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My shallow well pump starts and stops way to often. How much pressure should I have on my pressure tank

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I would like to know what size tank you have and how you use it? I have always set my pumps pressure switch at 30 psi. on and 50 psi. off. But you may have different settings. What I do is set pressure in tank at 2 psi below on pressure. In my pump it is set at 28 psi. Hope this helps. Thanks

Posted on Nov 14, 2010

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We have a 6.5 GAL shallow well pump that won't pump. There is no air pressure in the tank (tested with a car air pressure gauge) Tried pumping air in with a manual pump - didn't accept any air - help!


Your expansion tank is no good.Try replacing the air tank, but if this doesn't help, it sounds like you may have burned out the pump.
.

Jul 28, 2017 | Plumbing

1 Answer

My sand point well the water stops and starts again


You probably need to purge the pressure tank.
Well Pressure Tank Installation Instructions

Pressure tanks lose their Pre Charge pressure and have to be serviced. The well Pump needs to OFF. The Pressure tank needs to be emptied of water. There should be an air valve on the tank. Check the pressure .If this is a Bladder tank and Water comes out of the air valve- then the bladder is broken and the tank needs to be replaced. The Pre Charge pressure is set to 2 psi Below the cut-in pressure set by the pressure switch. If your system operates at 20-40 psi, The Pre Charge pressure will be 18 psi. Hope this helps.....

Mar 18, 2014 | Bur-Cam Pumps 750896 Water Shallow Well...

1 Answer

My water system is loosing pressure. The pump runs until it gets to the preset of 50 psi but when it stops, the pressure drops right away. if I shut off the pump, it drops to 0 psi. I checked the pressure...


There is a screened check valve that should be attached to the pick up / suction side of the pump on the very end of the plumbing in the bottom of the well. If you have shut off the water output going to the home / what ever and the pump still drops pressure to zero as soon as it shuts off the shallow well foot valve is stuck open / has failed.

Some systems use both a foot valve and an in-line check valve to prevent the symptom you currently have.

Foot valve example:
http://www.docolfaucets.com/ingles/produtos_detalhe/docolvalves-24/check-valve-and-retention-valve-93/foot-valve-for-well-w-check-valve-line-bsp-thread-348/foot-valve-for-well-w-check-valve-1928
More examples:
http://www.plumbingsupply.com/wellpart.html

http://www.plumbingsupply.com/images/well-footvalve.jpg

If this valve has failed... there is nothing to prevent the contents of the pressure tank from dumping back into the shallow well.
I doubt you have a shut off on the pump suction side but if you do once the pump shuts off close this valve. I would bet your pressure tank holds the pressure. If you do not have a shut off valve... just feel for a rush of water in the suction pipe AFTER the pump reaches pressure and shuts off. If your feeling water flow with the pump off and the tank at pressure / loosing pressure the foot valve is bad.

Thanks for choosing FixYa,
Kelly

Apr 18, 2011 | Sta Rite 3/4 Hp Above Ground Pump Ne640

1 Answer

I have a 3/4 hp shallow well pump. It running at about ten on my pressure gauge. That means no pressure. What can I do?


If the pump turns on and off real fast, then your pressure tank is water logged. If you have
a pressure tank with a diaphram in it, you need a new tank. If it's a plain tank, then you
need to turn off the pump, drain the tank and turn it on again. All pressure tanks need
a cushion of air on top.

If the pump isn't short cycling, then try adjusting the pressure switch. There are two springs
under the cover, with adjusting nuts on them. One is for the cut in, the other is for the cut out.
I would set it so the pump turns on when the pressure drops to 30, then turns off when it hits 50.

Hope this helps ya !

Oct 31, 2010 | Flotec Corrosion Resistant Shallow Well...

1 Answer

Pump cycles like crazy!!


Sometimes a new tank the blatter will be kinda sealed to the sides of the tank.the amount of air in the tank s/b equal to the cut in pressure of the pressure switch.(40 lb) that would be (60 lb) cut out if you messed with the little screw on the pressure switch you have a problem.there must be the 20 psi of differance between start and stop.

May 13, 2010 | Flotec Corrosion Resistant Shallow Well...

1 Answer

Installed a new jet pump for shallow well (gravity feed to pump) - used old pressure tank - after about 4 months pump began kicking on and off constantly when in use - troubleshooting guide suggested it...


The pressure tank must have a certain amount of air in it so pump doesn't cycle as you say. The new pressure tanks have a bladder that separates air from water and keeps the pump from cycling so much. Make sure your pressure switch on the pump is OK--ie doesn't have burned contacts!

Mar 01, 2010 | Flotec Corrosion Resistant Shallow Well...

2 Answers

Shallow well pump cycles on and off quickly? Stays on while water is running than shuts off when valves are closed.


Do you have a tank in this system? If you don't, this is the way the well pump will operate.

If there is a tank, it will have a pressure switch on it which controls the pump -- it'll cut the pump on when the tank pressure drops to 28 psi, and cuts the pump off at 40 psi.

If you have a tank, the pump behaving as you describe indicates there is something wrong -- need more info.

May 05, 2009 | Flotec Corrosion Resistant Shallow Well...

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