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Phil
Phil, Mechanical Engineer.
Category: Plumbing
Satisfied Customers: 5609
Experience:  Retired mech. contractor, shop owner, 51 yrs experience.
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I just purchased a coleman self-priming shallow well jet pump

Customer Question

I just purchased a coleman self-priming shallow well jet pump because my old pump seemed to overheat and quit I have it connected and the motor turns on but i am not getting any water return.
Submitted: 2 years ago.
Category: Plumbing
Expert:  Phil replied 2 years ago.

Phil :

All work to be permitted and inspected. WE KEEP GOING UNTIL YOU HAVE THE INFORMATION YOU NEED. I come and go. Be patient. This is step One.

Phil :

Hello if the foot valve at the bottom of the pipe in the well is not working properly you will not get any jet pump action.

Phil :

Tell me what the old pump was rated at, that data will be on the pump head... total feet of head, and GPM and the horse power rating on the pump motor

Phil :

Get me the same data off of the new pump

Phil :

Look this diagram over please, tell me if yours is this two pipe style of installation or not;

Phil :

http://www.inspectapedia.com/water/JetPumps2Line.htm

Phil :

You will have to scroll down the page a bit to see the diagram

Phil :

We can go from there until this resolves. Phil

Customer :

It is not exactly like that, it is similar but the pump has only one coming in from the well not two pipes, then one on top going to the tank. I was just down there working on it and my wife brought the idea to see if any water comes from the well which it does. So my next question i am wondering is do i need to put air pressure in the tank or will it do it itself, because since using the wet vac to suck water from the well which we got a return it is now trying to pump water, not alot a little aerated, but flowing.

Customer :

I am getting water out of the service valve now from after tank.

Phil :

Tell me if this is what you have

Phil :

http://store.waterpumpsupply.com/shalwelontan.html

Phil :

once the tank goes empty, it is the water from the pump that pressurizes the tank, you don't have to add air pressure

Customer :

Yes that is it

Phil :

if the pressure switch is set too high, that is higher than the pump is capable of in terms of total lift, the pump will run until it pressurizes the tank to the limit of its capability and will keep running and not shut off, and only start pumping water again when you open a tap and let pressure out of the tank

Phil :

tell me what the pressure gage reads on the tank and on the pump

Phil :

tell me if you have water flow at the taps in the house or not... if you do, tell me how long it takes to fill a one gallon jug of water from the cold water tap

Customer :

I am not getting any water from the well now....

Customer :

No i have no water from any taps

Customer :

and it is reading 0

Phil :

Did you say that earlier you were getting water from the well using a wet vacuum?

Customer :

Yes then i tried again and nothing

Phil :

if thats the case, it may be a bad pump, the impeller not fit properly into the pump housing so it lacks sufficient lift to draw water up from the well, or it may be running backwards, check that just in case

Phil :

how deep do you think the water table is

Phil :

http://www.nationalpumpcompany.com/Documents/OIM/Betta%20Flo%20IOM%20Jet%20Pump.pdf

Phil :

If the total lift is much over 22' a shallow well jet pump will not have the lift it needs

Phil :

Look on the new pump head or on the paper work it came with it will tell you what the total feet of head is on the pump

Phil :

compare that to the feet of head rating on the old pump and you may have the answer to why this pump is not moving any water

Phil :

see if you and use a heavy string or light rope with a weight on the end to determine how far down the water table is

Phil :

We can go from there. Phil

Customer :

We looked at old paper work nothing

Phil :

See sections D and E trouble shooting in the last link I sent

Phil :

if air is trapped in the horizontal section of pipe between the well head, and the pump, it may not self prime

Phil :

we need to know how far down the water table is as well

Phil :

if you have the old pump the feet of head rating will be on a tag riveted to the pump head

Phil :

http://www.nationalpumpcompany.com/Documents/OIM/Betta%20Flo%20IOM%20Jet%20Pump.pdf

Phil :

thats the link again, look at the extensive trouble shooting section,

Phil :

its most likely air trapped in the horizontal section of pipe leading to the pump suction, or too low a lift rating on the new pump

Phil :

for the depth of the well

Phil :

try priming the pump from the well head to the pump suction with water, you can pour it in from the tee. if there are any air leaks in that section of pipe the pump wont prime

Phil :

Phil

Customer :

I am trying to redo the whole thing, i put water in the Tee and there was water bubbling out of the tee and when i open the vent plug

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