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AC-11 Air-Conditioning System Inspection On Refrigerant Quantity Inspection on Refrigerant Quantity 1. Run the engine at the speed of 1500 r/m or so (the atmospheric temperature should be above 35 ); 2. Start the air-conditioner in the max cold air status for several minutes; 3. Check the refrigerant quantity. Watch the observation window on liquid tank. Dr SF SL SK SY SJ liquid tank liquid tank observation window observation window No. 1 2 3 4 5 6 Symptoms Refrigerant quantity Repairing approaches Air bubble occurs in the observa- No air bubble in observation win- No temperature difference between Obvious temperature difference be- tween the inlet and outlet of compressor. Observation window is in clear status once the air-conditioner is turned off There is refrigerant foam on observa- tion window after the air-conditioner is turned off, then the observation window becomes clear. Insufficient No, normal or redundant No, or almost no Normal or redundant Redundant Normal Check to see whether there is leakage with the gas leakage detector Refers 3 and 4. Vacuumize the system and inflate the refrigerant, then check to see whether there is leakage with the gas leakage detector. Refer 5 and 6 Exhaust the redundant refrigerant until the speci- fied quantity is satisfied. |