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TM5-4120-376-14
5-19. REFRIGERANT VALVES AND RELATED TUBING/Test, Repair, Replace (Cont)
L O C A T I O N / I T E M
PRESSURE REGULATING VALVE
Test:
Install gauges and operate unit in cooling mode. Turn thermostat (Temperature Selector
Switch) to warmer. Check that the liquid line solenoid (L-1) is closed. The unit will stop
cooling but continue to operate. Watch the suction gauge. If the compressor pulls the suction
pressure down to the factory setting (35 psig +/- 5 psig) the valve is operating normally. If the
pressure falls below this value, the valve is defective and must be replaced. The pressure
regulator valve is factory set and can not be adjusted or repaired.
SOLENOID VALVE (L-1) (L-2)
Repair:
1. Tag and unsolder wires from electrical connector P-8 (10).
2. Remove adapter from coil (13).
3. Replace defective coil (13) and install adapter.
4. Solder wires on new coil (13) to electrical connector P-8 (10) in accordance with Appendix
E and remove tags.
5-39
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