Discharging Refrigerant Circuit Using Service Station - I

Discharging Refrigerant Circuit Using Service Station

- Work procedure may vary depending on the type of tools selected (the tool-specific operating instructions should therefore be followed).
- The refrigerant circuit is to be discharged if parts of the refrigerant circuit are to be removed, if there is any doubt about the quantity of refrigerant in the circuit or if safety precautions so require.
- All the necessary usage information for working with the refrigerant service station can be found in the service station operating instructions.

Draining:
- Switch off ignition.
- Connect A/C service station in line with operating instructions to vehicle service connections and start up service station.

NOTE:
- There is a possibility of refrigerant oil being extracted from the refrigerant circuit together with the refrigerant. To ensure compressor lubrication, the refrigerant oil in the circuit must be topped up with fresh oil.
- On vehicles fitted with a compressor with no A/C clutch (with A/C Compressor Regulator Valve N280) the engine should not be run for longer than absolutely necessary with the refrigerant circuit empty and refrigerant circuit closed (compressor always in operation as well). Engine speed must not exceed 2500 RPM.
- On vehicles equipped with an A/C compressor with A/C clutch, the engine must be started since the A/C Pressure Switch F129 or High Pressure Sensor G65 (checks whether refrigerant is present in the circuit) switches off the A/C clutch as soon as there is no refrigerant in the refrigerant circuit.