VW Golf manuals

Volkswagen Golf Service & Repair Manual: Vapour pressure

In an enclosed container that is not completely full, refrigerant evaporates as vapour at the surface in a quantity sufficient to form an equilibrium between vapour and liquid. This equilibrium develops under pressure and is often called vapour pressure. The vapour pressure is temperature-dependant → Chapter.
   
Physical properties of R134a
Because the vapour pressure curves of R134a and other refrigerants are in part very similar, unique identification on the basis of pressure alone is not possible.
The air conditioner compressor used for R134a is lubricated with special synthetic refrigerator oils, such as PAG oils (polyalkylene glycol oils).
Trade names and designations
Refrigerant R134a is currently available under the following trade designations: H-FKW 134a SUVA 134a ...

Effects on metal
In its pure state, refrigerant R134a is chemically stable and does not attack iron or aluminium. However, impurities such as chlorine compounds in th ...

Other materials:

Securing child seats using lower anchoring points (ISOFIX, LATCH)
Fig. 78 On vehicle seat: different markings identifying the lower anchoring points for child seats Fig. 79 On the vehicle seat: protective caps for the inner anchoring point First read and observe the introductory information and safety warnings Two retaining rings, also known as lower ...

Headlight washer system
–  To loosen the connection, push the lock ring -1--arrow- and pull off the hose connection. –  To secure the connection, push and hold the lock ring -arrow- and push on the hose connection. Check that the s ...

Assembly overview - park assist steering, RHD vehicles
1 -  Rear park assist steering senders Rear left park assist steering sender -G716- Rear right park assist steering sender -G717- Removing and installing → Chapter 2 -  Park assist s ...

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