Welcome to the forum!
The gray tank won't flush the black tank, in cases where all the tanks dump out a single outlet the gray will "rinse" the sewer hose.
Your trailer should have a black tank rinser. The hose hook up is probably in the convienence center.
Most of us use the rinser to clean the black tank. There is probably a decal that says the black tank drain must be open. You can close the valve while running the rinser but be careful how long you let it run as it is filling the tank. Opening the valve after filling will clean the tank. In my particular case I do the fill/dump cycle about 3-5 times, when I see clean water I am done. Easiest way to see clean water is to use a "clear piece".
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
|