Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 03-16-2014, 11:12 AM   #1
Junior Member
 
Join Date: Jul 2013
Location: Charlotte NC
Posts: 12
Fresh water tank overflowing

Hi I have a Jayco Model Avaytar yr 2006. I filled the fresh water take the other day and it showed full on the indicator. I noticed it started over flowing through the over flow value. When I went and checked the tank yesterday it showed 2/3 full. How do I know if the indictor is off or if the tank drained that much water. Any suggestion would be greatly appreciated.

What is the best way to see how much water is in the tank?

Thanks in advance.
__________________

__________________
bpolkusm is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-16-2014, 01:50 PM   #2
Senior Member
 
Join Date: Jan 2012
Location: Janesville, wi
Posts: 633
Fill the tank slowly, to prevent "backflow". If filled too fast the "airblock" will cause the tank to "burp" the incoming water, making you think the tank is overflowing. When all settles, you probably do have only 2/3 full.
second question: can you physically see the side of the tank ?? The darker water will give you an idea of the water level.
__________________

__________________
Tom3205 is online now   Reply With Quote
Old 03-16-2014, 03:22 PM   #3
Junior Member
 
Join Date: Jul 2013
Location: Charlotte NC
Posts: 12
Response

Hi Thanks for the response. I cannot see the inside of the take. I will try filling it slow to see if that works.
__________________
bpolkusm is offline   Reply With Quote
Old 03-16-2014, 03:26 PM   #4
Senior Member
 
Koop's Avatar
 
Join Date: Dec 2012
Location: Full Timing
Posts: 745
If your sensors indicate the level in thirds, when it shows 2/3, it just means that the full sensor is no longer indicating. When it passes the 2/3 threshold, it means it's above 1/3 but below 2/3. When the 1/3 light goes out, you're somewhere between empty and 1/3.
__________________
Mike
2003 Alpine Coach 40MDTS - 400HP Cummins ISL
Can Am Spyder Roadster
Koop is offline   Reply With Quote
Old 03-16-2014, 03:32 PM   #5
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,252
Quote:
Originally Posted by bpolkusm View Post
Hi Thanks for the response. I cannot see the inside of the take. I will try filling it slow to see if that works.
If it's a typical white, translucent fresh water tank, viewing the OUTSIDE of the tank will reveal the level of the water inside, sort of like a milk jug. When you've stopped adding water, does any continue to leak out through overflow or vent line? Sometimes the overflow starts a siphon and needs to be re positioned to break siphoning effect. Check underneath after water is shut off for continued draining.
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 03-16-2014, 03:47 PM   #6
Senior Member
 
Fleetwood Owners Club
Join Date: Dec 2004
Posts: 527
I had a two tank system which siphoned water down to about that level after being full. If you caught it before over flow the level would stay full. I modified the vent system to cure it. Do not remember details of how I did that, probably put a tee in the vent pipe between tanks and ran a pipe to a higher level to break the the siphon.
__________________
targaboat is offline   Reply With Quote
Old 03-16-2014, 09:50 PM   #7
Senior Member
 
ImagesByHawk's Avatar
 
Holiday Rambler Owners Club
Join Date: Nov 2013
Posts: 165
Gauges are never 100%, so fill it slowly until it starts to pour out the overflow. It may drip for some time afterwards especially if the water is cold and the ambient air warm.
__________________
2004 HR Ambassador 38PDQ
http://usa-rvnomads.com/
ImagesByHawk is offline   Reply With Quote
Old 03-16-2014, 10:19 PM   #8
Senior Member
 
Tony Lee's Avatar
 
Join Date: Sep 2012
Location: Peru heading for Brasilia, Brazil
Posts: 2,122
If the outlet of the vent pipe is below the top of the tank, AND there are no other openings or leaks in the top of the tank then when you completely fill it until water flows out of the overflow pipe, the syphoning action starts and keeps going causing the tank to start collapsing. Once the suction pressure of the syphon is counteracted by the reluctance of the tank to collapse further, the syphon stops and the tank reverts to its normal shape by sucking air back through the overflow pipe. When it all settles down the tank will be considerably less than 100% full.

The other possibility is if the vent tube is just poked through a hole drilled in the tank and extends inside the tank down to the 2/3 mark, then once water starts flowing out of the pipe, it will keep syphoning until the end of the pipe inside is uncovered.

Solution is simple - just raise the outlet of the overflow pipe until it is at least as high as the top of the tank.
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 03-17-2014, 11:54 AM   #9
Senior Member
 
scenic route's Avatar
 
Join Date: Jan 2010
Posts: 1,767
If I wait until the water starts to overflow, I get the syphoning effect as well. Now I fill just until the 'Full' indicator light flickers and then I stop. This leaves us will more of a full tank than if I wait for the overflow to start.
__________________
Jan and Bob

RIP 'Squeaky'
scenic route is offline   Reply With Quote
Old 03-17-2014, 01:33 PM   #10
Senior Member
 
homecan1's Avatar
 
National RV Owners Club
Freightliner Owners Club
Join Date: Oct 2013
Location: Southern California
Posts: 195
Relatively easy to eliminate the siphon effect. Just put a loop in the vent hose. Make the top of the loop higher that the vent outlet. No more siphon.
__________________
Palm Springs, CA - 2005 National Tropi Cal 370LX on a Freightliner, Cat 350 power. Towing a Rinker R1 - Lake Havasu Bound!!
homecan1 is offline   Reply With Quote
Old 03-17-2014, 01:51 PM   #11
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,252
Quote:
Originally Posted by homecan1 View Post
Relatively easy to eliminate the siphon effect. Just put a loop in the vent hose. Make the top of the loop higher that the vent outlet. No more siphon.
I suggest you take a bucket and your garden hose and give it a try. If you put a bucket of water on a table and start a siphon with the garden hose, as long as the one end stays below the surface of the water and the other stays below the bottom of the bucket, you can do any number of loops, curlycues, dips, hills, etc. with the hose and the water will still flow. (whew, a long sentence, but I was a science teacher, not a english major)
There must be an opening for air to be introduced into the hose, either by a hole in the loop, a 'T' with the 3rd open to air, or the end in the tank above the surface of the water.
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 03-17-2014, 04:49 PM   #12
Senior Member
 
Razzman's Avatar
 
Join Date: Jul 2012
Posts: 389
Put a vented loop into the vent hose make the loop the highest point, problem will be solved. You want something similar to this ...
Attached Thumbnails
Click image for larger version

Name:	3_4_vented_loop_2.jpg
Views:	37
Size:	14.7 KB
ID:	58503  
__________________
2006 37' Damon Astoria DP 3595 Pacific Edition
2013 Honda CR-V EX-L AWD
Ozzy & Morgan - mini Dachshunds
Razzman is offline   Reply With Quote
Old 03-17-2014, 05:14 PM   #13
Senior Member
 
38 Special's Avatar
 
Monaco Owners Club
Join Date: Aug 2010
Location: Irondale, Alabama
Posts: 470
On an 02 Monaco Diplomat I had, it would siphon like that. I found the cure on here, I think. I drilled a 1/8" hole in the 90 degree elbow where the vent exited the top of the tank. That broke the siphon.
__________________

__________________
2008 Monaco Camelot 42 DSQ
Irondale, Alabama
38 Special is offline   Reply With Quote
Reply

Tags
fresh water, tank, water



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Draining fresh water tank TN-Traveler Monaco Owner's Forum 4 03-15-2014 11:46 AM
Fresh water dump valve Vtxbiker Alpine Coach Owner's Forum 6 01-16-2014 09:25 PM
Water Tank Fill Method '99 Pace Arrow wimberleyman Fleetwood Products Owner's Forum 5 01-10-2014 01:38 PM
Fresh Water Tank binspector Newmar Owner's Forum 5 07-22-2013 11:44 AM
Axle hits water tank 2010 Surveyor Tom3205 Forest River Owners Forum 11 04-29-2013 02:19 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.