Start with a clean press, add up to 2 cups max and with the syrup at 190 or more, run that thru the press and back into the mixing tank. When the syrup coming from the filter looks sparkly clear, stop the press and move the hose to your bottler or a barrel. Then for each additional 5-6 gal of syrup in that same session add up to 1 cup DE, mix it in and send it thru the filter. With each new batch of 5-6 gal, add 1 more cup of DE
You were filling the hollow plates with your initial charge, that is why it plugged.
Late in the season you might need to add an additional 1/4-1/2 cup of DE per 5-6 gal batch.
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.