Volkswagen Golf Service & Repair Manual: Refrigerant circuit with restrictor and reservoir
| Arrows show the direction of refrigerant flow. |
| A- low-pressure side of the refrigerant circuit. |
| B- high-pressure side of the refrigerant circuit. |
|
Component |
Overall
state of the refrigerant |
Pressure (in bar) |
Temperature
in degrees Celsius |
| -1-
Air conditioning system compressor B-side |
Gas |
up to 20 bar |
to +70°C |
| -2-
Condenser |
from gas through vapour
to liquid |
up to 20 bar |
to +70°C |
| -3-
Restrictor |
from liquid to vapour |
B-side up to 20 bar,
A-side greater than 1.5 bar |
B-side up to +60°C, A-side
warmer than -4°C |
| -4-
Evaporator |
from vapour to gas |
greater than 1.5 bar |
warmer than -4°C |
| -5-
Reservoir |
Gas |
|
|
| -6-
Air conditioning system compressor A-side |
Gas |
|
|
| The pressures on the A-side are held at approx. 2 bar by the
“regulating” air conditioner compressor even at differing engine speeds.
This applies however only within the rated range of the air conditioner
compressor ; if the rated range of the air conditioner compressor is
exceeded, the pressure will increase
→ Chapter. |
Note
| In vehicles with air conditioner compressor regulating valve -N280-,
the pressure on the low-pressure side is varied by activating the valve. |
A- low-pressure side of the refrigerant circuit.
B- high-pressure side of the refrigerant circuit.
...
Displays on the pressure gauge
1 -
Temperature scale for refrigerant R134a CF3–CH2F or
CH2F–CF3.
2 -& ...
Other materials:
Overview of fitting locations - telephone system
1 -
Telephone microphone -R38-
In front interior light -W1-.
Removing and installing
→ Chapter
2 -
Control unit 1 for information electronics -J794-
In glove compartment.
...
Functional description of remote control for auxiliary and supplementary
heater
Note
The auxiliary and supplementary heater can be switched on
and off from a distance of several 100 metres (open space) using
the remote control. This range is restricted in built-up areas
or from buildings.
...
Rodent proofing
First read and observe the introductory information
and safety warnings Rodent proofing equipment is made up of special brushes
and casings and impedes entry to the engine compartment by rodents when the bonnet
is shut. This prevents damage caused to components by rodent bites.
NOTICE
If ...
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Refrigerant circuit with expansion valve
Test and measurement work that can be performed using a pressure gauge