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Why does my submersable well pump run constantley?

I changed the presure switch, and checked the bladder tank. Still the same.

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  • Ben Seman
    Ben Seman Apr 28, 2013

    I only have 30 lbs. presuer, but it holds presure when you shut the pump off.



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Thanks for giving me the encouragement to pressurize my Kenmore 1/2 horse shallow well holding tank. 60 psi did the trick (mine is set to 40 - 60psi)

No doubt the bladder in mine is broken because it did squirt water out of the rear valve (located 1/2 way up the back), but nonetheless, the water pressure is much smoother now, and the pump cycles much less.

Posted on Oct 31, 2013

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Hi Ben..
Be sure you have an air cushion inside of your tank, or otherwise it will turn on and off too fast. Normally you fill/set the air first.... but it can be done either way, just be sure that you have about 1/4 of your tank an air cushion, this stops the pump from cycling on and off to fast

Posted on Apr 28, 2013


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SOURCE: How do you replace a pump pressure switch and or tank?

i would check the bladder first the switch only turns it on and off the bladder helps with the volume of pressure there is a air fitting on the top if the bladder is bad push the valve with a screw driver tip water would spray out with a tire pressure gauge set the pressure a couple pounds highter than the turn on pressure thats free to try you can't bring back parts

Posted on Mar 27, 2012

Testimonial: "Thank's Mike, I was able to trouble shoot it and it is the bladder in the tank. I was able to re inflate it with my compressor and reset the pressure switch as you described.It solved the problem for a few hours, but it is definitly leaking.It's time to replace it.Thank's again"

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SOURCE: Cabin pump, primed fine only goes to28psi and keeps running

Sounds like the injector nozzle is plugged. This nozzle is directly inside the influent line on single line jets and down in the well on two-line jets. I'm assuming you have it primed correctly. If this happened suddenly the it'd definitely the injector nozzle. It it was a gradual process over time then I would say it's either a badly worn nozzle or worn impeller.

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SOURCE: tran charge pump presure low. changed pump volvo loader L70C

Stopped up suction screen can cause this. Also pressure regulator.

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SOURCE: tsurumi submersible vancs series pond pump has

To get a new owner manual send them an email and they will email or send you one,

Is the pump was working fine for a long time before that happen?
if yes
There is a motor problem,
You can check your pump power cable try to find any damage or hole in it.
If the cable fine
And if the impeller and wheel still turn before triping the breaker It would be a good thing to check the amperage with a special electronic tool to see how much amperage the pump take,
if you are good in manipulating tool we can send you the breakdown or i can support you to open it and to check the motor trying to find any burn part in it. That way we will know right away if its worth to fix it.

let me know

Posted on Nov 11, 2009

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1 Answer

Pump not holding presure

If you have a bladder - type water pressure tank, it probably needs to be purged of air and then pre-charged to 18 psi. There may be directions on the side of the tank. Turn the water Pump off. Drain the tank of water. Check the pressure of the tank at the air valve on top of the tank. The pre-charged pressure of the bladder is set to 2 psi below the lower pressure set by the pressure switch, so in your case, the low end pressure is 20 psi. Therefore, the pre-charge pressure of the tank is 18 psi. If you set the pressure switch to operate at 30 -50 psi, then the pre-charge pressure would be 28psi., etc. Once the pre-charge pressure is set, turn the pump back on. ( don't forget to close the drain valve). The system should cycle normally. A tire gauge works to check the tank pressure. An air compressor may be used to charge the tank, but be careful not to over- inflate the bladder. A tire air pump may also be used. Hope this helps....

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The pressure tank will need to be replaced. Water coming out of the air valve stem indicates that the bladder is rupturesd

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A bladder tank is a water storage tank that is used to allow a pump to compress air inside the tank. Water can't be compressed so the tank is built with a bladder or balloon inside that allows the pump to be able to build up pressure inside the tank. This allows a pressure switch to turn on or turn off the pump. Typically if the bladder goes bad inside the tank the pump will cycle rather frequesntly.

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The short run time of the pump indicates very litttle water volume is needed to reach to turn off pressure. To me this indicates you may have two problems. There is a leak somewhere in the system that allows the pressure to drop to the turn on point. Any check valve will fail eventually so barring any other leak that is your problem. I would think only one check valve is needed in the system so the second one may have been added to crutch the first one leaking. Normally the one check valve is placed on the pump before it is attached to the well pipe. The pump must be removed from the well to accomplish the replacement.

The second problem has something to do with the storage tank. If the pumps runs whenever you open a faucet or in your short cycle situation, then your tank is way too small or it is "water logged". Assuming it has been sized correctly, which means at least 20 gallon capacity then air needs to be added to the tank which will compress when the pump adds water until the high pressure setting is reached. When water is release to the house the air will expand until the low pressure setting is reached and the cycle repeats. The point here is that a significant quanity of water flows between pump cycles.

If your tank was installed in perhaps the last 20 years then it is likely a bladder type whitch contains the water so it never comes in contact with the steel tank, preventing internal corrosion and leaching of metals into the water. If the bladder has failed then the formally isolated air will have been absorbed by the water and your short cycling condition develops. That is what happens in non bladder tanks so air needs to be added periodically. I think all bladder tanks have a car tire like valve stem attached to the tank so that the opperating pressure can be set by the manufacture. The valve stem rairly leaks so bladder failure causes the loss of the air in the tank. There should be a label on the tank specifying the factory pressure. Use a tire gauge to test for the proper pressure. Add air if it is below setting.

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1 Answer

Pump comes on shuts off then comes on shuts off

In other words, it is cycling quickly. Check your bladder tank for proper air pressure. You will have to shut the pump down and drain the tank to do this as the pressure in the bladder is set when the tank is empty, or nearly so, no pressure on it. Set air for a couple of lbs below the normal on point of the pressure switch. If you don't know what it is supposed to be, start at 28PSI, after pump is working, check system pressure while it is under load, meaning turn on the water and let it run and watch pressure gauge for when pump comes on. If no pressure gauge, install one as you need it to see if you system is working properly. It it isn't a bladder tank, just an older style tank, same thing, same procedure.

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1 Answer

Do I have to hook my tank to draw water from my well?

A bladder tank is designed to give a certain amount of gallons of "draw down" before the pump turns on. The pump will work with or without a bladder tank but will come on every time water is used. Well pumps (Jet or submersible) can run for extended periods of time without causing harm to the pump, but a pump that turns on and off constantly will eventually burn out because it is so hard on the pump.
Jet pumps need to keep "head pressure" to efficiently create the vacuum necessary to draw water from the drop pipe, this is partially what a well tank does.

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2 Answers

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The pump should only run if you are using water. If you have a leak it will cycle on and off. If it only cycling fast when you're using water, you may need an expansion tank, sometimes referred to as a bladder tank for newer style. If you have a "bladder" tank , the bladder may be leaking and lost it's air charge. This bladder will have an initial air charge, and when the pump runs it will compress the bladder even further. When the pump shuts off the bladder is compressed. When you begin to use water, mainly low flow like one faucet, the bladder will begin to expand expelling the water from the tank until the pressure drops below that of the pump pressure switch. This makes the pump start and stop fewer times.

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1 Answer

Our submersible well pump is surging, comes on and off about four times until the pressure has built up causing the pipes to make noise what can we do to fix it?

this is extremely hard on the pump. i would say off hand that your pressure sw is bad or in need of adjustment. also make sure that your pressure tank is not water logged. you do this by cutting the power to the pump and draining the system. when no water comes out of the hose there should be no water in the tank. if there is if its a captive air "bladder style" you need to replace. if its a standard either your snifter vavlve is bad or your level valve in the tank is bad. good luck ive run off wells for years and know what a trying experiance this can be

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1 Answer

My well keeps running i replace the pressure switch and the well starts working properly this happens every 6 months i have replaced the well , jet , and bladder tank why does this keep going on

by keeps running I assume that the presure switch doesn't cut out at the desired pressure and replacing the pressure switch solves the problem probably the contacts in the pressure switch are becoming welded if it worked for years and then this just started then if the pump has a capacitor start ( box inside the house between the pressure switch and the pump wires) you may want to cosider replacing that component and well your poking around verify that the rating of the pressure switch matches your pump requirements amps volts ect..
Good Luck

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