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Old 12-22-2016, 10:18 AM   #1
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How do you clean your gray tank sensors?

Our gray tank started showing 4 or 7% when completely empty. I have seen numerous ways to clean them such as pine-sol, water softener, dishwasher gel, bleach, etc. Most discussions include going mobile after the cleaner is added, we will be stationary another 10 days so trying to clean the sensors may have wait.

We use the dishwasher almost daily and the washer once or twice a week, I assumed that would help keep the sensors clean but apparently not.


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Old 12-22-2016, 10:30 AM   #2
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About once every six months, I use Pine Sol and or a dish detergent with multiple fill ups and empties. If I am traveling and using parks, I will do this with a half full tank to slosh around (and believe me, with some of these roads, sloshing around is inevitable).
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Old 12-22-2016, 10:55 AM   #3
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We have gotten 4s and 7s before on the gray tank and 50s, 54s on the black tank. I thought it was a dirty tank and went through a whole process of trying to clean them to no avail. I'm thinking they are error codes.
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Old 12-22-2016, 10:56 AM   #4
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When going from full hook up to full hook up campsites, fill your waste tanks to about one third full, put in your cleaning solution of choice, and slosh down the highway. Empty upon arrival.


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Old 12-22-2016, 11:54 AM   #5
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I thought the tank sensors were attached to the outside of the tanks not inside
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Old 12-22-2016, 12:07 PM   #6
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I add a couple of scoops of Happy Camper to the grey tank.... Works for me.
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Old 12-22-2016, 12:45 PM   #7
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Quote:
Originally Posted by rogelling View Post
I thought the tank sensors were attached to the outside of the tanks not inside

The sensors are on the outside but can be effected by buildup on the inside.


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Old 12-22-2016, 02:07 PM   #8
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Quote:
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The sensors are on the outside but can be effected by buildup on the inside.


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So you are not really cleaning the sensors just the inside wall of the tank.

I also think temperatures have an effect on calibration.
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Old 12-22-2016, 03:42 PM   #9
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I used Happy Camper Extreme. Works great. A little pricey but worth it.


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Old 12-23-2016, 08:48 AM   #10
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I would reset the Sea Level by turning the 12 volt power off for a few seconds.
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Old 12-23-2016, 09:05 AM   #11
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Over the past several years we have found leaving the gray tank valve open all the time when on full hookup will promote buildup on the tank walls. Any residue will dry out and harden making it more difficult to remove. So we let the gray tank fill and then drain as needed, same as the black.

Also found that keeping both tanks near full when in storage (with clean water) will help soften up any existing buildup and is very effective at promoting more accurate Sea Level readings. For us this has been much more effective than any of the chemical options we tried.
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Old 12-23-2016, 09:24 AM   #12
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Grey Tank Issues

The SeeLeveL System uses external sensors that operate using a principle called capacitance. When the signal hits water it amplifies and curls back to create a measureable signal strength.
Any build-up on the wall that approaches 1/2 inch thickness will contain enough water to be measureable.

Bar soap contains a binding agent that will coagulate with food particles making a scenario to create build-up in a grey tank. The worst thing you can do is leave the valves open, now the sludge can really attach to the tank.

We have found that water softeners and soaps do nothing! You have to dissolve the buildup.
Happy Camper makes a cleaner called Extreme Cleaner that with soaking time and driving combined will remove the build-up.
Another remedy used by RV dealers to 'repair" the old probe systems is MicroBlaze that uses microbes to actually eat the material off the tank wall. We have found both methods to be workable.

Our 2013 Anthem would take quite a while to show zero due to a very low positioning of the sensor on the tank. Our 2015 Cornerstone has a much different position of the sensor (higher) and it takes longer to see any level indication on both the black and grey tanks also we zero much quicker.

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Old 12-23-2016, 09:26 AM   #13
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DSL, are taking a backhand swipe at our crummy California roads? I mean beautiful, smooth, well-marked California roads?
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Old 12-23-2016, 10:24 AM   #14
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I believe a lot of our sensor problems have to do with the quality of water in the areas you visit. We winter in AZ where the water has a high mineral content of calcium and magnesium, "hard water", and we deal with it constantly with not just sensors but also with washing the MH, other vehicles and general usage. My previous Pace Arrow sensors would start failing while in AZ but would start working again with different water after leaving AZ.

I have noticed after a couple of winters in AZ that my Entegra sensors work a whole lot better, hardly ever a problem that doesn't clear up in a day or two, than my older style Pace Arrow sensors which would quit working after a week or so in AZ and wouldn't clear up until getting the system back on Utah water in the spring.

I think Voltdoc's suggestion of not letting the tanks dry out is a good way to go.

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