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Old 05-23-2017, 07:39 AM   #1
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Fresh water tank issue

We are on our second season with our 2016 27rlws which we love. We have been on the road for a month & 1/2. For the second time this past week our fresh water tank fills up when we are on "city water". It does not appear to happen all at once. It happened over a period of time. Any thoughts on this subject.
Larry M.
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Old 05-23-2017, 08:03 AM   #2
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Very common problem. The solution usually is.
Disconnect city water
Turn on faucet to relieve pressure.
Turn on water pump
run water for 30 seconds.
Turn off faucet and allow water pump to run until it stops
Turn off water pump
reconnect city water.

If you run the water pump when on city water, the reverse flow valve can seat incorrectly and allow water to back flow into the tank.
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Old 05-23-2017, 08:06 AM   #3
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X2 what Flybob said. Let the forum know if it works
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Old 05-23-2017, 09:01 AM   #4
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Fresh Water tank issue

Sea Dog,
Thank you for your reply. We are on the road & will probably dry camp tonight. Staying at a campground Wed & Thurs., will advise results
Larry M.
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Old 06-14-2017, 07:51 PM   #5
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Fresh water tank problem

Sea Dog & FlyBob,
Your suggestion worked well. Problem solved. Issues on the home front prevented me from tying your remedy earlier. Thank you guys so much.
Lorocon158
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Old 06-20-2017, 06:59 AM   #6
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One more question - is it proper

When I dry camp - I fill my fresh water tank upon entrance to the camp.

When I leave and dump my black and grey water tanks - I open my fresh water valve to drain.

It sometimes takes a while to empty, so I drive off with the fresh water tank slowly draining.

Is this proper?

The DW has a fit but I don't want to just sit at the dump station until it drains.

I only have a 30 gallon fresh water tank but depending on how much water is left at the end of camping it could take a while.

Thanks
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Old 06-20-2017, 07:04 AM   #7
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I've heard that discharging anything, even water, is illegal most places, but I've always done it and have never had a problem. lol if I do ever get pulled over or otherwise called on it, I plan on pleading ignorance. It's only water...
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Old 06-20-2017, 07:11 AM   #8
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I drain mine at the camp site down to 1/4 tank and keep that for the drive home or where ever you never know when you will need some water for an emergency flush or your radiator
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Old 06-20-2017, 07:17 AM   #9
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I also drain mine when I remember to do it! It sloshes around and empties more completely. I've heard folks here say a ranger or police might stop you if they saw it and I can understand that. They don't know it's fresh water.
Some folks might try to be sneaky and crack the gray water on the way home or maybe it's a leaky pipe....

I do it and I takes my chances! Last trip it was raining on the way home so I was pretty confident I wouldn't get caught!
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Old 06-20-2017, 07:36 AM   #10
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Interesting discussion. I've never drained FW tank, I guess because I'd never thought of it, but it certainly makes sense. Our boat has access panels on FW tanks that allows them to be cleaned; not so the rv, and the scuz in the filter indicates that things may be growing in there.
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Old 06-28-2017, 11:54 AM   #11
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When leaving a campground, I usually add a cup of bleach to the freshwater tank if I know I won't be using it on the road. let it slosh around and then after my first fuel stop , I open the fresh water drain to let it empty on the way. By the time I get home it's sanitized and dry ready for the next trip. Every once in awhile I will run some if the bleach water through the lines to sanitize he tank and lines and open all release valves to empty lie points an he.
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