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Home Repair - - If it ain't broken, don't fix it. Otherwise look here.
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Posted by Shy Picker on May 14, 2009, 2:49 pm
On May 14, 12:45=A0pm, gfretw...@aol.com wrote:
show/hide quoted text
> wrote:
> >Having a bit of trouble with my water pump not shutting off. Usually
> >when this happens I just have to pump a bit of air in the bladder and
> >it works fine for many months but this time that trick is not working.
> >I can get it to stop by shutting it off at the circuit breaker for
> >about 10 seconds and then turn the breaker back on and the pump stays
> >shut off until I run enough water for it to kick back on.
> >Also, I'm running on generator power today because the storm knocked
> >out power out last night. It has not been a problem before but it
> >still makes me wonder if it has something to do with it or if it is
> >just a coincidence.
> >It was probably about 20 years ago when I installed this pump. Looks
> >like it is way past it's prime and might be time for a new one.
> >David
> What is the cut out pressure set at? What is it when it is still
> running?
> You might just have a bad pressure switch or the pump might be worn to
> the point that it can't make the switch setting. The answer is
> watching the gauge when it fails.
> Try backing off on the cut out pressure a couple pounds.
Yep. Lowering the shut off pressure did the trick for now. I am not
sure if the problem is totally in the switch or if the pump is wearing
out and can not get the pressure up to normal switch operation. The
switch is a 30 - 50 switch. I think I will just keep an eye on it and
probably replace the switch this weekend to see if it will shut off at
normal pressure.
Thanks, David
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Posted by fftt on May 14, 2009, 12:48 pm
show/hide quoted text
> Having a bit of trouble with my water pump not shutting off. Usually
> when this happens I just have to pump a bit of air in the bladder and
> it works fine for many months but this time that trick is not working.
> I can get it to stop by shutting it off at the circuit breaker for
> about 10 seconds and then turn the breaker back on and the pump stays
> shut off until I run enough water for it to kick back on.
> Also, I'm running on generator power today because the storm knocked
> out power out last night. It has not been a problem before but it
> still makes me wonder if it has something to do with it or if it is
> just a coincidence.
> It was probably about 20 years ago when I installed this pump. Looks
> like it is way past it's prime and might be time for a new one.
> David
Just a bit of guessing but I'm thinking that your water pump system is
not unlike an air compressor system.
When pressure falls below the "low pressure - pump on" limit...the
switch contacts close and the pump turns on.
When the pressure reaches the "high pressure - pump off" ......the
switch contacts open and the pump turns off.
By turning off power at the breaker, you are killing the cycle until
the pressure fails again to the "turn - on" limit.
It appears that the contacts are remaining closed.
Do you have a seperate "electrical control box" on or near the pump
(motor)?
Unless the whole system is a single unit and the controls are not
separately serviceable you should be able to just fix or replace the
pressure switching part of it.
If pressure builds to "normal" operating pressure (& it seems like it
does since you topped off the air tank) then the fault is most likely
in the switch.
cheers
Bob
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Posted by Shy Picker on May 14, 2009, 2:51 pm
show/hide quoted text
> > Having a bit of trouble with my water pump not shutting off. Usually
> > when this happens I just have to pump a bit of air in the bladder and
> > it works fine for many months but this time that trick is not working.
> > I can get it to stop by shutting it off at the circuit breaker for
> > about 10 seconds and then turn the breaker back on and the pump stays
> > shut off until I run enough water for it to kick back on.
> > Also, I'm running on generator power today because the storm knocked
> > out power out last night. It has not been a problem before but it
> > still makes me wonder if it has something to do with it or if it is
> > just a coincidence.
> > It was probably about 20 years ago when I installed this pump. Looks
> > like it is way past it's prime and might be time for a new one.
> > David
> Just a bit of guessing but I'm thinking that your water pump system is
> not unlike an air compressor system.
> When pressure falls below the "low pressure - pump on" limit...the
> switch contacts close and the pump turns on.
> When the pressure reaches the "high pressure - pump off" ......the
> switch contacts open and the pump turns off.
> By turning off power at the breaker, you are killing the cycle until
> the pressure fails again to the "turn - on" limit.
> =A0It appears that the contacts are remaining closed.
> Do you have a seperate "electrical control box" =A0on or near the pump
> (motor)?
> Unless the whole system is a single unit and the controls are not
> separately serviceable you should be able to just fix or replace the
> pressure switching part of it.
> If pressure builds to "normal" operating pressure (& it seems like it
> does since you topped off the air tank) =A0then the fault is most likely
> in the switch.
> cheers
> Bob
Thanks Bob.
Looks like at least part of the problem is in the switch. I have it
working now and will replace the switch this weekend (or sooner if
problems crop back up)
Thanks, David
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> >Having a bit of trouble with my water pump not shutting off. Usually
> >when this happens I just have to pump a bit of air in the bladder and
> >it works fine for many months but this time that trick is not working.
> >I can get it to stop by shutting it off at the circuit breaker for
> >about 10 seconds and then turn the breaker back on and the pump stays
> >shut off until I run enough water for it to kick back on.
> >Also, I'm running on generator power today because the storm knocked
> >out power out last night. It has not been a problem before but it
> >still makes me wonder if it has something to do with it or if it is
> >just a coincidence.
> >It was probably about 20 years ago when I installed this pump. Looks
> >like it is way past it's prime and might be time for a new one.
> >David
> What is the cut out pressure set at? What is it when it is still
> running?
> You might just have a bad pressure switch or the pump might be worn to
> the point that it can't make the switch setting. The answer is
> watching the gauge when it fails.
> Try backing off on the cut out pressure a couple pounds.