water pressure issue

[George Braun]

question for the group. Spent the long weekend on the water with guests on board., so more water used than normal. Our water pressure pump now suddenly takes a significantly longer time to stop after any outlet is closed. Galley, Head, stern shower, it doesn't matter which is used, pump runs a longish time after water is stopped. No evidence of leaks anywhere currently accessible. Haven't yet had an opportunity to do anything but check for obvious leaks, no joy there. Ideas? Would a clogged filter at the pump do it? Jabsco Par-Max 2.9 pump in a 2008 H36. No idea if original or replacement.

 

[Davidasailor26]

Is the flow rate when the pump is running still about the same? If not I’d check for a clogged filter. Also, do you have a pressure accumulator? If the pressure inside that leaked out it could cause the pump to run longer.

 

[jssailem]

1. more water used than normal. Our water pressure pump now suddenly takes a significantly longer time to stop after any outlet is closed.
2. No evidence of leaks anywhere currently accessible... obvious leaks, no joy there

YEAH... No obvious leaks. Be Joyful...
You have a water system. Water does not compress. Air compresses. You started with lots of water in a closed system. You took out, let's say, 50%, during your cruise. It makes sense that the pump, which is an air pump, needs to compress the new volume for a longer period than it did when the water system was full.

If the air pump never stops, then look for a water leak or refill the tank. If it runs, then stops, then runs again, look for a little leak (either air or water). If the pump stops and the water flow from one faucet is a dribble, but the others seem fine, inspect the dribbling faucet for a clog. If water only dribbles out of all faucets, then look to the pump filter for a clog.

 

[Don S/V ILLusion]

Do you have an accumulator tank in your system?

 

[Johnb]

Fill your tank and if it takes a shorter time then it was taking longer because water was not flowing into the suction side of the pump as fast as before.

If it stops at all you don't have a leak.

 

[seadaddler]

Screens clogged at where lines go into water heater and. That what did and the screens needed cleaning and all good now H-36 07

 

[artboas]

YEAH... No obvious leaks. Be Joyful...
You have a water system. Water does not compress. Air compresses. You started with lots of water in a closed system. You took out, let's say, 50%, during your cruise. It makes sense that the pump, which is an air pump, needs to compress the new volume for a longer period than it did when the water system was full.

If the air pump never stops, then look for a water leak or refill the tank. If it runs, then stops, then runs again, look for a little leak (either air or water). If the pump stops and the water flow from one faucet is a dribble, but the others seem fine, inspect the dribbling faucet for a clog. If water only dribbles out of all faucets, then look to the pump filter for a clog.

Respectfully, this isn’t correct.
The tanks are on the inlet to the pump. The tank outlets are on the bottom of the tanks, and the pump never sees air until the tanks are empty.
Your pump will run the same way feeding from a bucket, or 3 full tanks
The problem here is possibly the pressure switch. They typically have an adjustment screw on them, and they need to be tweaked from time to time

 

[colemj]

When ours starts to take longer to pressurize, it is always the household filter on the pump outlet needs changing. There is no noticeable change in flow at faucets at this time, or after changing the filter, but the problem always stops. Do you have a filter on the outlet? It could also be a clogged inlet filter, but this is normally just a course screen to catch junk in the tank, and usually doesn't clog.

Mark