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-   -   Filling The Freshwater Tank (http://www.gsowners.com/forums/showthread.php?t=6378)

Sudsy 09-22-2018 07:49 PM

Filling The Freshwater Tank
 
I have been a little confused about how to exactly fill the freshwater tank in my 05 Sun Voyager. When I move the selector to the "fill" position it does just that. When the tank is full and I have a steady stream from the overflow I switch the valve to the "normal" position. But... The water keeps flowing from the overflow. If I don't do anything it will almost empty itself. If I cut off the city water source and then turn on the the pump and run some water it will stop. I have been able to now fill the tank and it has sat full for three days so it's not a cracked tank. It took me several tries to get it as full as it is now. I can see the side of the tank and it is about 1 inch from the top. There is also a pressure relief valve on the side of the tank that I can see. I have checked the roof vents and they are clear.



I have looked for a procedure in the book but a lot is assumed in the manuals.


Sudsy

heetseeker 09-27-2018 11:49 PM

I'm stumped. Overflow lines are usually 3/8" and are welded to the top of the tank with a braided line going to the overflow plumbing. Seems like you are getting a siphoning action as once it starts to overflow, it keeps siphoning out the tank. But, I've never heard of an overflow having a drop down tube in the tank to make that happen. So that's not the issue. I know that some tanks swell when filling because the overflow line is clogged partially by bug nests and can cause issues filling as well as popping the overflow line off the tank. If the fill volume is faster than the air escaping from the vents, it can also swell the tank causing water to blast out of the fill or overflow as the tank comes back to it's normal shape....hmmm.

heetseeker 09-30-2018 10:51 AM

Well, I read my owners manual and it states that "the water tank can't be filled when the coach is connected to the city water system" and also that the gravity fill hatch door must be opened and filled by a suitable hose or container. Can't find that hatch on my coach, so still looking for the answer.

Sudsy 09-30-2018 11:56 AM

No Gravity Fill
 
My Class A coach doesn't have a gravity fill for the fresh water tank. Just a selector valve to redirect the water to the tank.



Sudsy

heetseeker 10-04-2018 12:10 PM

Have a call into the GS company and will ask for a schematic of the water/plumbing/valves for the larger coaches with the selector valves. I had a few questions myself on filling and specifically the location of the check valves and their failure indications.

Cheers

Sudsy 10-04-2018 02:17 PM

Quote:

Originally Posted by heetseeker (Post 26513)
Have a call into the GS company and will ask for a schematic of the water/plumbing/valves for the larger coaches with the selector valves. I had a few questions myself on filling and specifically the location of the check valves and their failure indications.

Cheers


I actually feel like I'm a friend of Millie Birchfield. She is the Class A lady at GS. My coach is not as complicated as the pusher coaches but more complex than the Travel Trailers. I never thought to ask her about plumbing diagrams. She sent me all the labels for the circuit breaker panels and relays. That has been a life saver for troubleshooting. I can actually say that after I iron out a small issue with the furnace my coach will be 100% up.



Sudsy

jd625 10-05-2018 08:57 AM

I've been watching this thread to learn, but couldn't chime in because we do have a gravity fill. I did find this forum post and wonder if it applies.....

http://www.irv2.com/forums/f54/water...eam-97239.html

Sudsy 10-05-2018 10:13 AM

Quote:

Originally Posted by jd625 (Post 26517)
I've been watching this thread to learn, but couldn't chime in because we do have a gravity fill. I did find this forum post and wonder if it applies.....

http://www.irv2.com/forums/f54/water...eam-97239.html




I read over those post. Yes the pressure fill is the only way. I have figured out now that if I just turn on the water pump and when the tank is full turn the valve to City Water and turn off the water feed pressure then turn on the outdoor shower the siphon stops right away. I will just do it that way. Sure have rinsed that tank out though!


Thanks for the link.




Sudsy

nemo45 10-07-2018 12:32 PM

I put a valve on that overflow line. When water started coming out I shut it off and and then closed the valve on the overflow. You MUST open the valve on the overflow before you try and fill it again.

Sudsy 10-07-2018 01:12 PM

Quote:

Originally Posted by nemo45 (Post 26535)
I put a valve on that overflow line. When water started coming out I shut it off and and then closed the valve on the overflow. You MUST open the valve on the overflow before you try and fill it again.


What kind of camper do you have?


Sudsy


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