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:
Two-Part HS Wet-in-Wet Filler
Definition:
Two-Part HS Wet-in-Wet Filler -LVM 013 008 A4-, light gray
Two-Part HS Wet-in-Wet Filler -LVM 013 905 A4-, black
Edition 03/2015
Product Description
...
Support Mode with Battery Charger -VAS5095A
General Information
The support mode provides the vehicle electrical system with
voltage when the battery is removed or disconnected.
For more information. Refer to Battery Charger -VAS5095A-
Operating Instructions.
...
Indicator lamps and fuel gauge
Fig. 129 In the instrument cluster: Variants
A and B: fuel gauges for petrol and diesel. Variant C: fuel gauge for autogas
First read and observe the introductory information
and safety warnings
Lit up
Needle position
Possible cause ...
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Refrigerant Circuit with Expansion Valve
Pressure Gauge, Tests and Measurements