Originally Posted by realebill
what do you think is causing the gray tank sensors to give a faulty reading?unlike the black tank where you have solids and paper to foul the sensors,in the gray tank you only have soapy water.at our seasonal site,the gray water and galley tank valves are left open. water in the traps blocks any sewer odor.i have never had to use chemicals in the gray water tanks. i only have to deal with emptying the black water tank.
(i'm assuming you are hooked up to sewage at your site )
Yes we are hooked up. I know some people leave the grey open, problem with that is eventually lots of scum will build up and you'll be left quite a mess. If you ever clean a shower or sink trap because of poor drainage, you' see what I mean. Add to that oils and food particles, it makes it worse. Its not really sudsy clean water. The sensors fouling, I think, is not from stuff hanging on them. Its caused by the tank skin being wet/dry while traveling or in use. The liquid leaves behind a conductive residue which eventuall allow a electrical path to indicate a level when its really just debris path between probes. Since we are stayin longer, we don't have the sloshing motion to help clean
I failed to mention the probes were on the same end of tank as the temp access. It still took quite some time to clean them. I could heart the spray hitting the tank end fro outside. I have my 15 minute fix
if the dumps are left open and the tanks not treated all season, I strongly suggest you determine if the drains in your tanks are opposite the dump valves. If they are you will have a serious build up of scum, hard solids, and bacteria strains not strains yet dicovered.