Reply
 
Thread Tools Display Modes
Old 04-14-2017, 08:29 AM   #1
Boss Ox & Drovergirl
 
oxcamper's Avatar
 
Join Date: Feb 2014
Location: N.E. Ohio Snow Belt
Posts: 784
Water filling the fresh water tank

I have a Salem Hemisphere 2015 282RK. We are at a seasonal site and are connected to the fresh water supply and do not use the fresh water holding tank or the water pump. I do winterize the fresh water system and pump even though we don't use it, and when flushing out in the spring, I leave the drain valve open to the fresh water holding tank.
We've been at this site for 4 seasons and I've done the same thing each year.
I opened up the camper this spring, and hooked up the fresh water hose to the "fresh water" connection and flushed out the tank and pump. Then,, as normal, I connected the water supply to the "city water connection" and flushed out the antifreeze in the rest of the lines. Everything was good.

About 2 days later, I heard the noise of a water leak splashing on the ground and discovered water was flowing out of the drain valve from the fresh water tank. Now nothing is connected to the tank inlet and there should be no water in the tank.

My only guess is that water from the pressurized side of the lines is back flushing through the pump into the holding tank. There is a filter on the inlet side of the pump (conveniently ) located under the sink behind a panel. I do not see any check valve, unless its integral to the filter. Other than the connection on the outside of the trailer to fill the water tank, there is no other inlet to the holding tank other than the pump hose.

I have not taken the pump out to inspect it. The pump is a SHURflo 4008 by-pass pump.
There are no water leaks in the trailer. If I let the tank fill and run the pump with the city water shut off, all works as it should.
Why this all of a sudden happened this year I don't know unless there is a some debris or deterioration in the pump workings as a result of age or no using it.

Has anyone had this or heard of this situation?

I am thinking of putting a shut off valve on the outlet side of the pump where it connects to the water supply to keep the water from back flushing through the pump. Since we don't use it on any normal basis, I would just have to remember to open it if and when we do need the fresh water tank.

Does this sound like a reasonable solution?
__________________

__________________
Mark, Vicki, & Scout THE dog
2015 Hemisphere 282RK
2011 2500HD Silverado
1992 Goldwing Aspencade
oxcamper is offline   Reply With Quote
Old 04-14-2017, 08:38 AM   #2
Senior Member
 
Capt. Mike's Avatar
 
Join Date: Dec 2012
Location: Franklin County, MO
Posts: 2,545
There is a diaphragm integrated into the pump. Often, it gets a little dirt or some other foreign material in it, and holds that diaphragm open. Try shutting off the city water supply, turning the pump on, and running a little water from the fresh water tank through the pump. Do that several times - on, off, on, off, etc. - to see if that "flushes out whatever is lodged in there, affecting that diaphragm.

That usually works, but if it doesn't, maybe a little compressed air (very low pressure) through the pump. Otherwise, you are looking at removing the pump and rebuilding or replacing it. they make rebuild kits for water pumps because this is a fairly common thing.
__________________

__________________
Mike and Yvonne
and Sophie, the little white dog
2017 Columbus 320RSC
2015 Chevy Silverado 2500HD Duramax 4X4
It's not how old you are, it's how you are old.Jules Renard
"It's not the years...it's the mileage." - Indiana Jones
Capt. Mike is offline   Reply With Quote
Old 04-14-2017, 08:42 AM   #3
Boss Ox & Drovergirl
 
oxcamper's Avatar
 
Join Date: Feb 2014
Location: N.E. Ohio Snow Belt
Posts: 784
thanks Cptn, It's kind of what I figured. A piece of dirt or debris is holding it open and not seating properly.
I did do that once, but I'll give it a couple more tries and keep you posted.
__________________
Mark, Vicki, & Scout THE dog
2015 Hemisphere 282RK
2011 2500HD Silverado
1992 Goldwing Aspencade
oxcamper is offline   Reply With Quote
Old 04-14-2017, 09:49 AM   #4
Senior Member
 
Join Date: Oct 2015
Posts: 438
I have a valve on the inlet side of the pump. If in city water I leave it off. If I did not have one I would add.
__________________
Dale & Karen
2015 Lacrosse 311RLS
2006 F-250 The 06-6.0
Dwilcox is offline   Reply With Quote
Old 04-14-2017, 10:04 AM   #5
Senior Member
 
Join Date: Aug 2015
Location: Stafford, VA
Posts: 364
__________________
2015 grey wolf 27RR
2015 Chevy 3500HD
kcmusa is offline   Reply With Quote
Old 04-14-2017, 10:48 AM   #6
Senior Member
 
Join Date: May 2013
Location: Livingston, TX.
Posts: 222
Same deal today on our 35ROK Sandpiper. We full time in ours and noticed this morning water coming out of the over flow and getting the gravel wet. Hooked to city water but the fresh tank says full and we haven't put any in fresh tank since April 3rd when we left Arizona. Going to run pump as Capt. Mike suggested and see what goes. We carry a spare pump but its a small chore to get to it.
__________________
2014 Sandpiper 35ROK
2004 Volvo VNL64T 630 left tandem
D-12 435 HP 740 CU
Western Golf and Country Cart (custom body, EZ-GO frame)
Arguing with some people is like trying to smell the color 9
Volvodriver is offline   Reply With Quote
Old 04-14-2017, 11:48 AM   #7
Boss Ox & Drovergirl
 
oxcamper's Avatar
 
Join Date: Feb 2014
Location: N.E. Ohio Snow Belt
Posts: 784
Just got back from ACE hardware with a straight. 1/4 turn pvc ball valve and installed it on the outlet side of the pump. I'll try to post a pic.
Works great-- all fixed. Keeps the line water pressure off thepump diaphrams
oxcamper is offline   Reply With Quote
Old 04-14-2017, 11:50 AM   #8
Boss Ox & Drovergirl
 
oxcamper's Avatar
 
Join Date: Feb 2014
Location: N.E. Ohio Snow Belt
Posts: 784
Photo of shut off
Attached Thumbnails
Click image for larger version

Name:	IMG_2420.jpg
Views:	215
Size:	324.0 KB
ID:	134714  
oxcamper is offline   Reply With Quote
Old 04-14-2017, 12:01 PM   #9
Senior Member
 
Join Date: Feb 2017
Location: Northern CA
Posts: 406
Fresh Water Flow

I have a 2014 Wildwood. Our second season, while connected to city water I found the tank overflowing. Turned out the backflow diaphram on the water pump was bad and allowed city water to flow through the pump to the fresh water tank and out the overflow. Not an unusual problem.
JimMorrell is offline   Reply With Quote
Old 04-14-2017, 12:11 PM   #10
Junior Member
 
Join Date: Apr 2017
Posts: 9
Ditto to all...

Brand new 2017 coachmen Mirada 35ls and as soon as we got home with it, set up camp, connected city water, kept hearing it and finding nothing... fresh tank fills... overflow... not worth taking entire MH to dealer for warranty on this...

1/2" threaded ball valve and close nipple, and leak lock.... added to the pump suction side... tested... good to go!!!
Bargeman is offline   Reply With Quote
Old 04-14-2017, 12:12 PM   #11
Junior Member
 
Join Date: Apr 2017
Posts: 9
Old school navy training: never rely on a check valve - holds true...
Bargeman is offline   Reply With Quote
Old 04-14-2017, 12:30 PM   #12
Junior Member
 
Join Date: Sep 2013
Posts: 22
Same problem with my sandpiper. Went to camping world and bought an in line check valve and installed it on the output side of the water pump. Took all of 10mn. solved the problem.
levert is offline   Reply With Quote
Old 04-14-2017, 04:47 PM   #13
Senior Member
 
Join Date: Aug 2014
Posts: 105
Water In Tank

Those pumps are ridiculously easy to take apart and put back together, and actually still work. Not a bad idea after years of not use to open it up and give it a cleaning.
RussPastuch is offline   Reply With Quote
Old 04-15-2017, 12:34 PM   #14
Senior Member
 
Join Date: May 2013
Location: Livingston, TX.
Posts: 222
It was debris in pump. Ran the fresh water through the sinks and plenty through the toilet. Checked the pump and presto no more water overflow. Thanks Capt. Mike.

Dave
__________________
2014 Sandpiper 35ROK
2004 Volvo VNL64T 630 left tandem
D-12 435 HP 740 CU
Western Golf and Country Cart (custom body, EZ-GO frame)
Arguing with some people is like trying to smell the color 9
Volvodriver is offline   Reply With Quote
Old 04-29-2017, 04:04 PM   #15
Senior Member
 
Join Date: Sep 2016
Location: Colorado
Posts: 687
Seems to be a common problem on new rigs. I think the manufacturer must leave as much trash in the plumbing system as they do inside of the trailer. I had read about this problem on this forum so was armed with potential fixes when it happened. I had water running out of the water tank drain. I disconnected the city water. Put a few gallons in the water tank. Ran the pump for a few minutes. Cleared out, no more problem. We'll see if it arises again. Never had this problem with my old rig.
__________________

__________________
2003 Duramax
2017 Crusader 315

2016 Boston Whaler Montauk 150
Former Montana owner
Colorado Cruiser, Over the Pass and Down the Hill
Comanchecreek is offline   Reply With Quote
Reply

Tags
fresh water, tank, water, water tank

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 03:03 PM.


×