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03-18-2019, 01:28 PM
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#41
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4 Rivet Member
2019 27' Globetrotter
2023 30' Classic
Denver
, North Carolina
Join Date: Jan 2018
Posts: 278
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Quote:
Originally Posted by Bobbo
We turn ours off when not in use too. However, when we turn it back on a few hours later, it should not immediately activate the pump. It should hold water pressure.
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Mine does the same after its been off for a few hours, assumed this was normal. The pump only stays on for a couple of seconds though.
Is anyone able to turn there pump off for a few hours and not have it come on momentarily?
Dave S
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03-18-2019, 01:37 PM
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#42
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Rivet Master
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
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Ours stays quiet for hours and hours when running on fresh water tank. I’ve had no issues with leaks or backflow into the fresh tank (yet. I’m not going to bet that will be the situation forever. Stuff breaks. )
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
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03-18-2019, 02:20 PM
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#43
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Quote:
Originally Posted by link2dks
. . .
Is anyone able to turn there pump off for a few hours and not have it come on momentarily?
. . .
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Yes, that is the textbook standard operation. If we forget to turn the pump off, the system makes it through the night without the pump coming on, or at least until the first flush.
If we turn the pump off, and leave the system with pressure in the lines, even a week later there is plenty of pressure [from the air head in the water heater] to get some flow out of a faucet.
In other words, the plumbing system is designed to be completely watertight.
Peter
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03-18-2019, 08:35 PM
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#44
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Rivet Master
2017 23' Flying Cloud
Bartlett
, Tennessee
Join Date: Apr 2017
Posts: 1,055
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Quote:
Originally Posted by link2dks
Mine does the same after its been off for a few hours, assumed this was normal. The pump only stays on for a couple of seconds though.
Is anyone able to turn there pump off for a few hours and not have it come on momentarily?
Dave S
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I had a Winnebago Class C for 10 years. I could pressurize the system, turn the pump off, and leave it for a month. When I turned the pump back on, it would not activate the pump. The Winnebago held the water pressure. I did that on a regular basis if we went a month between camping trips.
__________________
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab 3.5l EcoBoost V6
2017 Flying Cloud 23FB "BobLin Along"
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03-19-2019, 07:43 AM
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#45
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4 Rivet Member
2019 27' Globetrotter
2023 30' Classic
Denver
, North Carolina
Join Date: Jan 2018
Posts: 278
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OK, thanks. Another issue to add to the list!
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03-19-2019, 03:09 PM
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#46
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4 Rivet Member
2018 28' Flying Cloud
Clayton
, Georgia
Join Date: Jul 2017
Posts: 400
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Quote:
Originally Posted by Bobbo
I had a Winnebago Class C for 10 years. I could pressurize the system, turn the pump off, and leave it for a month. When I turned the pump back on, it would not activate the pump. The Winnebago held the water pressure. I did that on a regular basis if we went a month between camping trips.
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I wonder if your Winnebago had a water pressure accumulator, which the OP's Airstream does not.
See https://goneoutdoors.com/rv-pump-acc...n-5984303.html
and
http://www.rialtainfo.com/winnebago/...remiumPump.pdf
__________________
Erik & Carol
Clayton, Georgia
AS: 2018 Flying Cloud 28 "Baby Zeppelin"
TV: 2017 Ford F250 Lariat w/ Blue Ox Sway Pro
AIRForums #126944 WBCCI #1297
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03-19-2019, 03:33 PM
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#47
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Rivet Master
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
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If the OP has a standard water heater with a proper air bubble in it, that acts like a pressure accumulator
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
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03-19-2019, 07:26 PM
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#48
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Rivet Master
2017 23' Flying Cloud
Bartlett
, Tennessee
Join Date: Apr 2017
Posts: 1,055
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Quote:
Originally Posted by Baby Zeppelin
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Uhhhh, I AM the OP. And, no, the Winnebago did not have an accumulator tank.
__________________
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab 3.5l EcoBoost V6
2017 Flying Cloud 23FB "BobLin Along"
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03-19-2019, 07:32 PM
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#49
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Quote:
Originally Posted by rmkrum
If the OP has a standard water heater with a proper air bubble in it, that acts like a pressure accumulator
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Echoing earlier post:
Quote:
Originally Posted by OTRA15
. . .
If we turn the pump off, and leave the system with pressure in the lines, even a week later there is plenty of pressure [from the air head in the water heater] to get some flow out of a faucet.
. . .
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Does anyone here read all the posts carefully any more? [not directed at you Rich!]
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05-25-2020, 02:05 PM
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#50
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Rivet Master
2017 23' Flying Cloud
Bartlett
, Tennessee
Join Date: Apr 2017
Posts: 1,055
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OP here. I am resurrecting this old thread because, after 18 months, I have found where the water leak is that causes the water pump to pulse on momentarily every few hours. Airstream sent me a new water pump in case the water pump was bad, but that did not fix it. Just today, I finally found that there is a SLOW drip from the pop-off valve on the water heater. I have never had a pop-off valve leak before, especially a new one. I tried opening it and re-closing it, but it still drips SLOWLY. Since the drip is outside of the trailer where it won't harm anything inside, it is not worth my time to replace the pop-off valve. I will just continue to live with the occasional brrp of the water pump pulsing, but I will stop worrying about where in the trailer water is rotting something out.
__________________
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab 3.5l EcoBoost V6
2017 Flying Cloud 23FB "BobLin Along"
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05-25-2020, 03:00 PM
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#51
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Thanks for the update.
You can get a replacement PRV in the hardware store and swap it in about 5 minutes. Have some Teflon tape ready. Suggest buying an extra to stow onboard -- a good investment IMO.
Water with high mineral content can mess with these PRV's, and the last thing you want is for your failing PRV to fail in the "frozen shut" mode.
Peter
PS -- 2018 Post #3:
Quote:
Originally Posted by OTRA15
You probably have a very small leak someplace.
. . .
Have you checked the pressure relief valve [PRV] at the top of the water heater? Guessing you have a small leak there, which may be air right now, but will show water eventually. Turn off the water pressure and flip this valve up and down a bunch to times, to get any grit out.
. . .
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05-25-2020, 08:27 PM
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#52
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Rivet Master
2017 23' Flying Cloud
Bartlett
, Tennessee
Join Date: Apr 2017
Posts: 1,055
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Quote:
Originally Posted by OTRA15
Thanks for the update.
You can get a replacement PRV in the hardware store and swap it in about 5 minutes. Have some Teflon tape ready. Suggest buying an extra to stow onboard -- a good investment IMO.
Water with high mineral content can mess with these PRV's, and the last thing you want is for your failing PRV to fail in the "frozen shut" mode.
Peter
PS -- 2018 Post #3:
Quote:
Originally Posted by OTRA15
You probably have a very small leak someplace.
. . .
Have you checked the pressure relief valve [PRV] at the top of the water heater? Guessing you have a small leak there, which may be air right now, but will show water eventually. Turn off the water pressure and flip this valve up and down a bunch to times, to get any grit out.
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Yep, you nailed it. When I checked the valve earlier, it must have been leaking the air pocket.
__________________
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab 3.5l EcoBoost V6
2017 Flying Cloud 23FB "BobLin Along"
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05-26-2020, 01:15 AM
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#53
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Thanks.
If the water system is pressurized, and you first turn off the hose bib and/or pump, by gingerly flipping the PRV handle up and down . . . the residual pressure in the system might purge any mineral grit out of the valve. Don't try this with full water pressure "on" . . .
Glad you found the problem . . . subtle things like this can be annoying.
Peter
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06-21-2020, 04:44 PM
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#54
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3 Rivet Member
2016 25' Flying Cloud
z
, Texas
Join Date: Oct 2017
Posts: 175
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I had the same issue with my 2016 FC TRB, but it only did it when I left the city water cap off, put the cap on no pump burp, I wanted to add that in case someone else had the same problem
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