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Old 08-04-2009, 09:37 AM   #1
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Jet Pump runs continually


In a home water system, the shallow well jet pump turns on frequently; seems like whereas the pump used to come on at 20 pounds and shut off at 50, it's now keeps the pressure between 45-50. It's fine to have the pressure up all the time but the continual on/off of the pump must be harmful.

So is the problem in the tank or in the pressure switch?

October; I'm still having this problem. It is just that the pump comes on with a slight drop in the pressure, then shuts off, so that the pressure remains high all the time, but the pump is running a lot. Question now is, Is This A Problem With The Pressure Tank or With The Pressure Switch?


Last edited by Jimbobwe; 09-12-2009 at 10:21 AM. Reason: reposting
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Old 08-04-2009, 10:25 AM   #2
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Jet Pump runs continually


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Last edited by Mike Swearingen; 08-04-2009 at 01:27 PM.
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Old 08-04-2009, 12:25 PM   #3
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Jet Pump runs continually


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Originally Posted by Jimbobwe View Post
In a home water system, the shallow well jet pump turns on frequently; seems like whereas the pump used to come on at 20 pounds and shut off at 50, it's now keeps the pressure between 45-50. It's fine to have the pressure up all the time but the continual on/off of the pump must be harmful.

So is the problem in the tank or in the pressure switch?
This means the pump can't build sufficient pressure to cause the pressure switch to shut off the pump.

The tank has nothing to do with it, it is nothing but a wide spot in the water line.

The switch may not be seeing the pressure change in real time due to lagging, meaning that the nipple the switch is plumbed on or, the tubing to the switch, the tubing fittings and the holes they screw into may be blocked, but probably not.

The jet in the pump, or the well if you have a 2 line jet pump, could be partially blocked, you may have a water leak or the water in the well may be much lower than in the past. Or the inlet to the foot valve could be partially blocked.

Are you in a drought?
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Last edited by Gary Slusser; 08-04-2009 at 12:27 PM.
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