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
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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). |
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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:
Releasing gas from gas strut
Clamp gas strut in vice in area x = 50 mm.
WARNING
Wear protective goggles when sawing.
Cover area of saw cut with a cloth.
Dispose ...
Function of air quality sensor -G238-
The air quality sensor detects noxious substances in the
ambient air (primarily petrol and/or diesel fumes).
The Climatronic control unit -J255- evaluates the signal
from the air quality sensor -G238-. The air conditioning system
i ...
Wheel bolts, versions
Explanations regarding types of convex seats
There are two different versions of convex tapered seats,
the spherical seat and the tapered.
The spherical seat is the curved surface of a s ...
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