MR MESSKO MSAFE, Operating Instructions Manual

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7 Operation
40 7232312/00 EN
7.2 Releasing blocked flap valve
If the Buchholz relay is equipped with the reset function, the flap valve is
blocked if there is a loss of insulating fluid or the flow speed is too high. In
these cases, you have to release the flap valve manually.
1. Remove the test button cover sleeve (open-end wrench, wrench size 24).
2. Turn the test button counterclockwise to the stop.
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The flap valve is released and returns to its starting position.
3. Check flap valve position via inspection window.
4. Fasten the cover sleeve onto the test button (open-end wrench, wrench
size 24, torque 5 Nm).