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
 
106  Part Number: 000015430 Rev 02 5/20
Ice Production Check
The amount of ice a machine produces directly relates 
to the operating water and air temperatures. This means 
a condensing unit with a 70°F (21°C) outdoor ambient 
temperature and 50°F (10°C) water produces more ice 
than the same model condensing unit with a 90°F (32°C) 
outdoor ambient temperature and 70°F (21°C) water.
1.  Determine the ice machine operating conditions: 
Air temp entering condenser:____° 
Water temp entering sump trough:____°
2.  Refer to the appropriate 24-Hour Ice Production Chart 
(starting on page 201). Use the operating conditions 
determined in step 1 to find published 24-Hour Ice 
Production:_____
•  Times are in minutes. 
Example: 1 min. 15 sec. converts to 1.25 min. 
(15 seconds ÷ 60 seconds = .25 minutes)
•  Weights are in pounds. 
Example: 2 lb. 6 oz. converts to 2.375 lb. 
(6 oz. ÷ 16 oz. = .375 lb.)
3.  Perform an ice production check using the formula 
below.
1. + =
Freeze 
Time
Harvest Time Total Cycle 
Time
2. 1440 ÷ =
Minutes in 
24 Hrs.
Total Cycle 
Time
Cycles per Day
3. x =
Weight 
of One 
Harvest
Cycles per 
Day
Actual 24-Hour 
Production
Weighing the ice is the only 100% accurate check. 










