| Working on refrigerant circuit |
| Only perform work on the refrigerant circuit in well ventilated areas. Make sure that there are no inspection pits, shafts or cellar entrances within a radius of 5 metres. Exhaust gas extraction systems are to be switched on. |
| The refrigerant emerging is not only colourless and odourless, but also heavier than air and thus displaces oxygen. Should refrigerant gas nevertheless escape, this can result in an imperceptible danger of asphyxiation in poorly ventilated areas and inspection pits. |
Note | The mixture of gas and air which forms when refrigerant gas escapes is not to be inhaled. It must be extracted using suitable exhaust gas extraction systems (workshop extractor). |
| Welding, brazing and soldering work must not be performed on components of air conditioning system when charged. This also applies to welding and soldering work on the vehicle if there is a danger of air conditioner components becoming hot. |
| Exposure to heat generates considerable pressure in the system which could cause it to burst. |
Note | Do not repair damaged or leaking parts of the air conditioner by welding or soldering; they should be renewed. |
| When servicing the air conditioner, re-seal all open components and pipe connections immediately. |
| Moisture will ingress into air conditioner components if they are left open for a lengthy period. In such cases, air conditioners cannot be re-filled without having to replace parts of the system. |
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