Gray/Black water sensors don't work - Fiberglass RV


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Old 08-08-2003, 08:08 PM   #1
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Gray/Black water sensors don't work

Even when freshly dumped, the lights on my sensor panel show my black water tank as full and my graywater tank as half full. Freshwater works fine.

Any non-disgusting way to fix this prob?

Kitty
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Old 08-09-2003, 08:06 AM   #2
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Have you done the fill part way, add soap and drive so it agitates? This is suppose to clean it out. Haven't tried it myself. I can see this would work in the black, but why would you need to do this in the gray, I don't know. :conf.
check this out for a great mix. The Mix
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Old 08-09-2003, 11:32 AM   #3
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Orginally posted by Thomas and Janifer

Have you done the fill part way, add soap and drive so it agitates?
Good idea, Jana. I'll try it today.:wave
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Old 08-09-2003, 11:55 AM   #4
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How 'bout on the rocks,style?

I've always heard that one of the best ways to clean a tank was to dump in a bag of ice and drive around with it.

So, what about a cocktail of amonia (or the mix) and ice?
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Old 08-10-2003, 12:54 PM   #5
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sensors

Grey and black water 'sensors' are goofy devices that are made to sell!! They just don't work.........reliably..........over time.

Inaccurate at best til they quick completely.

If they give you a reading its 'at best' a comparative measure to the previous reading?!

IMHO........you're better off with no sensor. Well, ya do have a built in sensor for the black tank...........who gets that job? :o
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Old 08-10-2003, 01:05 PM   #6
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Hi I agree with Don.I would just junk them.I have allways known folks who had problems with them.:wave
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Old 08-10-2003, 09:17 PM   #7
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The cleaning mix didn't work. I wasn't able to try the ice deal this time. Next month, maybe, whe we are really on the road.

It appears that our best indicator is empty fresh water tank=full graywater. Be nice if the little lights said something like that, though.

Thanks for the input.
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Old 08-11-2003, 07:26 AM   #8
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Kitty ... don't wait until your next trip.

Hook up your trailer.

Fill both tanks half full.

Add a cup of laundry detergent (Tide, etc) to each tank.

Add a bag of ice to the black tank (hard to put ice in grey tank, so don't even try).

Drive around for a half hour or so (go to the grocery store, etc, on your normal errands.)

Afterwards, just leave the mixture in your tanks until your next trip.

Plan on stopping at a dump station in route halfway ... or at the campground when you arrive. Dump both tanks and see if sensors then work.

If they don't (and they probably won't, because I agree with Don about the sensors reliability), you'll soon develop a second sense for when the tanks are getting full.

I have heard that the laundry soap, agitated by a bag of ice, then left to sit, then agitated again, is the best method of cleaning the tanks.

It's kinda like filling up your washing machine half full and then letting the clothes soak in the mixture for a while.
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Old 08-11-2003, 09:34 AM   #9
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Quote:
Orginally posted by Charles Watts
Kitty ... don't wait until your next trip.
Charles,

Unfortunately, getting the rig in and out of our driveway is too much of an ordeal to take it out for a trip around the block. Our driveway-- cul de sac, actually-- is at least a 10% grade. When I drive up with the trailer, I have to nose the Previa into the garage as far as the angle will allow me-- about three feet-- then we unhook the trailer and muscle it around so it's along side the car and tongue out for the next trip. I will be very glad when we can get it into storage this fall.
:cblob
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Old 08-11-2003, 10:28 AM   #10
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Tank/sensors

Kitty, there might be a way to clean the sensors that is only kind of gross.

on some tanks the sensors are little things almost like plugs that are threaded into the side of the tank, like the drain plug on your water tank.
If these are the type you have, you can disconnect the wire attached to them,then thread the sensor out and clean it.
Repeat for the rest and there you go.

Of course you should do this when the tank is empty <img src=http://www.fiberglassrv.com/board/uploads/3f37b6e1a605apointlaf.gif/>
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