A/C System, Operating After Charging

NOTE:

If A/C compressor was removed, it must be cranked by hand at ribbed belt pulley/freewheel approximately 10 rotations before bringing into operation for the first time. This prevents damage in the A/C compressor due to liquid when switching the A/C system on. If there is oil in the A/C compressor cylinder, it will be forced out.

-- Start engine with compressor switched off (version with A/C clutch).

Fig 1: Identifying A/C Service Station

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Set compressor to minimum output, for example, "Econ" or A/C off mode (version with no A/C clutch with regulating valve).

-- Wait until idle speed has stabilized.

-- Switch on compressor and operate system for at least 2 minutes at idling speed.

-- If necessary, check pressures in refrigerant circuit using A/C service station.

-- Turn engine off.

-- Screw out handwheel on quick-release coupling adapter.

-- Disconnect charging hose from refrigerant circuit.

-- Screw protective caps back on.