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. |
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| 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). |
|
Refrigerant R134a is currently available under the following
trade designations:
H-FKW 134a
SUVA 134a
...
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:
Controls for the heating and fresh air system
Fig. 183 In the centre console: controls
for the heating and fresh air system
First read and observe the introductory information
and safety warnings
Button, control
Additional information. Heating and fresh air system
Temperature ...
Vehicle settings menu
First read and observe the introductory information
and safety warnings
Opening the Vehicle settings menu
Switch on the ignition.
If necessary, switch on the infotainment system.
Press the
infotainment
button.
Touch the function button
to open ...
Cavity sealing, overview of body
Cavity sealing, bottom view of body
Note
The indicated areas have been treated with cavity sealant and must
be resealed following repairs.
Cavity sealing, side view of body
Illustration ...
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Trade names and designations
Effects on metal