Volkswagen Touran Service Manual: Refrigerant Circuit
A/C System Repair Information
| An A/C system made for refrigerant R12 must not be filled
with refrigerant R134a without making modifications to the
refrigerant circuit. Refer to
→ Chapter "Refrigerant Circuit, Converting R12 to R134a and
Servicing". |
| The refrigerant oils specifically developed for R134a and
R12 refrigerant circuits are never to be mixed. |
| Service stations which come in contact with the refrigerant
are only to be used for the intended refrigerant. |
| Components of R134a refrigerant circuits can be identified
by their markings, green labels or design (such as different
threads) to prevent interchanging with components designed for
refrigerant R12. |
| A label indicating the refrigerant used is provided in the
engine compartment on the lock carrier or in the plenum chamber. |
| Different refrigerants are never to be mixed. |
 Note
| When working on the refrigerant circuit, always heed the
information given in the sections on "Safety measures". Refer to
→ Chapter "A/C System and Refrigerant R134a Safety Precautions"
and "Basic rules for working on refrigerant circuit"
→ Chapter "Refrigerant Circuit, General Precautions". |
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Refrigerant Circuit, Converting R12 to R134a
| CFC refrigerants are no longer used in the automotive
industry. |
| Converting refrigerant circuits from R12 refrigerant to
R134a refrigerant and servicing converted circuits |
| Repair Manual Air conditioner with refrigerant R12 Parts 2
and 3. This repair manual is only available in hard copy. |
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Note
The laws and regulations listed below are applicable in
Germany. Different or additional laws and regulations may apply
in other countries.
...
Other materials:
Volkswagen Touran Owners Manual. Checklist
The following jobs should always be carried out in the given
order before working in the engine compartment :
Park the vehicle on a level and stable
surface.
Depress and hold the brake pedal until
the engine has stopped.
Apply the handbrake Braking, stopping
and parking ...
Volkswagen Touran Service Manual. Certificate of Conformity
The vehicle manufacturer must request an EU type approval
for all passenger vehicles (vehicle class M1).
A certificate of conformity is produced based on this type
approval.
This document confirms that the vehicle confor ...
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Refrigerant Circuit, Converting R12 to R134a and Servicing