81
- System Contamination Cleanup84
- Mild System Contamination Cleanup86
- Severe System Contamination Cleanup Procedure87
- Filter-Driers89
- Total System Refrigeration Charge90
Cycle Times/24 Hour Ice Production and Refrigerant Pressure Charts91
- Cube92
- Ug18A Self-Contained Air-Cooled - Standard Cube (Continued)93
- Ug18A Self-Contained Air-Cooled - Standard Cube (Continued)94
  - Cube95
- UG020A Self-Contained Air-Cooled - Standard Cube (Continued)96
- UG020A Self-Contained Air-Cooled - Standard Cube (Continued)97
- Ug030A-251 Self-Contained Air-Cooled - Standard Cube98
- Ug030A-251 Self-Contained Air-Cooled - Standard Cube99
- UG030A-251 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)100
- Dard Cube (Continued)100
- Ug030A-261 Self-Contained Air-Cooled - Standard Cube101
- Ug030A-261 Self-Contained Air-Cooled - Standard Cube102
  - Dard Cube (Continued)103
- Ug030A-161 Self-Contained Air-Cooled - Standard Cube104
- Ug030A-161 Self-Contained Air-Cooled - Standard Cube105
- UG030A-161 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)106
- Dard Cube (Continued)106
- UG030W Self-Contained WATER--Cooled107
  - Standard Cube107
- UG030W Self-Contained WATER--Cooled108
  - Standard Cube108
- UG030W Self-Contained WATER--Cooled109
  - Standard Cube (Continued)109
  - Ug040A-251 Self-Contained Air-Cooled - Standard Cube110
  - UG040A-251 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)111
  - Dard Cube (Continued)111
  - UG040A-251 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)112
  - Dard Cube (Continued)112
- Ug040A-261 Self-Contained Air-Cooled - Standard Cube113
- UG040A-261 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)114
- Dard Cube (Continued)114
- UG040A-261 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)115
  - Dard Cube (Continued)115
  - Ug050A-251 Self-Contained Air-Cooled - Standard Cube116
  - Dard Cube (Continued)117
  - UG050A-251 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)117
- UG050A-251 SELF-CONTAINED AIR-COOLED - STANDARD CUBE (Continued)118
- Dard Cube (Continued)118
- UG050W Self-Contained Water-Cooled119
- UG050W Self-Contained Water-Cooled120
- UG050W Self-Contained Water-Cooled121
- UG065AG-251G Self-Contained Air-Cooled - Standard Cube122
- UG065 Self-Contained Air-Cooled - Standard Cube (Continued)123
- UG065 Self-Contained Air-Cooled - Standard Cube (Continued)124
- UG080A Self-Contained Air-Cooled - Standard Cube125
- UG080A Self-Contained Air-Cooled - Standard Cube (Continued)126
  - Cube (Continued)127
Diagrams129
Wiring Diagram129
- UG18/UG20 Air-Cooled129
- UG30/UG50/UG65 Air-Cooled130
- UG30/UG50 Water-Cooled132
Tubing Schematics133
- Ug18/Ug20/Ug30/Ug40/Ug65 Tubing Schematic133
- UG50/UG80 Tubing Schematic134

Manitowoc UG020A Technician's Handbook

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Brand	Manitowoc
Model	UG020A
Category	Ice Maker
Language	English