Forum Discussion
louiskathy
Jul 07, 2013Explorer
The black valve should always remain shut until you are ready to dump the black tank. You have built up solids in the tank...and let all the liquid drain out.
Big mistake.
CLOSE THE VALVE. Put enough water into the tank to fill it at least 1/2 full.
You say you are at a permanent location... so you can't drive the trailer around to let it sloosh and loosen the contents of the tank, right??
That would be the easier way to get the tank clean. The harder way (your only option then??) is to just make sure the black tank is always full before you pull the black valve. (and please make sure you close the gray tank valve before you open the black tank valve so you don't mix the contents of the black tank into the gray tank... when you close the black tank valve, it's okay to pull the gray tank valve. The gray tank valve can stay open when you are parked, EXCEPT when you are draining the black tank.)
Do you have a black tank internal sprayer??
Big mistake.
CLOSE THE VALVE. Put enough water into the tank to fill it at least 1/2 full.
You say you are at a permanent location... so you can't drive the trailer around to let it sloosh and loosen the contents of the tank, right??
That would be the easier way to get the tank clean. The harder way (your only option then??) is to just make sure the black tank is always full before you pull the black valve. (and please make sure you close the gray tank valve before you open the black tank valve so you don't mix the contents of the black tank into the gray tank... when you close the black tank valve, it's okay to pull the gray tank valve. The gray tank valve can stay open when you are parked, EXCEPT when you are draining the black tank.)
Do you have a black tank internal sprayer??
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