Precept 31UL black tank question

[NancyandKenn]

hi all, we have owned/rented many MH in the past and just bought a Precept 31ul MH. We have noticed that the black holding tank seems to fill up rather quickly compared to past MH. Does anyone else have this problem?
Does anyone know if in the Precept if more than just the toilet goes into the black tank - ie maybe the bathroom sink?
And if its just the sensor that is inaccurate, how can you manually check the actual level of the tank?
thanks

[530ktm]

Many coaches have the bathroom sink draining into the black tank. One way to check the black tank is to look down the toilet shoot, I used to do that so I could have a really good indication as to when it was time to dump.

[Grey Ghost I]

If your coach is not a new one, it is possible that it is not draining completely and needs a good cleaning out. Most mh have the bath sink go into black tank as the tank needs LOTS of water to function properly.