Shallow well pumps water then air then water..

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Old 05-10-09, 07:20 AM
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Shallow well pumps water then air then water..

I have a shallow well for my cabin. I only need 40 PSI and set it there.
For years I have had this problem of the pump running too much. Last year I had a well man replace the pump and inspect. He said the pump needed a new impeller. That did not fix my problem. When testing directly from the pump , the pump will push water, then pause then push water than nothing... when all hooked up...often I can watch the guage jump from 10 to 40 psi back to 10 etc and sometimes it will make it shut off and on every second for a minute or two, So its going CLICK CLICK CLICK etc on and off...I would guess a air leak between the pump and well , but have everything wrapped with plastic wrap. Our water table should be up. The well man put on a new point last year. I have googled this and doesnt seem like bad pressure tanks, check valves or leaks is my problem. Any Ideas why my water pump draws water consistantly inconsistant ? I am starting to think my well point is only partly in the water.
 
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Old 05-13-09, 08:14 AM
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This is a head scratcher, so let's just start somewhere.
You haven't said what type of tank you have (or pump), but if it's a bladder type, then follow the instructions on the above sticky to makle sure it's not waterlogged and has the right amount of air in it. If it's a galvanized steel tank, the instructions are there to cover that also. This will at least eliminate this as a problem.
What pump are you using? Has the foot/check valve been replaced?
It does sound like the pump may be starving for water (too much pump for well?).
Info on pump and tank sizing may be helpful.
Ron
 
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Old 05-13-09, 09:46 AM
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1) My problem happens before the pressure tank.

I can disconnect the line from the pump to the tank and it pushes water than not then water then not.
The pump is like a 3/4hp Ace hardware pump.

it is not the bladder type. Its old and works fine.

I know nothing about check valves. I do not lose pressure once its up.

My problem is inconsistant sucking up of water.
I think I have to drive the well point down a foot and see what happens.

the pipe is only the 2 inch.
its about 12 feet deep.
 

Last edited by sdanville; 05-13-09 at 09:48 AM. Reason: add well size
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Old 05-14-09, 07:48 AM
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Then I would have to say that the pump is starving for water. You might be able to help it out a little by partially closing the discharge valve (if one is installed) so that the pump can't pump down the level as fast.
It does, though, sound like a long term solution will be necessary.
Ron
 
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Old 05-14-09, 09:19 AM
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discharge valve

thank you very much.
I will google discharge valve as I dont know what that is,
other than it must be an option to slow down the water flow.

Steve
 
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Old 05-15-09, 07:57 AM
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The valve is a regular ball valve. It's just installed on the discharge side of the pump.
Ron
 
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Old 05-15-09, 08:35 AM
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discharge valve

Ive got one. Will try working it tomorrow and report back.
 
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Old 05-19-09, 06:52 AM
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Better pumping...

For whatever reason, my pump was much better this past weekend. Not perfect, it still gulped for air but not so much.
Talking to a local, a few days before there were major storms so maybe the water table went up an inch. I will report back as the summer goes by. Follow up is what many forum problems are missing. Often I wonder....so what happened ? Was it ever fixed ?
 
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