contacts on pressure switch wont open


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Old 08-31-13, 10:55 AM
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contacts on pressure switch wont open

I installed a new pressure switch and the pump works and it builds pressure, the points close at 30 psi and open at 55 psi, and after a day of messing with the new switch everything was fine. 5 days later no water and it was because the points were closed and wouldn't open. When I push them they open right up. And if I dial down the pressure a bit they open right up. I just cant understand why if the pressure is up high enough why they aren't opening up. Its almost like the pressure guage says its at 55 psi but it just doesn't have enough kick to open the points. Any help figuring this little but painful problem out is GREATLY appreciated. Why if the pressure is up high enough to open with me either pushing them open or dialing down the pressure a bit, will they not open on their own.
 
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Old 08-31-13, 11:09 AM
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Welcome to the forums.

Actually a common problem. Your switch is not actually seeing the water pressure. You have a blockage in the small pipe or connection to the pressure switch. With time and age (and rust) it's more than likely restricted or blocked off.
 
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Old 08-31-13, 11:45 AM
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But the switch is less than a week old and I cleaned both the switch pipe and the water pipe. It seems like that just couldn't be the problem since I just cleaned everything all out. Aldo, I don't know if this has something to do with it or not but when the points close the pressure takes a long time to build back up. I would say 50% longer than the last time I was closely monitoring it which was years ago probably but then I had to change the switch so I was watching it closely. Maybe it just takes longer now? I don't know, but my main problem is the points not opening, and this switch I'd brand new
 
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Old 08-31-13, 01:36 PM
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Have you tried running the pump with the pressure switch removed ?
You should get a stream of water out of the pressure switch fitting.
 
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Old 09-01-13, 02:11 PM
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sneuts-

I installed a new pressure switch and the pump works and it builds pressure, the points close at 30 psi and open at 55 psi ...
PJ knows more than me about this, but I think pressure switches are normally 30-50 or 40-60 (I think there is also a 20-? also, not sure).

Are you sure you replaced your old switch with the same type? I don't think you can get a 30-55 range.
 
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Old 09-01-13, 04:22 PM
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Most pressure switches are infinitely adjustable throughout their range. The ranges mentioned are just the factory settings.
 
 

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