black water flush

wheelyrod · 08-22-2018, 03:25 PM

we've owned several tts, and just picked up our new 2019 rockwood signature 8332bs on Friday the 17th, after camping for 4 nights to try out all systems, I hooked up the hose to the black tank flush, and for some reason, I cant get nothing except a very small trickle of water to flow out of the tank. Also, with the dump valve open, when I turn the water on, it makes a whining sound. hmmm, any suggestions, thanks

IsleDog · 08-22-2018, 03:34 PM

may be silly to suggest, but did you open the second black tank valve? some new trailers have two that need to be opened.

wheelyrod · 08-22-2018, 03:39 PM

the unit doesn't have 2 black tanks, only 2 grey , unless I'm blind lol, if it does, ill have to locate it, the second grey is for the galley sink.

kenandterry · 08-22-2018, 03:40 PM

So, when you pulled the release valve of the black tank.....did it vacate forcefully from the black tank? Did the grey tank vacate forcefully?

Just checking that there’s nothing blocking the exit pipe from the tanks.

If when you use the hose for the black tank flush, and turn it on, and there’s hardly any water exiting, I suspect the water is NOT getting to the flush wand. (Picture the wand inside an electric dishwasher)

I suspect there’s a blockage on the input line to the wash wand.

Might be a warranty fix for sure.

IsleDog · 08-22-2018, 03:46 PM

Quote:

Originally Posted by wheelyrod

the unit doesn't have 2 black tanks, only 2 grey , unless I'm blind lol, if it does, ill have to locate it, the second grey is for the galley sink.

my mistake, i was meaning that there might be two valves for your one black tank. i have to open both on my camper to dump. it was very confusing for me at first, coming from a cassette in a popup.

Alan F · 08-22-2018, 03:51 PM

Your check valve may be faulty, or, I have heard that some get installed backwards. Either would cause it. My check valve failed after a year and I had to replace it. Either way, it would be a warranty item. Put it on your list. There will be a list.

wheelyrod · 08-22-2018, 03:53 PM

yup, both the black and the grey flowed with full force, wide open as a peanut shell, lol, they both drained completely, however, as everyone else does, or should do, we flush the black tank before pulling out of the campground, and storing the unit until the next trip.

wheelyrod · 08-22-2018, 03:56 PM

yeah, we're expecting small hiccups with this unit as well, but forest river seems to be a great product, and I'm sure they will take care of anything that pops up, at least for the first year. The list is already started. lol

wheelyrod · 08-22-2018, 03:58 PM

Isledog, there is only one valve on the bk tank , and it opens and closes fine, water flushes out fully, so, that's a good thing. lol

wheelyrod · 08-22-2018, 04:14 PM

Hey guys and gals, my wife and I are leaving Friday to tow the new baby to a campground in Elberton ga, for 13 wks, she is a travel nurse, so, I'll have plenty of time to work out the bugs and kinks in a new unit. Quick question for whoever, I've always closed the black tank valve after emptying it, and then turned on the black flush for a few minutes, I didn't try this on the new unit, because of the whining noise and lack of water flow. I didn't want to take a chance on breaking something that early, lol. I'll be setting up Friday afternoon, and will play with it some more. thanks for all of your input. God bless.

Reverse_snowbird · 08-22-2018, 04:19 PM

Quote:

Originally Posted by wheelyrod

Quick question for whoever, I've always closed the black tank valve after emptying it, and then turned on the black flush for a few minutes, .

Nope. You need to keep that black tank valve OPEN when you back flush for a few minutes.

BandJCarm · 08-22-2018, 04:21 PM

Quote:

Originally Posted by wheelyrod

Hey guys and gals, my wife and I are leaving Friday to tow the new baby to a campground in Elberton ga, for 13 wks, she is a travel nurse, so, I'll have plenty of time to work out the bugs and kinks in a new unit. Quick question for whoever, I've always closed the black tank valve after emptying it, and then turned on the black flush for a few minutes, I didn't try this on the new unit, because of the whining noise and lack of water flow. I didn't want to take a chance on breaking something that early, lol. I'll be setting up Friday afternoon, and will play with it some more. thanks for all of your input. God bless.

I keep it closed when the black flush is on all the time. But not for long and I don't leave it. Post #10 on this thread:

http://www.forestriverforums.com/for...ts-168499.html

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