Volkswagen Polo Service & Repair Manual: Refrigerant Circuit with Restrictor and Reservoir
Arrows point in direction of refrigerant flow. |
A-Low pressure side of refrigerant circuit. |
B-High pressure side of refrigerant circuit. |
![Refrigerant Circuit with Restrictor and Reservoir](images/books/427/7/N00-10143.png)
Component |
Aggregate state of refrigerant |
Pressure bar (psi) positive pressure |
Temperature
in degrees Celsius (Fahrenheit) |
-1-
A/C compressor B-side |
Gas |
up to 20 (290 psi) |
up to 70 (158) |
-2-
Condenser |
From gas to vapor to
fluid |
up to 20 (290 psi) |
up to 70 (158) |
-3-
Restrictor |
From fluid to vapor |
B-side to 20 (290 psi),
A-side greater than 1.5 (21.8 psi) |
B-side up to 60 (140 psi),
A-side warmer than -4 (25) |
-4-
Evaporator |
From vapor to gas |
Greater than 1.5 (21.8
psi) |
Warmer than -4 (25) |
-5-
Reservoir |
Gas |
|
|
-6-
A/C compressor A-side |
Gas |
|
|
Pressures on A-side are maintained at approximately 2 bar (29 psi)
by “regulating” A/C compressor also at various engine speeds. However,
this applies only within the performance range of the A/C compressor; if
the performance limits of the A/C compressor are exceeded. Refer to
→ Chapter „Pressures, Checking“. |
Note
In vehicles with A/C Compressor Regulator Valve -N280-, the pressure
is modified on the low pressure side by the valve. |
A-Low pressure side of refrigerant circuit.
B-High pressure side of refrigerant circuit.
Component
...
Indicators on pressure gauge
1 -
Temperature scale for refrigerant R134a CF3–CH2F or
CH2F–CF3.
2 -&nb ...
Other materials:
Checklist
In some countries, special safety standards and emissions-related
legislation apply that may differ form the construction of the vehicle, Volkswagen
recommends that you visit your Volkswagen dealership before travelling abroad
to find out about any legal requirements and the following is ...
Mounting Damage
Bundle broken during tire inflation.
Modern radial car tires are mounted only on safety rims.
These have a hump -1- running along
the shoulders.
1 -
Hump (H2)
...
Fiber-Optic Cable, Assembling
Special tools and workshop equipment
required
Fiber-Optic Conductor Repair Set -VAS6223A-
Hose Cutting Pliers -VAS6228-
Vehicle Diagnostic Tester
It is very diffi ...
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