Service Manual
Table Of Contents
- General Information
- Model Numbers
- Installation
- Maintenance
- Sequence of Operation
- Troubleshooting
- Component Specifications
- Charts
- Diagrams
- Wiring Diagrams
- Flake Models
- Nugget Models
- Condensing Units
- Compressor Start Component Wiring
- Refrigeration Tubing Schematics
- UFF0200/UFF0350/UNF0200/UNF0300
- RFF0320/RNF0320 Air-cooled
- RFF0620/RNF0620/RNF1100 Air & Water-cooled
- RNF1020C QuietQube Head Section & RCUF1000 Condensing Unit
- RFF1220C & RCUF1000 Condensing Unit
- RNF2000C QuietQube Head Section & RCUF2200 Condensing Unit
- RFF2200C QuietQube Head Section & RCUF2200 Condensing Unit
- RFF1300 Air & Water-cooled
- RFF2500 Air-cooled
Part Number 000015433_03 5/20 79
Replace Relay
Line Voltage To
Compressor
Contactor Coil?
YES
Low Pressure
Control Closed?
Line Voltage At
Liquid Line Solenoid
Valve?
NO
NO
YES
Verify:
Refrigerant Pressure is Higher Than LPCO Cut-
in Both Shut-off Valves are Open Repair/
Replace Liquid Line Solenoid Locate and Repair
Refrigerant Leak
Replace LPCO Switch
YES
High Pressure
Control Closed?
Resets?
Replace HPCO
Clean Condenser, Check
Fan Motor Check Fan
Cycle Control
Refrigerant Pressure
Above Cut-out?
Resets
&
Trips
NO NO
YES
NO
NO
Clean Condenser,
Check Fan Motor,
Check Fan Cycle Control &
Refrigeration System
YES
YES
Repair Wiring