I don’t understand…seems to always be 2 steps forward 1 step back with ventilation for me! After having got to the point after many attempts where I was able to roast with almost no backdraft and no air quality spike it’s now just suddenly returned to the extent I need both doors open to avoid massive smoke build up in the roastery.
The only thing I’ve done is clean the roaster and the Airwave. All the positioning and everything else is the same, and I can’t understand what I could have done during the cleaning process to have changed the setup! I cleaned the chaff filter baskets, the chaff collector box on the bullet, brushed inside the exhaust track and ran the self-clean cycle on the Airwave. I removed the face plate like normal and cleaned the IBTS sensor and vacuumed around the drum.
Any creative thoughts about what might have caused this would be appreciated as I’m totally stumped!