Well pump won't prime?

[Rod M1]

The well is 30ft down with 20ft of water in it 1-1/4 pipe new point Goulds J7S jet pump. The pump whose tested last summer on another well and worked fine. The system will hold presser from the check valve threw the plumbing system don't think its a leak there. From the well point to the check valve there is a slit presser vacuum when removing pipe fitting on the well.

My question is what kind of vacuum should I be getting to draw the water up to the surface. If I put my hand over the pipe fitting while priming on the well I get some suction but its slight not like a shop vac more like something on a car.

 

[LLigetfa]

The well is 30ft down with 20ft of water in it...

By my math, the water is 10 feet below the surface and a pump should have no trouble lifting 10 feet. Sand-point wells with a top-side check valve can be difficult to prime since the column of air has to move through the pump without losing prime.

Do note that jet pumps need water and pressure to pump so part of priming involves hold back as much of the water as possible while letting out the air.

 

[Sponsor]

 

[WorthFlorida]

Here is the priming instructions. You may already be following this procedure but as LLigetfa suggest, have to get the air out. Internally the jet can be clogged with a little rust or debris.

All Systems - Goulds Pumps J5S Installation, Operation And Troubleshooting Manual [Page 5]

Goulds Pumps J5S Manual Online: All Systems. ALL SYSTEMS Install Hydro-Pro Water Systems Tank While the tank is empty check the pre-charge WARNING air pressure with a tire pressure gauge. The tank pre-charge should be set 2 psi lower than the pump cut-in (turn on) pressure. On Goulds...

www.manualslib.com

Goulds pumps J7 Manuals

Goulds pumps J7 Pdf User Manuals. View online or download Goulds pumps J7 Installation, Operation And Troubleshooting Manual

www.manualslib.com

 

[Rod M1]

The flustering thing is the pump should have no problem and I don't seem to have any leaks but something isn't right. Maybe it's air locked I will look at the priming.

 

[LLigetfa]

Where is the check valve in relation to the pump? Best to place it as far away as possible from the pump.

What is on the discharge side of the pump that can help trap water yet let air bleed off?

 

[Reach4]

A shop vac normally cannot lift water 10 ft.

 

[LLigetfa]

A shop vac normally cannot lift (a solid column of) water 10 ft.

TIFIFY
At work we have vac trucks that can lift 100 feet so long as we blend air and water.

 

[Rod M1]

Didn't have the pump but it will be sitting on the block but should give you a general idea.