Volkswagen Polo Service & Repair Manual: Contaminants Removed from Refrigerant Circuit
| The reservoir/receiver/dryer or dryer bag/cartridge should
not be replaced under the following conditions. |
| After an accident when there is no damage on the
reservoir/receiver/dryer. |
| The repair was done quickly (not beyond the normal repair
time) and no moisture has entered. The vehicle is not older than
5 years. |
| The reservoir/receiver/dryer or dryer cartridge should be
replaced under the following conditions. |
| The refrigerant circuit was opened and the vehicle is older
than 5 years. |
| The refrigerant circuit has been opened for an indefinite
period of time (slow leak). |
| The repair exceeded the normal repair time and moisture has
entered. |
| Always replace the receiver/dryer or dryer cartridge after
flushing with compressed air, nitrogen or refrigerant R134a.
Leave original parts in their packaging as long as possible to
minimize the amount of moisture they absorb. |
| The A/C compressor has locked up. |
| The reservoir/receiver/dryer is damaged (accident). |
| – |
Discharge the refrigerant circuit. |
| – |
Remove the A/C compressor. |
| – |
Rectify cause of trouble. |
| – |
Examine expansion valve for dirt or corrosion; replace if
necessary. |
| – |
Remove oil drain plug from A/C compressor. |
| – |
To accelerate drainage of refrigerant oil, rotate compressor
e.g. by way of ribbed belt pulley/clutch plate of A/C clutch for
example. |
| – |
Pour old refrigerant oil out of A/C compressor. Handling
refrigerant oil. |
| – |
Then fill compressor with quantity of fresh refrigerant oil
corresponding to quantity of refrigerant oil in original part
compressor. Refer to
→ Rep. Gr.87. |
 Note
| Which refrigerant oils and quantities are used for the
various compressors. Refer to
→ Rep. Gr.87. |
| To ensure the compressor is lubricated at start-up, at least
80 cm3 of refrigerant oil must be
poured into the compressor. The remainder can be added to the
new reservoir or receiver/dryer. Refer to
→ Rep. Gr.87. |
| If dirt has penetrated into the compressor with the
refrigerant circuit open (for example after an accident),
compressor is to be replaced. |
| – |
Replace receiver/dryer or accumulator and restrictor. |
| – |
Assemble, evacuate and charge the refrigerant circuit. |
|
|
|
Discharge the refrigerant circuit.
–
Replace the restrictor depending on the vehicle.
–
Rem ...
Other materials:
Refrigerant Circuit, Tracing Leaks, with Electronic Leak Detector -VAG1796
Note
This repair manual describes different methods for detecting
leaks in the refrigerant circuit. These methods have been tested
and result in success when used correctly.
If when searching for compressed air / Nit ...
Upper section of the centre console
Fig. 7 Overview of the upper section of
the centre console
Key for :
Vent
,
Button for:
Seat heating for the left and right
Traction control system (TCS)
Rear window heating
Hazard warning lights
Indicator l ...
Working on Airbag System
WARNING
When working on the airbag system (pyrotechnic
components, Airbag Control Module -J234-, wiring), the
ground cable must be disconnected with the ignition
switched on.
...
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Replacing Reservoir, No Contaminants, No Loss of Refrigerant