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Old 02-18-2015, 04:17 PM   #15
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Thanks for all the replies. I'll keep an eye on it to see if I have a problem with it in the summer when I can turn off the water heater at night and not have to worry about freezing.

So far I have yet to see any leaks on the ground or in any of the plumbing, so I am not going to worry about it at this point.

I think I might upgrade the water pump at a later date. Mine seems to be really noisy. I have heard a few say that a better quality pump can be used that runs quiet.
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Old 02-18-2015, 04:48 PM   #16
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Might think about a small pressure accumulator tank to help hold pressure up. We have a tankless water heater snow and the pump short-cycles a bit more now. Once I get the accumulator (Sureflow) installed it should work better.


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Old 02-18-2015, 04:57 PM   #17
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I only turn the pump on when we need water, am in the trailer and not asleep.


And this is why....cross threaded at assembly, sprung at the campground third time out with nobody home, luckily most of the water drained outside between the axles.
Under the bathroom sink....

Emergency Marine-Tex repair is still intact.

I used these to isolate the pump....much less vibration.


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Old 02-18-2015, 05:42 PM   #18
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We turn the pump on when we want water and turn it off when we are finished. Every time. We never leave the pump on.
I installed a switch in the bathroom parallel to the one in the galley. We can turn the pump on and off from either location.


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Old 02-19-2015, 12:08 PM   #19
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I bought two 2013 Airstreams within about six months of each other. Both had some minor leaks in the exact same spots. They were always at the hand-tightened fittings on the water pump, water filter, hot water heater, etc. Once I tightened those fittings, I have had no further leaks.

Air will leak out places that water will not. A practical illustration of that is your GoreTex raincoat. Additionally, new installations of municipal water systems are tested with air pressure before they are charged with water. They are never expected to hold air pressure. Instead, they are tested and measured by an "acceptable" drop in air pressure over a given period of time.

As "Mojo" mentioned, temperature changes will effect the water pressure. So will altitude and barometric changes. Any of these could cause your pump to run. Most leaks will become obvious at some point. It sounds to me like you are on the right track by checking for drips or puddles. As some of the other folks have said, I think it is a good idea to turn the water pump off away from the trailer or when sleeping. This is absolutely important when moving the trailer.

Enjoy your adventures!
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Old 02-19-2015, 12:12 PM   #20
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Quote:
Originally Posted by ROBERT CROSS View Post
I used these to isolate the pump....much less vibration.

Bob
Alright Bob, where'd you get 'em? Big box? I would seriously like to give that a try.

-Red, wheels are turnin'...
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Old 02-19-2015, 12:30 PM   #21
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Putting in an accumulator, an isolation pad (closed cell packing material about an inch or so thick) under the pump and some pipe insulation helped a lot with the noise in our trailer.
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Old 02-19-2015, 12:35 PM   #22
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Enough has been said about possibilities, I would check many locations for a possible water leak and if none found, then follow up about the other possibilities addressed by other posts. My experience has been a slow water leak, any leak for me is not good and I address the leak immediately. Good luck
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Old 02-21-2015, 12:35 PM   #23
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Good ideas on the pumps.
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Old 02-21-2015, 01:42 PM   #24
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Our 23' FB Int'l Serenity had the exact same issue. Took it to Jackson Center and they confirmed that there was a problem but they couldn't find the leak. Drove me crazy to hear it kick on for no apparent reason. What you have described sounds like a leak somewhere to me and I would keep after it until resolved.

Good luck!

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Old 02-21-2015, 02:20 PM   #25
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Ranger Jay nailed it earlier. More than likely it's just minor leakage of the check valve in the pump, which would allow enough water to leak past, back into the tank, to kick the pump back on to build up pressure. I've yet to see an RV that the pump didn't kick on sometime in a days span... Look for leaks, if you can't find water, I wouldn't worry about it. Mine will come on about once every four hours. I know for a fact there are no leaks, because I can see every inch of the pressurized system... Has to be the check valve.

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Old 02-21-2015, 06:13 PM   #26
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I am a firm believer in turning the pump OFF when not in use.


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Old 02-21-2015, 06:44 PM   #27
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I turn the pump off when not using it. It's nice to not hear it when I turn it back on before turning the water faucet on, tho.
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Old 02-21-2015, 10:08 PM   #28
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The air bubble trapped in the top of the water heater tank expands a lot more than the water as they are both heated. As that air cools it might shrink enough to allow the pump to cycle and re-pressurize.
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