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:
Warning lamp
Fig. 57 Warning lamp in the instrument
cluster
Fig. 58 Seat belt status for the rear seats
in the instrument cluster
First read and observe the introductory information
and safety warnings
Lights up or flashes
Possible cause
Solution
...
Removing and installing Valeo heat exchanger, RHD vehicles
Special tools and workshop equipment
required
Drip tray for workshop hoist -VAS 6208-
Hose clamps up to 25 mm -3094-
...
Assembly overview - wheel housing trim, saloon
Note
The illustration shows the wheel housing trim on the left side.
The right-hand side is similar (mirror image of left-hand side).
I: Vehicles without side padding
II: Vehicles with side padding
1 -
Wheel housing tri ...
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Refrigerant circuit with expansion valve
Test and measurement work that can be performed using a pressure gauge