RS1500000 Rev. 2
14
Component Testing
To avoid risk electrical shock, personal injury, or death,
always disconnect electrical power source to the freezer
before attempting to service, unless test procedures require
power to be connected. When removing any wiring from terminals they must be replaced on the same terminals.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING
!
Refrigeration System Test Procedures
Careful testing of the refrigeration system is essential in determining if a malfunction is present.
Temperature testing is accomplished by using a three lead thermocouple temperature tester in specific locations.
1. Test point 1, is attached to inlet on the evaporator coil
2. Test point 2, is attached to outlet on the evaporator coil.
3. Test point 3, is approximately 68 inches from suction port of compressor on the suction line.
4. Thermocouple tips should be attached securely to the locations specified.
5. Do not test during initial pull down, Allow one complete OFF cycle or a balanced temperature condition to
occur before proceeding.
6. Unit must operate a minimum of 20 minutes after thermocouples are installed.
NOTE:
It may be necessary to turn control colder to maintain required operating time.
7. Wattage reading must be recorded with temperature test to confirm proper operation.
8. Suction and Head pressures are listed in the specification chart.
Condenser
Evaporator
Heat
exchanger
Drier
Suction
line
Discharge
line
Compressor
Refrigerant Flow Diagram
Automatic Defrost
Condenser
Evaporator
Heat
exchanger
Dryer
Suction
line
Discharge
line
Compressor
Refrigerant Flow Diagram
Manual Defrost
