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Old 05-26-2015, 09:06 PM   #1
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2014 27' Flying Cloud
Stowe , Vermont
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Black & Gray tank gauges

In our 2014, 27ft., FC, the gauges in the galley that register the amount of fluid in both the black and gray tanks goes from indicating 1/4 tank directly to almost full - rarely any amounts indicated in between the 2 extremes. Any ideas what to do? Anything that can be added to the tanks that could help?
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Old 05-26-2015, 09:32 PM   #2
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W , New England
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I don't have my manual with me, but there is a process to calibrate the tanks (is your unit a Micropulse or a SeeLevel?). If a Micropulse, they're notoriously bad at this task and like many users, I've learned how to guess usage well enough to only use the system as a backup to my intuition :-)

I did have good luck after the factory calibrated the system for me while doing some other work last year. They can perform ok if calibrated. It's also important to be level...

Good luck!
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Old 05-27-2015, 08:20 AM   #3
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2001 25' Safari
Fair Oaks , California
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My system has three lights (green, yellow, red) to indicate how closely the holding tanks are to being full. These monitoring systems are consistently inaccurate. The only sure way to know when my tanks are full is to look. When the gray tank is full, water will begin to rise in the bottom of the shower drain. And, I can see directly into the black tank through the drain in the toilet when it's opened. I let the tanks fill to 3/4 or so, then dump. I never let them fill completely, but I let them fill enough to thoroughly flush the tanks when they are emptied. And, I always dump the tanks before hitting the road even if it means adding water to them to ensure a thorough flush of the tank. Adding a bit of valve lubricant seems to help the monitor in the gray tank a bit, but not much. Sorry, not a better answer for you. We dry camp a lot. Our fresh tank capacity is 39 gal, our gray is 39 gal, and our black is 19 gal. Because our fresh water normally goes into both the gray and black tanks, I know that we never have enough water on board to overfill either of those tanks.
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Old 05-27-2015, 09:44 AM   #4
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The system you will eventually use is sighting down through the toilet for the black tank and when you remain wet in the shower for the gray tank.

Don't try and rethink this issue because thousands before you have with no results.

Luckily it is hard to fill the black tank and when my feet remain wet in the shower I dress go outside and open the gray valve and then open the black valve for a count of 10, close the black valve, close the gray valve and go to bed planning a trip to the dump station for the morning.

Tank management is the best part of camping.
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Old 05-27-2015, 10:19 AM   #5
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so if I turn off the pump i can step on the toilet lever and peer down into the tank (I only have 1 tank)? my gauge only seems to increment in large steps like 6-10 percent. what do I look for? The bottom of the toilet plastic? Some distance below?
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Old 05-27-2015, 11:16 AM   #6
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2010 22' Sport
Boise , Idaho
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I haven't tried this yet but I'm told that 1 Cup of Calgon Water Softener and 1 Cup Dawn Dishwashing detergent dumped into each tank will keep the sensors clean enough that the gauges will work. We are used to the gauges not working; we know that we have to dump after three nights of boondocking...
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Old 05-27-2015, 11:30 AM   #7
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a cup of dishwashing detergent? Must be machine detergent? 1 cup of dishwashing liquid would fill the trailer with suds I'm guessing :-)
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Old 05-27-2015, 12:10 PM   #8
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Attended a seminar at a rally focusing on black and gray tank cleaning and they had what sounded like sensible approaches.

3 Tips for RV Waste Tank Maintenance from Kleen Tank

Note, I am not endorsing their service, just their tips.


Greg
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Old 05-27-2015, 12:13 PM   #9
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2005 28' International CCD
Salem , Virginia
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"Tank management is the best part of camping" LOL i like that must be an engineer

Bruce Beard installed the sea level system, search for him on here or the facebook airstream groups. Thats my next project
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Old 05-27-2015, 12:48 PM   #10
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Quote:
Originally Posted by leedav View Post
so if I turn off the pump i can step on the toilet lever and peer down into the tank (I only have 1 tank)? my gauge only seems to increment in large steps like 6-10 percent. what do I look for? The bottom of the toilet plastic? Some distance below?
Yes. If your water pump is off, you can step on the toilet flush pedal and see right down into the black water holding tank through the open toilet valve. Do this once when you know your black tank is empty to see where the bottom of the tank is. If the tank fills to anywhere near the top, it's time to empty it.
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Old 05-27-2015, 03:45 PM   #11
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1996 25' Excella
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HowieE I am impressed by your creativeness. I've used that tactic to flush the Black Tank....and the shower drain is the definitive statement that he Grey Water Tank is full!

Now can anyone tell me where to find instructions on calibration. My tanks are MT and I know they are whistle clean so I would like to reset the levels.

JCW
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Old 05-27-2015, 05:20 PM   #12
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Sacramento , California
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I am a 9 yr TT owner, but just moved up to an AS 23 FC. In learning my new digital tank sensing/cleaning, the manual refers to "auxililary" tank. Do they mean Black or do some models have actual auxiliary tanks?
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Old 05-27-2015, 09:19 PM   #13
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2013 25' FB Flying Cloud
Ojai , California
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Buy seelevel 2 gauges. They are mounted on the outside of the tanks, BIG.
And unlike the MicroPlus monitor that came with your new rig, THESE WORK.
Expense, yes but worth it.
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Old 05-28-2015, 05:56 AM   #14
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Longboard6 - The auxiliary tank in AS is the gray water tank. When you empty the tanks on your AS look at the pull levers - one is labeled Main (that's the black tank) the other is labeled Auxiliary (that's the gray tank). Be sure to empty the black tank (Main) first.
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