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). |
|
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:
Assembly overview - long noise insulation
Note
The removal and installation procedures may have to be modified
slightly depending on engine fitted.
1 -
Short noise insulation
Removing
–
Remove bolts -2-,
-3- and -4-.
–
Pull out ...
Winter tyres
M+S symbol
On an “M and S tyre” the tread profile, tread composition or
construction are designed so that the handling characteristics
are improved on snow as compared with a normal tyre - especially
when pulling away or stabilisatio ...
Removing and installing fuse holder, battery
Removing
–
With ignition switched off, disconnect earth cable from
battery
→ Chapter.
–
Open cover -1-.
–
...
© 2016-2024 Copyright www.vwgolf.org