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Old 09-28-2020, 09:16 AM   #1
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Water pressure drops off quickly.

Need help with this one.
Fresh tank is full, pump comes up to full pressure in a minute.
It does not prime overnight. So no leaks.
But when you turn on any tap, water runs full for 5-10 seconds then just dribbles, turn off tap, the pump kicks in and takes a minute, until it pressures up again??
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Old 09-28-2020, 09:29 AM   #2
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Does your water system have a pressure accumulator? Check that. They have a rubber bladder and the bladder can become stiff or develop a leak.

Then the water pump has a pressure sensor that might be bad. You might try removing the pump, cleaning it up, taking the cover off and checking things inside. Clean up where necessary.

It could also be something as simple as your shore/tank water valve leaking by and sending some water to the tank every time. That would account for the pump running on.

Good luck.
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Old 09-28-2020, 09:54 AM   #3
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Pump should kick on within just a few seconds of opening a faucet

As suggested above
Got an accumulator tank...then air pressure is set to high (should be 3# above pump start pressure set point) or bladder between air & water chambers is bad

No accumulator tank...then pump pressure switch is hanging up or set way to low

Which Pump (Brand/MODEL) do you have?
45# pump...start pressure s/b 30#
55# pump...start pressure s/b 40#
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Old 09-28-2020, 11:34 AM   #4
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Quote:
Originally Posted by Old-Biscuit View Post
Pump should kick on within just a few seconds of opening a faucet

As suggested above
Got an accumulator tank...then air pressure is set to high (should be 3# above pump start pressure set point) or bladder between air & water chambers is bad

No accumulator tank...then pump pressure switch is hanging up or set way to low

Which Pump (Brand/MODEL) do you have?
45# pump...start pressure s/b 30#
55# pump...start pressure s/b 40#


Actually, the tank pressure should be 2-3 psi BELOW the cut-in pressure of the pump. Otherwise, the tank forces all the water out of the reservoir before the pump starts to run, and you’ll get an annoying interruption of flow each time the pump cycles.
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Old 09-28-2020, 11:50 AM   #5
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Originally Posted by Bsipe01 View Post
Actually, the tank pressure should be 2-3 psi BELOW the cut-in pressure of the pump. Otherwise, the tank forces all the water out of the reservoir before the pump starts to run, and you’ll get an annoying interruption of flow each time the pump cycles.
YEP....
Had my hat on backwards!
Thanks for the clarification...much appreciated

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