| Connecting air conditioner service station for measuring and checking |
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| Depending on the type of equipment chosen, there may be variations in the required procedure; therefore always follow the user's manual for the equipment being used. |
Note | Always follow the procedure described in the user's manual for your air conditioner service station -VAS 6007A- (or later model). |
| To prevent air or moisture from entering the refrigerant circuit through the charging hoses, they must be connected after the following procedure: |
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| Connect air conditioner service station to power supply. |
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| Unscrew the sealing caps from the service connections, or unscrew the connections with the valve (see vehicle-specific refrigerant circuit). |
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| Evacuate charging hose. |
Note | Connect the charging hose to the service connections of the refrigerant circuit using quick-release couplings. |
Caution | Do not open the valves in the low- or high-pressure sides when the engine is running. Otherwise, if the air conditioning is switched on, the air conditioner compressor or the air conditioner service station may be destroyed by a „short circuit“ between the high- and low-pressure sides of the refrigerant circuit. |
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| Turn hand wheel into quick-release coupling adapter until the valve in the service connection is definitely open (observe pressure gauge; do not over-tighten valve). |
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| Start the engine and perform the planned tests and measurements. |
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| Compare determined values with specifications → Chapter. |
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| Before disconnecting the quick-release coupling, close it by turning out the handwheel. |
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