Originally Posted by FlaBucki
The grey water tank sensor on my new AI seems off - shows 2/3 full very quickly even though the fresh water tank doesn't more than 1/3 empty. Are the sensors adjustable or is it possible mine wasn't installed at the proper level?
Tank levels aren't terribly accurate, in my opinion; they're more usable as indicators than actual measurements. If you fill the black and gray tanks untl the red "Full" lights are flickering but not steadily on, it's generally time to dump the tanks but not past
time to dump.
Dumb question - but what happens if the grey tank is overfilled?
There are no dumb questions, unless I'm
the one asking them! The first thing you would notice is gray water backing up through the shower drain; that drain is lowest, so it overflows first. Which is good news because the shower pan helps keep the excess water contained, and bad news because if you have to drive to the dump station, it will slosh over the rim of the shower pan.
Handy hint… If your gray tank starts to overflow into the shower pan, shut off the flow of fresh water so you're not making it any worse, and then go outside and open the gray tank valve, WITHOUT turning on the macerator pump. What this will do is drain some gray water into the 4" line between the gray tank and the macerator pump, without discharging any gray water onto the ground. That should free up just
enough space in the gray tank for the shower pan to drain back down before you head for the dump station. You should normally
drain the black tank first, then the gray tank, but the macerator pump makes it possible to partially drain the gray tank when that tank is trying to overflow, then switch to draining the black tank, before draining the rest of the gray tank.