| Discharging refrigerant circuit |
| Refrigerant must not be allowed to escape into the environment; it should be extracted from the refrigerant circuit with a suction unit or an air conditioner service station. The extracted refrigerant must then either be re-processed on site or returned to the manufacturer for proper disposal (different or additional regulations may apply in other countries). For this reason, the vehicle must be taken to a workshop which is equipped with the necessary tools and at which the work can be performed by appropriately qualified personnel → Air conditioner with refrigerant R134a. |
| If refrigerant R134a escapes into the earth's atmosphere, it contributes towards the greenhouse effect. |
Note | Refrigerant R134a does not affect the earth's ozone layer (R134a is an H-FC with no chlorine atoms). Depletion of the ozone layer in the upper atmosphere is only brought about by the splitting of carbon-chlorine bonds (as is the case, for example, with refrigerant R12). |
| After draining the air conditioner, unplug the connector from the air conditioner compressor regulating valve -N280- or the high-pressure sender -G65-. |
| The air conditioner compressor regulating valve -N280- is then no longer actuated and the air conditioner compressor runs at idle. The air conditioner compressor is designed such that lubrication of the air conditioner compressor components is guaranteed by way of an internal oil circuit at idle (provided there is sufficient refrigerant oil in the air conditioner compressor). |
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