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Old 04-01-2016, 20:18   #1
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Freshwater system leak

My fresh water pump cycles on to build pressure ever 10 mins or so. I am assuming that I have a leak somewhere past the pump. I have not yet been able to find it. 2 water tanks lead to the pump. I have one pump, that also somehow runs the hot water tank too. I did find one leak at the hot water thank that I fixed. Seems better but not yet fixed.

tips tricks suggestions welcomed.
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Old 04-01-2016, 20:46   #2
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Re: Freshwater system leak

Depending on the pump style, the pump may just be bleeding back the pressure, through it's valves. if you don't see any water externally any where, you probably have internal bleed back. Jabsco piston style pumps do this some times if there is debris, stopping the valve discs from seating properly!
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Old 04-01-2016, 21:43   #3
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Re: Freshwater system leak

I agree with Mike. You could add a one-way valve after the pump to prevent backflow.
If you put in a valve (manual) after the pump then you could at least close it when the pump shuts off and wait to see if your pressure drops. That would be more work but cheaper to at least test if the pump is the problem.
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Old 04-01-2016, 22:00   #4
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Re: Freshwater system leak

I agree with Mike. If you don't see water leaking, chances are the valves in the pump are bad. Replace them.
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Old 04-01-2016, 22:33   #5
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Re: Freshwater system leak

thank you all for the input!
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Old 04-01-2016, 22:55   #6
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Re: Freshwater system leak

mine did that-- got it rebuilt, is perfect
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Old 29-02-2016, 17:12   #7
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Re: Freshwater system leak

FINALLY replaced the pump, and woo hoo no cycling of the pump every 15 mins!!!! Some weirdness... turns out the old pump was also a 24 Volt pump in a 12V system????!!!!?!?!?! Now onto the next project... just have to decide what that will be.
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