| Draining refrigerant circuit |
| Refrigerant must not be allowed to escape into the environment. It should be extracted from the refrigerant circuit by means of a suction unit or an air conditioner service station. The refrigerant removed is then either to 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 is to be taken to a workshop equipped with the necessary tools where this work can be performed by appropriately qualified personnel → Air conditioner with refrigerant R134a. |
| Should it escape into the earth's atmosphere, refrigerant R134a will have a detrimental effect in terms of global warming. |
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| Refrigerant R134a has far less of a greenhouse effect than refrigerant R12. |
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| Refrigerant R134a does not affect the earth's ozone layer (R134a is an H-FC with no chlorine atoms). The depletion of the ozone in the upper atmosphere is however only caused by the splitting of carbon-chlorine bonds (as is the case, for example, with the refrigerant R12). |
| After draining the air conditioner, unplug the connector from the air conditioner compressor regulating valve -N280- or from the refrigerant pressure and temperature sender -G395-. |
| 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 when idling (provided there is sufficient refrigerant oil in the air conditioner compressor). |
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