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We have a Gould's domestic water pump and the limit switch was replaced and it still runs constantly and won't shut off. Any ideas??????

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Yeah, if it won't shut off the pressure tank is not getting pressure to it or leaking out, first the cheapest ideas to try would be have someone turn water on when you are looking at the pressure gage, what psi is it, you want atleast 60, then, havet them turn off water, keep watching the gage for a minute see what it does if pump still runs its not building pressure so, is this a new install, or has it just started happening, if its new did you prime the pump? if you did the pressure gage may need replacing this is cheap, if that doesn't fix the problem, then you need to check your pressure tank the bladder may be worn out, so if I was you, I would also check for air leaks make sure all fittings are tight, you can take your hand and place on pump when running, turn water on to do this, or you may be able to hear air leaking, definate sign that your not building pressure so pump cant work with pressure tank, now if your bladder is still good once airleaks are fixed the bladder will build the pressure it needs then your done.

Posted on Aug 11, 2010

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My gould well water pump would not stop so is bought a new pressure switch which i installed and same thing. can you help me please


Sounds like the foot valve may be loosing it's prime. I would let it pump for a few minutes and then shut it off. Then after a few minutes disconnect the line going into the well. If the line has water in it and the water level is going down, you have either a bad foot valve or a leak in the lines going down into the well. It could be as simple as a loose connection. Hope this helps. I use to sale well pumps and have seen this many times. If you let the problem continue and the pump continues running it will throw the overload or will burn the pump motor up.

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Pump does not shut off and timer does not stop after the 20 minutes.


What is on?
If equipped with a Small (Laing or Grundfos branded) circulation pump, these are normally Constant Duty pumps running 24-7
If not and it is your Low Speed running, then your switching mechanism has failed. This is normally the symptom of a spa that has a Mechanical Timer. Does your spa have one? If so, it may have failed, replacement should take care of it.
If electronic, then a relay has fused together on the PCB, and the only proper repair is replacement of that Board.
Now... If you are referring to HIGH Speed (you were not very specific) then this is a problem! A serious problem that needs correction ASAP!
Why?
Because a pump that runs constantly on high speed will STILL HEAT the water long after the heater turned off! Until it boils!
That is if the high limits have failed as well, don't think it doesn't happen, it does!
A very potentially Dangerous situation.
Kinetic energy or friction of water moving through the plumbing occurs! There is a restriction of the path/flow of water through the spas complete plumbing system, but the pump pushes it still no matter what, over and over. This is energy transferred to the water.
Good Luck.

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I have a submersible Gould pump in a well. Recently air is getting into my system and coming out as irregular spurts. I replaced the water storage tank and the check valve, and the problem persists


Sounds like pump is not set deep enough and getting air. If the pump is as deep as it can go you may have to have to screen in the well changed or cleaned with acid pellets.

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1 Answer

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That is one of two things. It is not pumping enough pressure to cause the pressure switch to trip. If the accurate pressure gauge shows it is above about 45 PSIG replace the switch, if not you have a problem with the pump. I am assuming it does not shut off. If it does then you have a leak, if a well pump it may be in the foot valve.

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1 Answer

Gould water pump water pump will not shut off ,have replaced preasure stwich &GAGUE,HOLDING GOOD PREASURE


Does the switch click open, if so it is wired wrong. If not it is set to high.

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1 Answer

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check for air leaks in the connections our your pressure switch is bad

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My gould pump won't cut off after 40 psi


As the pressure TANK only holds the liquid under pressure, you now have two good tanks.

Did you adjust the pressure switch or check it for operation?

Either adjust it or change it with a known good one.

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1 Answer

Grundfos JPF4A pump. takes a long time to get up to prime then once it kicks in after running water it gets to 50 shuts of but drop pressure instantaneously and kicks back in again. The constant on off...


The check valve is bad. When the system builds up pressure and shuts off the check valve prevents water from dropping back down the well line. When the check valve goes bad water drops back down the well line and siphons water back out of the well tank causing the switch to kick on and off constantly. The check valve will between on the well line coming from the drop pipe. It may be making a constant rattling noise as pump is running. Replace the check valve and you should be fine. Also check the pressure in bladder tank it should be 2psi below the "cut-in" pressure for the switch.
RJ

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1 Answer

Gould 1/2hp submergible well pump cycles on and off constantly. low to no water pressure .The pressure switch remains in the closed position. Power to pump side of pressure switch good. pump runs 15...


My first thought was that of a water logged tank which causes short cycling, from your notes the tank is good (the tank may be partially water logged though) If the tank is ok and your getting short cycling (and the switch is good) I would guess your check valve down the well has failed. As the pump creates pressure then shuts off the water may be going right back down the well causing the pump to cycle again. This could also account for the poor water pressure as the check valve may be stuck slightly open allowing the system to loose pressure but only allowing a small amount of flow by when running. There could be a leak within the pumps drop-pipe and your loosing pressure through this leak. I expect you'll have to have the pump pulled.
I hope this may have helped,
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4 Answers

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sounds like cavitation in the pump due to the introduction of air. Check for leaks or cracks in the suction line so air isnt being induced into the pump.

Dec 19, 2008 | Plumbing

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