Ddanrr
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I had a square D well pressure switch that was old and started to leak. So I put in a new switch. The problem now is when the switch reaches the cutoff pressure and shuts off, it bounces, or opens and closes the contacts several times (usually 2 or 3 times then stays off). This causes power pulses to the pump, which can't be good for it, and lots of noise. I thought it may be a bad switch, so I replaced it again, but still with the same result. The only way to make it stop is to increase the cutoff pressure, way beyond where it should be. The switch is at the pipe where it comes in thru the wall from the pump, the storage tank is across the room on the other side of the basement. Would a "water hammer arrester" fix this? If so where should it be placed, near the pump switch or by the tank? Or would a check valve near the switch fix this? It was never a problem with the old switch, and Im tempted to put it back in even though it leaks. Thanks for any help or ideas on how to solve this problem.