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 Well, pump, tank, water quality, plmbg & electric
 Electrical wiring and components
 Pressure Switch Chattering
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Stumpy
New Member

FL
4 Posts

Posted - Jan 23 2011 :  10:53:32 AM  Show Profile  Visit Stumpy's Homepage Send Stumpy a Private Message  Reply with Quote
My pressure switch "chatters" or doesn't make sure contact just when my submersible pump comes on. Once it makes contact, everything works fine. I tries cleaning the points but that didn't help. Should I replace the switch or does it need to be adjusted?

I just replaced the pump and in doing so changed the above ground pipe location a little. The pressure switch is on a 3 inch long 1/4" galv nipple located about 10 inches from the well seal. The nipple is screwed into a 1" Tee. Is it possible the sudden surge of water pressure is causing this?

Thanks.

speedbump
Admin



Riverview
Florida
11719 Posts

Posted - Jan 23 2011 :  3:20:33 PM  Show Profile  Visit speedbump's Homepage Send speedbump a Private Message  Reply with Quote
Ideally the switch has to be near the tank to absorb the water hammer. If not, you get the chattering your talking about.

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Stumpy
New Member

FL
4 Posts

Posted - Jan 25 2011 :  10:06:39 AM  Show Profile  Visit Stumpy's Homepage Send Stumpy a Private Message  Reply with Quote
Thanks for the reply. I moved it a few inches closer. The switch is about 18-20 inches from the tank. It works great about 2-3 times then starts the chattering again. I tried cleaning the points but didn't help. I remember once having a similar issue when the tank air pressure is too close to the cut on pressure. At that time, I let out some air and fixed the problem.
Do you think the switch is too far from the tank?
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speedbump
Admin



Riverview
Florida
11719 Posts

Posted - Jan 25 2011 :  10:33:42 AM  Show Profile  Visit speedbump's Homepage Send speedbump a Private Message  Reply with Quote
20 inches isn't all that far, but sometimes, these things get weird. Like for instance if there is some kind of restriction keeping the water from getting to the tank, the switch is the only thing to take up the shock, so it chatters on and off rapidly until the water flow smooths out. Too small a pipe feeding the tank could be another culprit. The points aren't the problem, it's the pressure side of the switch that makes it chatter.

I've had a few that I couldn't make quit chattering using all kinds of tricks, until I physically moved it.

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justwater
admin



FL/GA
1492 Posts

Posted - Jan 25 2011 :  6:01:51 PM  Show Profile Send justwater a Private Message  Reply with Quote
also be sure your tank pressure is correct. 2 psi less than pumps cut on pressure.
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