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Old 03-31-2014, 11:00 PM   #1
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Black Tank Question

We took delivery on a 2014 Rockwood 5th wheel a couple of weeks ago. We are very happy with the dealer, but the PDI wasn't the best ever. It was maybe a bit our fault as we told the guy that this was our fourth RV and he must have assumed that we knew everything about RVs, but we don't.

Our old TT did not have a black tank flush and this one does. On the outside of the unit is a connector for a water hose. What is the best way to use the flushing system and what is inside the black tank to make it work?
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Old 03-31-2014, 11:25 PM   #2
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There's a spray nozzle inside the tank that basically pressure rinses the tank out. My dealer told me to dump the tank, leave the valve open and flush it for about 15 minutes. Didn't say how often, I figured I'd so it once or twice a year. Maybe every time I'm at a park with a sewer connection.
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Old 03-31-2014, 11:38 PM   #3
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Try to use mine before leaving campground.
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Old 03-31-2014, 11:41 PM   #4
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I use it every time the black tank is dumped. I also connect a clear elbow (a Flush King) and run the black tank rinser until the discharge is clear. I've also attached a brass adapter to the outside shower with an additional back-flow preventer and flushed using the FW tank and water pump as many dump stations don't have a hose attachment to use for flushing.

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Old 03-31-2014, 11:45 PM   #5
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I run mine every time I've got sewer hookups. I do mine this way:

1) dump black.
2) run flush until water generally clear.
3) close black valve, continue to run flush (fills black tank with clean water)
4) dump grey, wait for it to finish.
5) by now black should have about 1/4-1/3 full.
6) close grey, open black.

Repeat steps 3 and 6 waiting 5-10 minutes between dumps until I no longer see any "stuff" coming from the tank.

At the end of the season, I spent about 2-3 hours filling and dumping the tank getting it good and clean before breaking my final camp.
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Old 03-31-2014, 11:47 PM   #6
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Quote:
Originally Posted by Dave_Monica View Post
I use it every time the black tank is dumped. I also connect a clear elbow (a Flush King) and run the black tank rinser until the discharge is clear. I've also attached a brass adapter to the outside shower with an additional back-flow preventer and flushed using the FW tank and water pump as many dump stations don't have a hose attachment to use for flushing.

Dave

That's not a bad idea. Got details?
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Old 04-01-2014, 01:15 AM   #7
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Black Tank Question

I do the same thing as Dave. I flush the black after every dump. When the water starts flowing 'clear', you should be good. I have one tip for you though, a lot of dump stations I've been to don't have a male hose end, just a cut hose. I bought a few 'male' hose repair ends and keep them with my tool kit. Since you have to have a male hose end to screw into your 'sani-flush' line, just push it on the hose end, tighten and your set, i got some at my local wallyworld for a few bucks apiece. Attached a pic.
Happy Camping

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