Westinghouse WHU09DHA21S Service Manual page 23

Checking components
Check refrigerant system
TEST SYSTEM FLOW
Conditions: ① Compressor is running.
② The air condition should be installed in good ventilation.
Tool: Pressure Gauge
Technique: ① see ② feel ③ test
See ----- Tube defrost.
Feel ----- The difference between tube's temperature.
Test ----- Test pressure.
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