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Pump is not working not pulling water not cutting on

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OR IT COULD BE A SHAFT SEAL ,CRACKED TANK LEAK IN A FITTING. IF YOU HAVE LET THE PUMP RUN OR HAVE STARVED IT FOR WATER IT IS THE SHAFT SEAL.. IF NOT THE JANDY VALVE MAY BE LEAKING. USE ELECTRICAL TAPE TO RAP SUCTION SIDE FITTINGS TO CHECK FOR AIR LEAKS. PUMP MUST HAVE WATER IN IT AT ALL TIMES !!! , NEVER USE THREAD TAPE ON A PLASTIC PUMP. IT ADDS SIZE TO FITTING AND WILL BREAK THE TANK..USE SILICONE

Posted on Jan 31, 2010

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Sounds like you have a check valve issue.

Posted on Mar 10, 2009

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1 Answer

How do I stop pump from running? Cistern connected pump does not seem to be pressurizing. Pump not cutting off, and getting hot.


Pump probably needs to be serviced. It probably pressurizes a tank and when that tank reaches a pressure the pump is turned off. But just guessing.

May 27, 2015 | Plumbing Pumps

1 Answer

Working pressure


Putting 60 lbs. of pressure in the pressure tank is not the answer.

First determine that the pump is working correctly, Open the drain valve and see if you get a good flow of water. If you do then OK, the pump is working. If you are not getting a good water flow from the drain valve, then the pump is not operating correctly - maybe a bad foot valve. Next open the drain valve and watch the water pressure gauge, and note at what pressure the pump kicks on ( that's the cut-in pressure), and when it kicks off ( that's the cut-out pressure). Most pumps are set to operate at 20-40 psi, or 30-50 psi. The cut-in and cut-out pressure is set by the water pressure switch.The pressure in the water tank has to be set 2 psi BELOW the cut-in pressure of the pump. That is, if the pump has a 20-40 psi differential, then the tank has to be pre-charged to 18 psi.

To pre- charge the pressure tank , the pump has to be shut off. The Tank needs to be emptied (drained ) of water. The air pressure is then set to 2 psi BELOW the cut-in pressure. If water escapes from the air valve, the bladder in the tank is ruptured, and a new tank needs to be installed.

So, first make sure the pump is working.
I WOULD RELIEVE MOST OF THE PRESSURE IN THE PRESSURE TANK TO ABOUT 20 PSI BEFORE CHECKING THE PUMP, AND PRCEEDING WITH THE PRE-CHARGE OF THE TANK.

May 24, 2014 | Plumbing Pumps

1 Answer

Connect pressure switch


Low Water Pressure This video will give step-by step instructions on how to adjust a water pressure switch. Note the procedure for pre-charging the pressure tank. The cut-in and cut-out adjustments on the switch are made with the electric on, so be mindful of working around live wires and contacts on the swithc.

Apr 07, 2014 | Square D FSG2J24M4CP Water Pump Pressure...

1 Answer

What causes a pentax smart head to cut off and on during use of water


There's not enough water running into the pump this is why its cutting out , hope this helps

Oct 09, 2013 | Plumbing Pumps

1 Answer

I had a water line bust. After fixing the leak, I lost water pressure. Someone tried to fix the problem and now we have little to no water flow. I have to pumps . The smaller pump that feeds the house is...


The nut on the larger spring in the pump pressure switch: Usually the larger nut in the pump pressure control switch adjusts the pump cut-on ("cut-in") AND pump cut-off pressures simultaneously. This is the left-hand spring (and nut) in our photo. That means that whatever the gap is between the cut-on pressure and the cut-off pressure, that gap is maintained, but the entire operating range of the pump is raised or lowered. Turning the large nut clockwise RAISES BOTH the cut-on and cut-off pressures. So turning the large nut clockwise shifts the whole operating pressure range of the pump UP to HIGHER pressures.
Conversely, turning the large nut counter-clockwise will lower the whole pump operating range. This is the simplest adjustment to make.
Photo (left) courtesy of a reader.
The nut atop the smaller spring in the pump pressure switch: this nut is used to narrow or widen the gap between the pump cut-on and pump cut-off pressures. This is the right-hand spring (and nut) in our photo).

Turning the small nut clockwise (tighter) will RAISE the CUT-OFF pressure, and vice versa, loosening or turning the nut counter-clockwise will lower the cut-off pressure. Watch out! If you loosen this nut too much you can set the cut-off pressure below the cut-on pressure and the pump will turn on and run forever (or until it burns up.)
Which nut to turn in the pump pressure switch control, and which direction to turn it, are usually visible on a label inside the pressure switch cover. Above we show photos of a common Square D water pump pressure control switch (Schneider Electric) and the label with pump control adjustment details. [Click to enlarge].
Here are Example Pump Pressure Switch Adjustment Instructions from Square -D Understanding how pump pressure control switches work and which way to turn which of the two nuts in the control can be confusing.
On a Square-D Pumptrol® 9013FSF-2 pump pressure switch, for example, Square D tells us that we
  • Turn the Range Nut #1 (the larger spring and nut) clockwise (to the right or "down") to raise [both] cut-on and cut-off pressures. This is "tightening the nut down" against the spring. ("Rightie-tightie, leftie-loosie" as Mara Gieseke says to her kids). Thanks to reader Rise for this clarification.

    In other words, adjusting the pressure on this spring shifts the whole operating range of the switch up or down, but keeps the difference between cut-in and cut-out the same, whatever it happens to be (typically it's about 20 psi from the factory.)

    If you want the pump to turn ON (cut-in) sooner
    , that is, at a higher water pressure, turn the nut clockwise or "tighter".

    If you want the water pump to turn ON (cut-in) later, that is, at a lower water pressure, turn the nut counterclockwise or "looser".

  • Turn the Differential Nut #2 (the smaller spring and nut) clockwise to raise the cut-out pressure.

    If you want the water pump to turn OFF (cut out or cut-off) at a higher water pressure, turn this nut clockwise or "tighter".

    If you want the water pump to turn OFF (cut out or cut-off) at a lower water pressure, turn this nut counter clockwise or "looser"

    Here is why the small nut is called the "Differential"
Keep reading at LINK

Nov 03, 2010 | Flotec TC2151 P2 Well Pump Pressure Switch

1 Answer

No water from drilled well, intermittent.


1-If everything has been replaced can you turn water off and check air pressure in the water storage tank. the bladder may be leaking and causing it to work some. A 40 gal tank should have about 28 psi of air in it. Also you can press on valve at top of tank to see if any water comes out will let you know if it's bad. Air should come out at top and no sign of water from valve on tank..

2-When you changed pumps did you replace the check valve in top of pump. Some pumps I have had to pull back up and add a check valve to pump.

Most pumps have a check valve on top with a retaining clip holding it in. And they work sometimes and some have to be removed and add a brass check to pump and connect to water pipe.

May 19, 2010 | Plumbing Pumps

1 Answer

Why is the pump cutting in so much


Check your water pressure tank air pressure, turn off pump, drain off all water pressure and using a air pressure gauge check pressure at the schrader valve on the water pressure tank. It should be 2 lbs below pump cut-in pressure, they come factory charged at 30 PSI...works for most residential systems. Most likely you have a bad bladder in pressure tank.

Other possibles are a broken line between pump and pressure switch/pressure tank or bad pressure switch.If you have a pressure gauge on the water system(should have one near pressure switch) see if it is cycling at the right points if it is the switch is good. If pressure is dropping with NO water uasge in house you have a leak.

Most likely a bad pressure tank bladder is the problem.

Oct 24, 2009 | Jet Plumbing Pumps

1 Answer

Jet pump is cuting in and out rapidly during


check your seals may be pulling air in

Oct 12, 2009 | Plumbing Pumps

1 Answer

I have a model C48A93A06 1/2 horse power pump motor and it pumps water fine,but, it will get within 2lbs of the cut off pressure and just sit there and run and will not cut off unless I bump the pressure...


I would check the holding tank pressure, if you have one with a bladder. Turn electric off to the pump, and drain all water from the tank. Take a tire pressure gauge and check the tank pressure at the air valve on top of the tank. That pressure should be two lbs less than your cut-on pressure. If the cut-on pressure is 20 lbs, then the tank pressure should be at 18 lbs. If there's too much pressure in the tank, it wont let the pressure switch work correctly. If you get water from that air valve, then the bladder is ruptured, and a new tank is needed.
I hope this works for you!

Aug 09, 2009 | Plumbing Pumps

1 Answer

I have a flotec water pump that sits on top of my pressure tank, pump worked ok last season, and when we tried to prime the pump to start this season, it wont pull water up from the well pipe, pump will...


if the pump is working correctly, it can either be, need more water to prime it, or something in the well, such as low water, plugged filter, etc....sometimes when you have a system that is intermittently used, it can take 20 or 30 minutes of continuous priming to get it to pull, enough water to maintain the prime.

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