Important Repair Notes on Air Conditioning Systems

Important Repair Notes On Air Conditioning Systems

- Air conditioning systems designed for refrigerant R12 are never to be filled with refrigerant R134a without a retrofit.
- 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 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 follow the information given in the Sections on "Safety measures" and "Basic rules for working on refrigerant circuit" Basic rules for working on refrigerant circuit.