Refrigerant Circuit, Discharging

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Refrigerant is never to be allowed to escape into the atmosphere, but rather it is to be extracted from the refrigerant circuit using an extractor or A/C service station. The drained refrigerant will be locally recycled or is send to an environment-recycling place to the manufacturer (different or additional laws may apply in individual companies). For this reason, bring vehicle to a workshop that has the necessary tools and in which the work can be performed accordingly by qualified personnel, refer to HEATING, VENTILATION & AIR CONDITIONING (1 OF 2) or/and HEATING, VENTILATION & AIR CONDITIONING (2 OF 2) (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

Reason

If refrigerant R134a is released into the environment, it enhances the greenhouse effect.

NOTE:

Refrigerant R134a has far less of a greenhouse effect than R12.

Because R-134a does not contain chlorine atoms, the major catalyst in ozone depletion, refrigerant R-134a has no ozone depletion potential. Depletion of the ozone layer in the upper atmosphere is however only brought about by the splitting of carbon-chlorine bonds (as is the case, for example, with refrigerant R12).

After discharging the A/C system, disconnect the electrical connector from the A/C Compressor Regulator Valve -N280- or from the A/C Pressure/Temperature Sensor -G395-.

Reason

The A/C Compressor Regulator Valve -N280- is no longer activated and the A/C compressor runs at idle. The A/C compressor is designed so that the A/C compressor components are guaranteed to be lubricated at idle by an internal oil circuit (as long as there is enough refrigerant oil in the A/C compressor).