Refrigerant R134a

Refrigerant R134a

- Bleed, evacuate and fill the refrigerant circuit.

- Operate the A/C system after filling the refrigerant circuit. Refer to=> [ A/C System, Operating After Filling Refrigerant Circuit ] A/C System, Operating After Filling Refrigerant Circuit.

• Note the information regarding operating the A/C system after filling.

• Depending on time period of production and on engine, compressor construction type may vary. Refer to Electronic Parts Catalog (ETKA).

• The R134a capacity will be different depending on the condenser version. A condenser on a 4 cylinder has a slightly lower capacity than a 6 cylinder.

• At start of production, A/C compressors manufactured by "Denso" (type "6 SEU 14") were installed. At a later point in time A/C compressors from other manufacturers (for example "Sanden", type "PXE 16" or "ZJX") can be installed.

• Depending on the type of A/C compressor, different refrigerant oil capacities are intended for the refrigerant circuit.

• Compressor as replacement part has different oil fill capacities, therefore note the exact part number. The reason for the different oil capacities in the compressor is the design of the compressor itself, note these oil capacities. Too much oil in the circuit leads to higher pressures and reduces cooling performance of the system. Too little oil may lead to lubrication problems in the compressor.

• Always fill refrigerant circuit as far as upper tolerance limit (some refrigerant remains in filler hoses).

• The refrigerant circuit may only be filled with approved refrigerant oils. Refer to Electronic Parts Catalog (ETKA)

• Different refrigerant oils are required for A/C compressors made by Denso, Sanden and Zexel/Valeo.

• Use only the specified oil from a sealed container and always reseal oil container immediately after use (PAG oil absorbs moisture). Do not use oil if it is contaminated with moisture or if oil container has been left open.