Service Manual
Table Of Contents
- Safety Notices
- Definitions
- General Information
- Installation
- Maintenance
- Operation
- Troubleshooting
- Troubleshooting
- Troubleshooting By Symptom
- Reset To Factory Defaults
- Symptom #1 - Ice Machine Will Not Run
- #2 - Low Production, Long Freeze Cycle
- Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
- Symptom #3 & #4 - Harvest Problems Self‑contained Air, Water & Remote Condenser Models
- Symptom #3 - Self-Contained Air or Water-cooled
- Symptom #3 - Remote Condenser
- Symptom #4 - Self-Contained Air, Water-Cooled or Remote
- Component Check Procedures
- Electrical Components
- Control Board, Display And Touchscreen
- Control Board Relay Test
- Programming A Replacement Control Board
- USB Flash Drive Specifications and Formatting
- Exporting Data to a Flash Drive
- Upgrading Firmware with a Flash Drive
- Main Fuse
- Bin Switch
- Water Level Control Circuitry
- Ice Thickness Probe (Initiates Harvest)
- Bin Level Probe
- Thermistors
- High Pressure Cutout (HPCO) Control
- Fan Cycle Control
- Harvest Assist Air Pump
- Compressor Electrical Diagnostics
- Diagnosing Start Components
- Refrigeration Components
- Refrigerant Recovery/Evacuation
- System Contamination Clean-Up
- Liquid Line Filter-Driers
- Replacing Pressure Controls Without Removing Refrigerant Charge
- Total System Refrigerant Charge
- Electrical Components
- Charts
- Diagrams
- Wiring Diagrams
- Wiring Diagram Legend
- IF0300/IT0420/IT0450/IT0500/IT0620/IT0750 1ph Air/Water
- IT0500/IT1200 - 1ph Remote Air-Cooled
- IF0600/IF0900/IT0900/IT1200 - 1ph Air/Water
- IF0600/IF0900/IT0900/IT1200 - 3ph Air/Water
- IT1500/IT1900 - 1ph Air/Water
- IT1500/IT1900 - 3 ph Air/Water
- IF0500/IF0600/IF0900/IT1200/IF1500 - 1ph Remote
- IF0500/IF0600/IF0900/IT1200/IF1500 - 3ph Remote Condenser
- Electronic Control Board
- Refrigeration Tubing Schematics
- Wiring Diagrams
70 Part Number: 000015430 Rev 02 5/20
ENERGIZED PARTS CHART SELF CONTAINED AIR OR WATER-COOLED MODELS
Ice Making Sequence
of Operation
Water
Pump
Harvest
Valve(s)
Air
Pump(s)*
Water Inlet
Valve
Water
Dump
Valve
Contactor
Coil
Compressor
Condenser
Fan Motor
Length of Time
Initial Start-Up
1. Water Purge
On Off Off Off On Off Off Off
45 Seconds
2. Pressure Equalization
Off On On Off Off Off Off Off
5 Seconds
3. Compressor Startup Off On On Off Off On On Off 5 Seconds
Freeze Sequence
4. Prechill
Off Off Off
May Cycle
On/Off
Off On On
May Cycle
On/Off
Initial Start-Up
is 120 Seconds
30 Seconds
thereafter
5. Freeze
On Off Off
Cycle On/
Off
Off On On
May Cycle
On/Off
Until Ice
Contact w/
Ice Thickness
Probe
Harvest Sequence
6. Water Purge
On On On Off Off On On
May Cycle
On/Off
Factory Set at
45 Seconds
7. Harvest
Off On On Off Off On On
May Cycle
On/Off
Bin Switch
Activation