Compressor HVAC: Testing and Inspection

Climate Control System

Component Tests

A/C Compressor - External Leak Test

1. Install the A/C Pressure Test Adapter on the rear head of the A/C compressor, using the existing retaining bolts.

2. Connect the high- and low-pressure lines of a manifold gauge set or a refrigerant recovery/recycling station such as the R-134a A/C Service Center to the corresponding fittings on the A/C Pressure Test Adapter.

3. Attach the center hose of the manifold gauge set to a refrigerant container standing in an upright position.

4. Hand-rotate the compressor shaft 10 complete revolutions to distribute the oil inside the A/C compressor.

5. Open the low-pressure gauge valve, the high-pressure gauge valve and the valve on the refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.

6. Using the Automatic Calibration Halogen Leak Detector, check the entire A/C compressor for leaks.

7. If an external leak is found, install a new A/C compressor.

8. When the leak test is complete, recover the refrigerant from the compressor.