| Connecting A/C service station for measuring and checking |
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| Connect the A/C service station to the power supply. |
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| Connect quick-release connector adapters to filler hoses for A/C service station (handwheels not turned inwards, i.e. manual stop valves not open). |
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| Switch on A/C service station and evacuate filler hoses (necessary only if there is air in the filler hoses). |
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| Switch off A/C service station. |
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| Unscrew sealing caps from service connections (with valve). |
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| Connect service station via service connections to the vehicle refrigerant circuit using quick-release connector adapter. |
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| Turn handwheel of quick-release connector adapter inwards only far enough to ensure that valves on service connections are open (check using a manometer; do not overstress valves). |
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| Perform the intended measuring and checking work. |
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