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:
Assembly overview - brake pedal, LHD vehicles
The brake pedal travel must not be restricted by additional
floor coverings.
Note
Do not lubricate or grease the pivot pin. The pivot pin must
remain dry.
1 -
S ...
Safety precautions for working on vehicles with start-stop system
Risk of injury due to unexpected engine start
In vehicles with activated Start/Stop system, the engine may start
up unexpectedly. The status of the Start/Stop system is indicated by a
message in the dash panel insert.
–
Deactivate Start/Stop syste ...
Air recirculation mode
First read and observe the introductory information
and safety warnings General notes
There are different types of air recirculation mode:
Manual
air recirculation mode (heating system, air conditioning (manual), Climatronic).
...
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Refrigerant circuit with expansion valve
Test and measurement work that can be performed using a pressure gauge