Important Repair Notes
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- Air conditioning systems designed for refrigerant R12 are only to be filled with refrigerant R134a if certain requirements are fulfilled. Refer to → Refrigerant Circuits, Converting from R12 Refrigerant to R134a and → Repair manual: Air conditioner with R12 Parts 2 and 3 (this repair manual is only available in hard copy).
- The refrigerant oils specifically developed for R134a and R12 refrigerant circuits are never to be mixed.
- A/C 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 recognized from their labelling, green stickers or design (e.g. different threads) to prevent interchange with components 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 pay attention to the information given in the Sections on "Safety measures" → R134a Safety Precautions and "Basic rules for working on refrigerant circuit" → Basic Rules for Working on Refrigerant Circuit .