I own a zubbler 30c is the max rate of climb, 4 months old ,contamination has occurred , I use prettua liquid, dried out under heat lamp 35-45min before entering the oven.I run 3-5 cleaning cycles I can still see black strikes along the elements . I've ordered calibration ring to verify the...
Sir, my heating elements will not clear up dark patches with several purgings, I'm using a zubbler oven front loader M. Im using no beads at this this time ?