Audi A3 1997 Manual page 206

Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
13 Cap
◆ With seal, must always be fitted.
14 Service connection
◆ Low-pressure end
◆ For measuring and draining with service station.
Warning!
The service connections may be removed only if the refrigerant circuit is empty - the connection is not supplied
with a valve.
15 Pre-volume
◆ Installed in the refrigerant line from the expansion valve to the compressor.
◆ Pressure shocks that could arise on the low-pressure end when the compressor is running are reduced
in the pre-volumes.
200
87 - Air conditioning
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