pump won't start running
#1
07-18-11, 11:46 AM
pump won't start running
I just discovered that my deep well pump keeps running. I checked my pressure switch and it was sticking, so i replaced it with a new one, but my pump is still running. My water pressure in my home is low, any suggestions to what i should check next ?
#2
07-18-11, 04:55 PM
Group Moderator
Is the new pressure switch clicking to the "off" position? If the pressure in the system never gets up to the switches cut-off pressure the switch will continue to tell the pump to keep running.
Have you checked for leaks? Did you have low water pressure before you replaced the pressure switch?
Have you checked for leaks? Did you have low water pressure before you replaced the pressure switch?
#5
07-20-11, 04:44 PM
I replaced the pressure gauge and the water pressure is holding at 20 psi when nothing is on, when i turn on a tap or flush the toilet it goes down to 12 to 15 psi. On my pressure switch cover it says cut on 20psi cut off 40 psi. My pressure tank seems to be empty, no water in it at all. I put a tire gauge on the air valve and it reads 18 psi. My pump only turns off when I turn off the breaker.What should i check next ? I took the cover off my well and I can hear a humming noise, must be my pump. it is a deep well pump 1/2 hp 3 wire design, can't find any leaks in the lines
#6
07-20-11, 04:51 PM
Super Moderator
Turn off the breaker when the pump reaches 20 psi. Then watch the gauge. Does it lose pressure?
Post back if it does.
The pump may have an issue if you dont lose pressure and you should test it. High voltage so be careful.
Post what you find back here.
TESTING SUBMERSIBLE PUMP MOTORS
Mike NJ
Post back if it does.
The pump may have an issue if you dont lose pressure and you should test it. High voltage so be careful.
Post what you find back here.
TESTING SUBMERSIBLE PUMP MOTORS
Mike NJ
#8
07-20-11, 08:42 PM
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The pump itself is failing, or the drop pipe has a hole in it.
If the is a plug or something that can be removed easily at the top of the well.
Have someone turn the power off, then quickly remove the plug or something on top of the well, then put your hand over the the hole where you just removed the (plug) it will suck your hand against the pipe., and
if the water falls back down the well real fast you more than likely have a hole in the drop pipe.
If the water does not fall fast or pull a suction on your hand.
The pump itself is bad.
If the is a plug or something that can be removed easily at the top of the well.
Have someone turn the power off, then quickly remove the plug or something on top of the well, then put your hand over the the hole where you just removed the (plug) it will suck your hand against the pipe., and
if the water falls back down the well real fast you more than likely have a hole in the drop pipe.
If the water does not fall fast or pull a suction on your hand.
The pump itself is bad.
#10
07-21-11, 08:57 AM
Super Moderator
Why dont you test the pump properly before just changing things.
TESTING SUBMERSIBLE PUMP MOTORS
Mike NJ
TESTING SUBMERSIBLE PUMP MOTORS
Mike NJ
#11
07-21-11, 11:15 AM
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The motor runs.
The pump-end or wet-end is the problem.
The only test for that is see how much water is being pump out vs. the amount its made to pump.
You already know it will only build 22psi. There are only two things that will cause this.
1. a hole in the drop pipe.
2. a bad pump end.
Low voltage on a submersible pump, it will not run. If it does, it will build up heat and shut the motor off.
When you are doing these test, Is the water trapped in the tank?
Is the valve shut so no water can get out of the tank?
The pump-end or wet-end is the problem.
The only test for that is see how much water is being pump out vs. the amount its made to pump.
You already know it will only build 22psi. There are only two things that will cause this.
1. a hole in the drop pipe.
2. a bad pump end.
Low voltage on a submersible pump, it will not run. If it does, it will build up heat and shut the motor off.
When you are doing these test, Is the water trapped in the tank?
Is the valve shut so no water can get out of the tank?
#12
07-21-11, 02:21 PM
Super Moderator
Just suggest some other issues that may cause the pump not to shut off.
A low-water tailpiece installed to protect a submersible pump from burnup. This could be with low well yeild or during drought. Turn the pump off for a while. When you start it does it act normally for a while?
The pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures.
Mike NJ
A low-water tailpiece installed to protect a submersible pump from burnup. This could be with low well yeild or during drought. Turn the pump off for a while. When you start it does it act normally for a while?
The pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures.
Mike NJ
#13
07-21-11, 02:44 PM
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Originally Posted by lawrosa
This could be with low well yeild or during drought. Turn the pump off for a while. When you start it does it act normally for a while?
The pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures.
Mike NJ
The pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures.
Mike NJ
This would be something to try. Try letting it sit for about an hour or so, and see what happens.
If it does the same thing.
It does not look good for your pump..
