Volkswagen Polo Service & Repair Manual: A/C System, Operating after Charging
Caution
| If it is suspected that chemicals were added to the
refrigerant circuit to seal leaks, do not connect the
A/C service station and do not extract the refrigerant. |
| Chemicals that seal leaks in the coolant circuit
form deposits that affect the function of the A/C system
and lead to failure of the A/C system and the A/C
service station. |
| Inform that customer that there are substances in
the A/C system that are no approved by Volkswagen. This
A/C system cannot be drained or serviced in the
workshop. |
|
 Note
| The chemical materials (stop leak additive) for sealing
leaks in the refrigerant circuit offered on the market are not
approved by VW Audi AG. There are no permanent- ,validity or
material compatibility tests. Therefore damage or malfunctions
in the A/C system or the A/C Service Station cannot be excluded. |
| The stop leak additives offered on the open market have
different physical and chemical properties, which can impair the
function of the A/C system and the A/C Service Station and can
even shut down the system completely. |
| VW does not approve the use of chemicals to seal leaks in
the refrigerant circuit. |
| Chemicals used to seal leaks in the refrigerant circuit
often react with air and the moisture in it. They cause deposits
in the refrigerant circuit and the A/C service station and
malfunctions in valves and other components that they come in
contact with. These deposits cannot be removed completely from
the components. |
| Chemicals used to seal leaks in the refrigerant circuit
usually cannot be detected from outside. The label that should
be applied to identify it is often missing. Therefore be careful
when working with if you do not know its service history. |
| Accessories offer containers used to separate out these
chemicals (used to seal leaks in the refrigerant circuit).
Because VW does not approve the use of these chemicals, there is
no evidence of the effectiveness of these filters. |
Note
| If A/C compressor was removed, it must be cranked by hand at
ribbed belt pulley/freewheel approximately 10 rotations before
bringing into operation for the first time. This prevents damage
in the A/C compressor due to liquid when switching the A/C
system on. If there is oil in the A/C compressor cylinder, it
will be forced out. |
|
|
|
| – |
Start engine with compressor switched off (version with A/C
clutch). |
| – |
Set the A/C compressor to minimum output, for example,
"ECON" mode or A/C off (version with no A/C clutch with
regulator valve). |
| – |
Wait until idle speed has stabilized. |
| – |
Switch on the compressor and operate the system for at least
two minutes at idling speed. |
| – |
If necessary, check pressures in refrigerant circuit using
A/C service station. |
| – |
Screw out handwheel on quick-release coupling adapter. |
| – |
Disconnect charging hose from refrigerant circuit. |
| – |
Screw protective caps back on. |
|
|
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Caution
If it is suspected that chemicals were added to the
refrigerant circuit to seal leaks, do not connect the ...
Caution
If it is suspected that chemicals were added to the
refrigerant circuit to seal leaks, do not connect the ...
Other materials:
Flat Spots
What is a Flat Spot From Standing?
Terms like flat portion, flattening, are also used as a term
for flat spots from standing.
Flat spots from standing cause vibration, like an
incorrectly balanced wheel. It is important ...
Using a child seat on the rear seats
First read and observe the introductory information
and safety warnings
When fitting a child seat to a rear seat, the position of the front seat must
be adjusted to ensure that the child has sufficient space. Adjust the front seat
according to the size of the child seat and child. Ensure that ...
Mechanical controls on the front seats
Fig. 37 Front left seat controls with
convenient entry function.
Fig. 38 Front right seat controls without
convenient entry function.
First read and observe the introductory information
and safety warnings
Front left seat controls with convenient entry function
The layout of the controls ...
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Refrigerant Circuit with A/C Service Station, Filling
Refrigerant in A/C Service station Container, Filling