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
Part Number: 000015430 Rev 02 5/20 73
4. Freeze
Water Pump
The water pump(s) energizes and water flows over the
evaporator. The water pump is energized throughout the
freeze cycle.
Water Inlet Valve
The water inlet valve energized in prechill. After water
contacts the low and high water probes the water fill valve
de-energizes. Ice builds on the evaporator and the water
level drops. When water loses contact with the high water
probe, the water fill valve energizes until water contacts
the high water probe again.
Maximum Fill Time = Prechill fill time + first fill + second fill.
SINGLE EVAPORATOR MAXIMUM FILL TIME
Initial startup or startup after automatic shutoff
Prechill (2 minutes) + first fill time (6 minutes) + second fill
time (6 minutes) = 14.0 minutes.
Consecutive cycles
Prechill (30 sec.) + first fill time (6 minutes) + second fill
time (6 minutes) = 12.5 minutes.
DUAL EVAPORATOR MAXIMUM FILL TIMES
Initial startup or startup after automatic shutoff
Prechill (2 minutes) + first fill time (8 minutes) + second fill
time (8 minutes) = 18.0 minutes.
Consecutive cycles
Prechill (30 sec.) + first fill time (8 minutes) + second fill
time (8 minutes) = 16.5 minutes.