Volkswagen Polo Service & Repair Manual: Refrigerant Circuit Connections with Valve for Switches
 Note
| For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit. |
WARNING
| There is a danger of ice-up. |
| Refrigerant will leak out if refrigerant circuit is
not discharged. |
| Refrigerant must be extracted before removing valve
-C-. If refrigerant circuit
is not opened within 10 minutes of extraction, pressure
may form in refrigerant circuit due to evaporation.
Extract the refrigerant once more. |
|
| Different threads for switch on high pressure and low
pressure sides.
|
|
|
|
| Only valves and o-rings that are resistant to refrigerant
R134a and refrigerant oil must be installed. |
| A - |
Connection (soldered in) |
|
|
|
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Other materials:
Test Requirements
Radiator and condenser are clean (clean if necessary).
The ribbed belt for the A/C compressor and alternator
tensioned correctly.
All air ducts, covers and seals are OK and installed
correctly.
...
Pressure Gauge, Tests and Measurements
Indicators on pressure gauge
1 -
Temperature scale for refrigerant R134a CF3–CH2F or
CH2F–CF3.
2 -
Pressure scale
The pressure gauge may have one or more temperature s ...
Tread Depth, Measuring
Note
When measuring tread depth, take measurements in the main
grooves.
Do not take measurements at the tread wear indicator.
Tread depth of a tire must be mea ...
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A/C Refrigerant Low Pressure Switch -F73
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