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Old 06-18-2010, 11:49 AM   #1
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Attempted to drain fresh water tank, which according to the sensor panel was 1/3 full. When I removed the cap from the drain, the water barely trickled out. I opened all the faucets in the trailer but this did nothing to improve the flow from the drain. Has anyone else encountered this problem?

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Old 06-18-2010, 12:00 PM   #2
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If your water tank is like mine, the drain does not come out the bottom of the tank like you would "expect" it to!!!!
They install them at least 2in. or so up on the side wall. I don't understand the thinking on this but as far as I'm concerned who ever is responsible for that design is dumber then a box of rocks!!!!!


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Old 06-18-2010, 02:48 PM   #3
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Since my fresh water tank is at the rear of the trailer, when I want to drain it I raise the front of the trailer up almost as high as the landing gear will go so the water tank is tipped as much as possible to drain it.
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Old 06-19-2010, 12:53 AM   #4
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After leaving the drain valve open overnight, there is no water coming out but the sensor panel in the trailer still says the tank is 1/3 full. I guess if the drain is on the side of the tank rather than the bottom, the tank can never empty completely. I wonder what happens in the winter time, it gets pretty cold here in central Ontario. The front of the trailer is slightly elevated, I guess I should try raising it up a little higher.

Thanks for help guys.


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Old 06-19-2010, 02:34 AM   #5
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The problem with freezing water is expansion. Water in the tank will not cause a problem from freezing since there is plenty of room to expand. Water in the lines is the biggest problem for freezing. However, water in the tank for long periods could lead to bacteria.

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Old 06-19-2010, 06:07 AM   #6
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Quote:
Originally Posted by Stan
The problem with freezing water is expansion. Water in the tank will not cause a problem from freezing since there is plenty of room to expand. Water in the lines is the biggest problem for freezing. However, water in the tank for long periods could lead to bacteria.
Correct, lots of room for expansion so no need for concern.

Also, you can assume your sensors are not correct (they are known for this especially in the black tank) or that your drain is mounted on side of tank leaving that amount of water in the bottom of the tank.

Either case, still no need for concern. As far as bacterial growth, once a year put a couple of cups of bleach in the tank, fill tank and then drain. Rinse tank. If there is any trace of the bleach that bothers you pour a box of baking soda in tank, fill and rinse.
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Old 06-19-2010, 12:45 PM   #7
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my drain is on the bottom but the tilt of the unit makes or breaks a complete drain
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Old 06-19-2010, 11:55 PM   #8
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Quote:
Originally Posted by Greg Morin
my drain is on the bottom but the tilt of the unit makes or breaks a complete drain
Are you sure???
Have you had the cover off the bottom of your rig so you can actually "see" the tank?? The drain line comes through the membrane and makes it look that way, but unless yours is different then the rest----------
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Old 06-20-2010, 07:56 AM   #9
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Quote:
Originally Posted by Old Farmer
Quote:
Originally Posted by Greg Morin
my drain is on the bottom but the tilt of the unit makes or breaks a complete drain
Are you sure???
Have you had the cover off the bottom of your rig so you can actually "see" the tank?? The drain line comes through the membrane and makes it look that way, but unless yours is different then the rest----------


yes there is a small cap that unscrews on the bottom of the freshwater tank

on our 2008 zt260 bh
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Old 06-20-2010, 11:32 PM   #10
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You are pretty lucky if there is a bottom drain on your unit. I wonder why CR doesn't do it with all tanks.
How about posting some pics so we can see it??

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Old 06-21-2010, 01:10 AM   #11
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If you still haven't been able to cure the 1/3 full indicator, check the wiring of the sensor. Mine was originally wired wrong. I found the color wiring schematic at the panel manufacturers website. In my case, the 1/3 full and and full wires were flipped.
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Old 06-21-2010, 08:42 AM   #12
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well I took the pic but cant post it any ideas?
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Old 06-21-2010, 08:44 AM   #13
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If your on www.rvforums.org Ill post it there
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