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09-07-2005, 05:16 PM
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#1
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Established Member
Join Date: Jun 2005
Location: Mankato
Posts: 31
M.O.C. #3911
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Black Water Tank?
Our RV registers a reading of 1/3 full after draining & flushing the tank. How do you completely drain the tank?
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09-07-2005, 05:24 PM
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#2
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Montana Master
Join Date: May 2004
Location: Fort Wayne
Posts: 689
M.O.C. #1536
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This is an ongoing problem. The sensors hardly ever work right. Do a search on black tank sensors and you will find different things people have tried to get them to work. Using lots of water will help some. You will get other help here.
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09-07-2005, 07:10 PM
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#3
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Montana Master
Join Date: Jan 2004
Location: Down the Road
Posts: 5,627
M.O.C. #889
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I use the black tank flush every time I empty the tanks. I have found that this really helps keep the sensor clean and working properly. You can also try putting some ice in the tank before you head down the road that day. By having an empty tank with maybe 3 gallons of water and ice it will act as a scrubber as the ice slops around the tank. I have a problem with my galley sensor, never seems to read empty and have tried everything.
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09-07-2005, 07:32 PM
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#4
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Montana Master
Join Date: Jun 2003
Location: Full Timer
Posts: 918
M.O.C. #331
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It most likely isn't the tank....it is the sensor. Do a search here for the details. Many(?) Most(?) of us don't even look at the sensor panel anymore.
Best,
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09-08-2005, 04:44 AM
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#5
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Montana Master
Join Date: Jan 2005
Location: Marcus
Posts: 1,032
M.O.C. #2819
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Depending on how often you go out you could try the method we use. I like to use the flush king thing a few times before leaving the park. Then before leaving the park I will close the valve and fill the tank 1/4 full and add some calgon water softener to the black tank. Then drive it home (or to the next camp site). The following weekend we drive to the campground and upon arrival we dump out whatever has sloshed around for a few miles and it will read empty every time. We have also done the same thing only adding Ice instead of Calgon and it works great too. I think the main trick is to have something in the tank when you are driving around to agitate back and forth cleaning the sides.
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09-09-2005, 10:18 AM
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#6
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Established Member
Join Date: Jun 2005
Location: Mankato
Posts: 31
M.O.C. #3911
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Thanks guys! I'll let you know if I get the tank to register properly.
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09-11-2005, 12:40 PM
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#7
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Montana Master
Join Date: Jun 2004
Location: San Antonio
Posts: 1,740
M.O.C. #1757
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Thanks for the great idea of using ice.
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09-11-2005, 03:37 PM
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#8
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Seasoned Camper
Join Date: Jul 2004
Location: airway heights
Posts: 90
M.O.C. #1892
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hi, over the counter fabric softener works good, tooooooo. 2 cups and 20 gallons of water.
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09-17-2005, 08:06 AM
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#9
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Montana Master
Join Date: Aug 2004
Location: Cedar Rapids
Posts: 4,876
M.O.C. #1944
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It's really nothing to worry about. You'll have an idea when it's beginning to get full. When you flush, you'll get some bubble blowback. That's because there is less room for air in the tank and the stuff you're flushing is pushing some air out. You'll have plenty of time to dump after you begin to notice this.
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