Installation Work With Intervention In the Refrigerant System

Installation work with intervention in the refrigerant system

The content of the refrigerant system must be properly disposed of before all work on the air- conditioning system which necessitates opening of the refrigerant system. The safety regulations must be observed here.

Dirt and moisture must be kept away from the piping system of the air-conditioning system. For this reason, extreme cleanliness must be ensured during all work. No parts of the system must be cleaned internally with hot steam under any circumstances. Only nitrogen must be used for cleaning.

When a component is replaced, all openings must be sealed with suitable stoppers.

Note: After the air-conditioning system has been refilled, the first time switching-on of the air-conditioning compressor must be performed only with the engine idling. After initial start-up, the compressor is fully operable under all operating conditions.


General work sequence
1. Extract refrigerant
2. Remove fault part.
3. Evacuate
4. Check system for leaks.
5. Flush with refrigerant.
6. Perform extraction again.
7. Evacuate.
8. Fill.

Note: Pay attention to the sealing rings when disconnecting the hose connections.