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. |
|
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:
Sprayable Sealant
Definition:
Sprayable Sealant -D 476 KD1 M2-, gray
Sprayable Sealant -D 476 KD2 M2-, black
Edition 08/2012
Product Description
Sprayable Sealant -D 476 ...
Matting Component -ALN 775 106
Definition:
Matting Component -ALN 775 106-
Edition 04/2013
Product Description
With the two-part HS top coat, the Matting Component -ALN
775 106- produce a matted top coat c ...
Cleaning and caring for the deck stripes
First read and observe the introductory information
and safety warningsDeck stripes are a design feature and are made up of soft
polyvinyl chloride (PVC).
In the areas of the vehicle where there are deck stripes, the underlying paint
layer is protected from weather and environmental condition ...
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Refrigerant Circuit with Expansion Valve
Pressure Gauge, Tests and Measurements