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Yes. I always do this on pre flight. When turning on the master, the pump maybe runs for 5 to 10 seconds, to close the doors. Or if I haven't opened the doors with the hand pump, on turning on the master, the pump may run for 1 or 2 seconds just to "nip close the doors". All normal stuff, but no way should the pump run for minutes.
SunnySky.
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