I shut my 3x8 down by stopping fueling at 18 gal in head tank. When the boiling first begins to slow, I open the infeed float and put it all in the rear pan. This brings the level up about 1" max.
If I shut down with more in the head tank, I stop fueling and leave the floats the same. After the boil stops I cover the pans, close the head tank valve, drain the feed line into the rear pan, lock the door and go. My usual level is 3/4" above the flues and after the boil stops (in 45-60 minutes) I lose up to 1/4" only from heat in the bricks. I used to flood the pans but then discovered it not necessary.
Dave Klish, I recently bought a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.
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