Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

Refrigerant circuit
Página 7 de 11
- Switch off service station.
Note:
- If the compressor has been removed, rotate it about 10
times by hand at ribbed belt pulley / freewheel prior to initial
start-up to prevent damage caused by liquid impact when
first switched on (any oil in compressor cylinder is forced
out on rotation).
- Start engine with compressor switched off (version with
A/C clutch).
- Set compressor to minimum output, i.e. "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
service station.
- Turn engine off.
- Screw out handwheel on quick-release coupling adapter.
- Disconnect charging hoses from refrigerant circuit.
- Screw protective caps back on.
Refrigerant, transferring to charging
cylinder of service station
- The work procedure is always to be performed as
described in the operating instructions for the A/C service
station.
- A certain quantity of refrigerant is specified as charge for
each air conditioning system. To ensure that neither too
much nor too little refrigerant is added (either would reduce
the cooling output), the charging cylinder has a scale
indicating the weight.
Service station, draining
Note:
- If it is necessary to drain the service station (e.g. due to
extraction of contaminated refrigerant), all filters and dryers
must always be replaced (do not remove filter and dryer
from the air-tight packaging until immediately before
installation to minimize moisture absorption).
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13/2/2005