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:
Charging devices that do not require a permit
Charging devices that do not require a permit are mobile
charging devices into which pressurised gases are charged into
compressed gas containers for exclusive use of one company.
Note:
Some air conditioner service devic ...
Opening and Closing Falcon Wing
Doors
Model X has falcon wing doors that easily open and
close by pressing a button, using a key fob, using the
mobile app, or touching the associated icon on the
touchscreen. The falcon wing doors are equipped with
several sensors that detect the presence of people and
objects and, if an object is d ...
Causes of vibration
Vibration can have a number of different causes. Vibration
can also be caused by tyre wear. Tyre wear caused by driving is
not always evenly spread across the entire running surface of
the tyre. This causes slight imbalances which affect the smooth
runni ...
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Refrigerant circuit with expansion valve
Test and measurement work that can be performed using a pressure gauge