There is a manhole for access to the bags in the filter's lower chamber. The bags' cleaning is accomplished percussively by means of pressurized air of 6-8 at. passing through nozzles and Ventris. The dust is blown from the filter cloths, falls on the filter's conic bottom and is carried away through a lock.
The bags' blowout is program-operated by a control board-timer.
A timer-operated pneumatic vibrator accomplishes dusting off on the bottom.