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Subject Author Date
Goulds water pump excessive cycling Eric Scantlebury 02-05-2008
---> Update on problem Eric Scantlebur...02-06-2008
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Posted by RBM on February 5, 2008, 10:09 pm
I'm suspecting the tank too. Sounds waterlogged



> Hello All,
>
> I have an issue with my goulds well pump recently cycling on and off in an
> excessive mannor. By excessive I mean the pump will kick on and off
> several times a minute while water is being used in the house.
>
> The specifics: I have a 1/2 horse power goulds Jet water pump model J5S
> installed in my basement that is pulling water from a point in my front
> yard (no well). This pump feeds a Wellmate WM-6 bladder water tank. The
> pump is around 4 years old and the tank is around 10.
>
> I think the pump is working fine as when an upstream valve is turned on
> the preasure gauge on the pump falls like a rock from 60lbs to 40lbs
> kicking the pump on which makes the preasure fly like a rocket back up to
> 60lbs kicking the pump back off. This then repeats over and over. The
> manual for the pump indicates 4 things may cause this. 1 - a bad foot
> valve (I don't think this is the case as the pump holds preasure when not
> in use). 2 - the pump is more than 5 feet from the water tank (it is 2
> feet away). 3 - there is a valve between the pump and water tank causing
> resistance (there is no valve placed there) and 4 - a waterlogged water
> tank.
>
> Ok - I also have had the service panel in my house upgraded one week ago
> so power was off to the whole house for about 5 hours last wednessday.
> Yesterday I ran a new line to the pump so had power off to that for an
> hour. I don't think that rewiring the pump could have caused this but I
> throw it out there as a coincidental thing anyway.
>
> Anyone have any ideas as to what may be happening? I'm suspecting
> something with the tank but I'm open to expert opinions.
>
> TIA
>



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Posted by Eric Scantlebury on February 5, 2008, 10:26 pm

> I'm suspecting the tank too. Sounds waterlogged

Right, I sort of agree just trying to figure out how to test for that with a
tank that has a bladder. Ideas?



Posted by dpb on February 5, 2008, 10:39 pm
Eric Scantlebury wrote:
>> I'm suspecting the tank too. Sounds waterlogged
>
> Right, I sort of agree just trying to figure out how to test for that with a
> tank that has a bladder. Ideas?

Drain the tank entirely. If it's waterlogged, you'll be able to tell it
from the weight left in the tank from the water and the air pressure
will still be higher than it should be which normally would be 2-lb
below the cut in pressure.

If the leak isn't too bad, reset to the proper pressure and it will give
you a fair period of time before it gets excessively waterlogged again,
but a new tank is in your future sooner than later.

If you can do w/o water for a period, you can try to pressurized the air
side by a few pounds over the setpoint and see if that will force a
small amount of the water back across the barrier. This works better
for diaphragms than bladders, but sometimes can help. Needs a long time
for it to manage to make any real difference, however, unless the hole
is quite sizable, in which case the time of satisfactory operation will
be measured in days at best rather than weeks before the exercise must
be repeated.

--

Posted by Bubba on February 6, 2008, 12:01 pm
On Tue, 5 Feb 2008 22:26:02 -0500, "Eric Scantlebury"

>
>> I'm suspecting the tank too. Sounds waterlogged
>
>Right, I sort of agree just trying to figure out how to test for that with a
>tank that has a bladder. Ideas?
>

Usually, but not always, if the bladder is leaking you will get water
coming out of the precharge port when you push on it. Also, if you
press on that port to test it and you get no water but some really
foul smelling odor, you can pretty much consider the tank toast. Its
hard to describe the smell. It is just a really foul nasty smelling
rot.
If all that doesnt help, unscrew the tank from the boiler and visually
check it and test it for water and/or air. If there is no valve to
shut off the system to keep water from coming out, then drain the
system first. When you reinstall the tank, make sure you add a shut
off valve for the next time.
Bubba

Posted by dpb on February 6, 2008, 2:01 pm
Bubba wrote:
...
> If all that doesnt help, unscrew the tank from the boiler ...

???

This is a potable water system pressure tank, not a heating system...

--

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