A/C System, Repair Information
When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure vessel regulations.
Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the system.
Only use tools and materials approved by the manufacturer.
The warranty is voided if non-approved tools or materials are used.
- An A/C system made for refrigerant R12 must not be filled with refrigerant R134a without making modifications to the refrigerant circuit. Refer to 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.
When working on the refrigerant circuit, always heed the information given in A/C SYSTEM AND REFRIGERANT R134A, SAFETY PRECAUTIONS and REFRIGERANT CIRCUIT, GENERAL PRECAUTIONS .
Special Tools and Accessories
The performance of proper workmanlike repairs on an air conditioning system:
- Requires the use of special tools and materials as listed in SPECIAL TOOLS .
- Requires compliance with the basic instructions for use of leak detectors. Refer to REFRIGERANT CIRCUIT, FINDING LEAKS WITH ELECTRONIC LEAK DETECTOR VAG 1796 .
- Requires expert knowledge.
Releasing refrigerant into the environment is not permitted (punishable by law). Refer to LAWS AND REGULATIONS .