Danger ! | Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant. | Do not perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained. | |
| Protect air conditioning circuit and components from moisture when carrying out repair work | ||
| Notes on handling refrigerant R134a | ||
| Check | ||
1 | Check all air conditioning components for damage and leakage | Replace corresponding component if necessary. | |
Filling | |||
2 | Evacuate/fill air conditioning system with air conditioning service unit | When filling the air conditioning system, add the amount of oil that was evacuated back into the refrigerant circuit. Use new oil. | |
Observe additional oil quantity after replacing parts: | |||
| |||
Correct oil level in air conditioning system after replacing parts. | |||
Additional oil filling quantity after sudden emptying of system (e.g. line ruptured) | |||
Total filling capacity - refrigerant | |||
| Check | ||
3 | Check air conditioning system for leakage |