Refrigerant: Description and Operation

Capacity Information

Evacuate and fill the refrigerant circuit.

- Operate the A/C system after filling the refrigerant circuit, refer to => [ Operating After Filling Refrigerant Circuit ] Heating, Ventilation & Air Conditioning.

• When charging the A/C system, always use maximum amount of refrigerant R134a, as some of the refrigerant remains in the hose of the refrigerant recovery, recycling and recharging unit.

• The refrigerant circuit may only be filled with approved refrigerant oils.

• 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.

• 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.