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Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 1

General Information 1

Model Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Installation 3

Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . 3

Water Service/Drains . . . . . . . . . . . . . . . . . . . . . . 4

Electrical Requirements . . . . . . . . . . . . . . . . . . . . 5

Electrical Specifications . . . . . . . . . . . . . . . . . . . . 6

Power Consumption - kwh per 24 hours . . . . . . . 7

Ice Machine Heat of Rejection . . . . . . . . . . . . . . . 8

Component Identification 9

Component Removal . . . . . . . . . . . . . . . . . . . . . 11

Spray Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Maintenance 17

Cleaning & Sanitizing Procedure . . . . . . . . . . . . 18

Operation 23

Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 23

Cube Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Troubleshooting 29

All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Ice Machine Will Not Run. . . . . . . . . . . . . . . . . . 29

Compressor Won’t Run . . . . . . . . . . . . . . . . . . . 30

Compressor Electrical Diagnostics. . . . . . . . . . . 31

Diagnosing Start Components . . . . . . . . . . . . . . 33

Water Pump Won’t Run . . . . . . . . . . . . . . . . . . . 34

Hot Gas Valve Won’t Energize. . . . . . . . . . . . . . 34

Water Inlet Valve Won’t Energize. . . . . . . . . . . . 34

Ice Machine Prematurely Harvests . . . . . . . . . . 35

ce Machine Will Not Harvest . . . . . . . . . . . . . . . 36

Evaporator Thermostat. . . . . . . . . . . . . . . . . . . . 37

Water System Checklist . . . . . . . . . . . . . . . . . . . . 44

Ice Production Check . . . . . . . . . . . . . . . . . . . . . . 45

Analyzing Discharge Pressure . . . . . . . . . . . . . . 46

Discharge Pressure High Checklist . . . . . . . . . . 47

Freeze Cycle Discharge Pressure Low Checklist 48

Analyzing Suction Pressure. . . . . . . . . . . . . . . . . 49

Suction Pressure High Checklist . . . . . . . . . . . . 51

Manitowoc UG020A Technician's Handbook

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