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Old 10-11-2014, 01:00 PM   #1
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fresh water tank overflowing

Recently, my fresh water tank has been filling up "on its own" . I have reduced flow from the city water line which must be where water is coming from, but don't know what other steps to take to correct. The water drains out the overflow opening. Any suggestions?
ec
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Old 10-11-2014, 01:03 PM   #2
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Your check valve in water pump is leaking. Close city water supply, start your water pump and let run water a few minutes, hopefully check valve will reseal. Stop water pump and open city water and check.....

check valve ?
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Old 10-11-2014, 01:20 PM   #3
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Thank you

I did that last week, but will try again today. I also read your check valve thread and will have pump checked out if this doesn't clear up.
Many thanks,
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Old 10-12-2014, 02:58 PM   #4
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Had the same problem on my Lexington. My solution was if we had been using the pump (on the road), the wife shuts the pump off, opens the vanity hot and cold faucet to relieve the pressure fully, turns the faucet off, THEN I turn on the city water. This sequence insures the check ball does not lock either side pressue in the system.
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Old 10-12-2014, 03:07 PM   #5
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Quote:
Originally Posted by popbreed View Post
Had the same problem on my Lexington. My solution was if we had been using the pump (on the road), the wife shuts the pump off, opens the vanity hot and cold faucet to relieve the pressure fully, turns the faucet off, THEN I turn on the city water. This sequence insures the check ball does not lock either side pressue in the system.
X2 on your solution.
Never turn on the 12 VDC water pump when hooked up to city water or this will happen.
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Old 10-12-2014, 04:49 PM   #6
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These suggestions should reset the pump backflow membrane but if it doesn't set the winterization valve to the winterization position and cap the winterization tube and that will at least prevent your holding tank from filling via the city water input.
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Old 10-12-2014, 05:02 PM   #7
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Thank you

I will try these suggestions. So appreciate your assistance.
ec
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Old 10-12-2014, 05:29 PM   #8
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fresh water tank overflowing

Quote:
Originally Posted by bubbles View Post
These suggestions should reset the pump backflow membrane but if it doesn't set the winterization valve to the winterization position and cap the winterization tube and that will at least prevent your holding tank from filling via the city water input.

The only problem with using the winterization valve is you may over pressurize the pump suction side and the strainer. This IAW Shurflo website. This has happened to me so often(backflo) I'm installing a cutout cable at the discharge.


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Make that cutout cable a valve instead.
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Old 10-23-2014, 01:59 PM   #9
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X2 on your solution.
Never turn on the 12 VDC water pump when hooked up to city water or this will happen.
pump valve issue is resolved, but now have little water pressure inside at all faucets. Have been told to check fresh water tank shut off valve, but can't locate it. Any suggestions for me?
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