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Old 01-28-2013, 06:02 AM   #1
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tank level sensor cleaning

both my gray and black level indicators read 2/3 full when emptied. I suspect sensors are dirty. Thinking of; draining tanks just before a trip, putting a few gallons of water in each with some kind of detergent. The water sloshing around due to the travel movement would clean the sensors. Question is what detergent to use? or perhaps someone has had success with some other cleaning method?
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Bob
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Old 01-28-2013, 06:56 AM   #2
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The secret of tank cleaning (and it is more than just sensors) is prevention.

The liquid Calgon Water Softener (not fabric softener!) and detergent treatment in each tank WORKS.

Once there is slime on the tank walls only a thorough cleaning with a cleaner made for tank sensors will give you a hope of cleaning the tank walls of conductive slime.

I solved my problems by replacing the button sensors with sensors that have a Teflon collar the does not allow sensor to WALL contact and only will complete the circuit through the liquid.

Horst tank Probe Installation

and here is some additional information on gray tank cleaning:

Troubleshooting the MicroMonitor
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Old 01-28-2013, 07:30 AM   #3
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I have read on this forum that people have put in Calgon detergent. I have also heard on putting in ice cubes prior to traveling with it. This has been talked about on the forum but mainly about sensors in the black water tank.
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Old 01-28-2013, 07:41 AM   #4
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Quote:
Originally Posted by wbdvt View Post
I have read on this forum that people have put in Calgon detergent. I have also heard on putting in ice cubes prior to traveling with it. This has been talked about on the forum but mainly about sensors in the black water tank.
No, not the detergent; the water softener. And not water softener SALT either!
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Old 01-28-2013, 09:46 AM   #5
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I think it's a travesty that a quality organization like Forest River hasn't switched to capacitive tank-level sensing. See this: https://tankedge.com/ or this: http://www.rvgauge.com/.
NUWA is/was using the second of these and I was very impressed. The first is available from Camping World.

Everyone wrestles with the old-style sensors. WHY?
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Old 01-28-2013, 09:50 AM   #6
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Quote:
Originally Posted by BarryD0706 View Post
Everyone wrestles with the old-style sensors. WHY?
Because the Japanese haven't started making RVs . . . yet.
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Old 01-28-2013, 11:19 AM   #7
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Quote:
Originally Posted by BarryD0706 View Post
I think it's a travesty that a quality organization like Forest River hasn't switched to capacitive tank-level sensing. See this: https://tankedge.com/ or this: SeeLeveL RV Gauges by Garnet Technologies Inc..
NUWA is/was using the second of these and I was very impressed. The first is available from Camping World.

Everyone wrestles with the old-style sensors. WHY?
Capacitance systems come with their own unique set of problems and are a lot harder to troubleshoot when they go bad. The grass is not always greener.
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Old 01-28-2013, 01:33 PM   #8
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Herk,

I'm considering adding camper another project to the list and that's installing those Horst probes. I see in your photo they don't have the internal rubber lip like the button style. Are they help in place by press fit application or do you need to put some pooky on them?
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Old 01-28-2013, 01:36 PM   #9
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Herk,

I'm considering adding camper another project to the list and that's installing those Horst probes. I see in your photo they don't have the internal rubber lip like the button style. Are they help in place by press fit application or do you need to put some pooky on them?
The way the original probe AND the Horst probe works is that hard rubber base squashes down when you tighten the nut on the outside of the tank. They just push into the original holes. When you tighten the nut the black rubber seals the hole.

I pried the old probes out with side cutters as I said in my review.
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Old 01-28-2013, 01:57 PM   #10
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Another idea: My parents had a '96 TT that was the first one they had with tank sensors and both the black and grey tanks stopped showing empty. I would replace the sensors in the tanks (Didn't know about the Horst probes until now) and they would work for a while but go back to not empty again. I finally installed the "Quickie Flush" on both tanks were they would spray off the sensors, and never had a problem after that. My new V-light had a flusher in the black tank from the factory, but not the grey or galley tanks. I installed one in each before our first trip and have had no problems with any of the three tanks. I have installed a total of 8 on various trailers my parents and I have owned, have not had sensor problems on any of them. Have been very happy with the "Quickie Flush".
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