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2.1.14 High-pressure safety valve
The high-pressure safety valve is fitted to the air conditioner com‐
pressor or the receiver.
The valve opens at a pressure above approx. 38 bar and closes
again when the pressure has dropped (approx. 30 bar).
Not all the refrigerant is lost from the system.
Depending on the version, a transparent plastic disc may be fitted,
which breaks when the valve opens.
2.2 Design of refrigerant circuit
2.2.1 Refrigerant circuit with expansion valve
and evaporator
1 - Evaporator
2 - Expansion valve
3 - Valve for extracting, charging and measuring
4 - Receiver with dryer bag or dryer cartridge
5 - Condenser
6 - Air conditioner compressor
Note
Arrows show the direction of refrigerant flow.
2.2.2 Refrigerant circuit with restrictor and
reservoir
1 - Air conditioner compressor
2 - Condenser
3 - Restrictor
4 - Evaporator
5 - Reservoir with dryer cartridge
Note
Arrows show the direction of refrigerant flow.
2.3 Evacuation and charging valves for
quick-release couplings of air condition‐
er service station on refrigerant circuit
Special tools and workshop equipment required
♦ Torque wrench - V.A.G 1783- (2…10 Nm) with 1/4" ratchet
adapter - VAS 6234-
Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
2. General information on refrigerant circuit 25
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