| Working on the refrigerant circuit |
| Work on the refrigerant circuit must only be performed in well ventilated rooms. Care should be taken to ensure that there are no inspection pits, shafts or cellar entrances within a radius of 5 metres. Switch on the extraction systems. |
| The escaping refrigerant is not only colourless and odourless, but also heavier than air and therefore displaces oxygen. If, despite observance of all the safety precautions, refrigerant gas is emitted, there may be a negligible risk of asphyxiation in poorly ventilated rooms and workshop pits. |
Note | The mixture of gas and air which forms when refrigerant gas escapes must not be inhaled - it must be extracted using suitable extraction systems (workshop extractor). |
| Welding, brazing and soldering must not be performed on parts of the filled air conditioner. The same applies to welding and soldering work on the vehicle if there is a risk that parts of the air conditioner could become warm. |
| The application of heat creates a severe build-up of pressure in the system which could cause it to burst. |
Note | Damaged or leaking parts of the air conditioner may not be repaired by welding or soldering - they should be replaced. |
| When servicing the air conditioner, all open components and pipe connections must be immediately re-sealed. |
| Moisture will ingress into the air conditioner components if they are left open for a lengthy period. Air conditioners which have been left open for a lengthy period cannot, therefore, be re-filled without replacing parts of the system. |
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