3
Donaldson Company, Inc.
clean-air outlet
dirty-air inlet and collected mist drain
first-stage filter
pleated filter
cartridge
large droplets
large droplets
exhaust pack
clean-air plenum
blower motor
blower
Unit Operation
Operation
During normal operation, contaminated air enters the
unit through the dirty-air inlet on the bottom of the unit.
The incoming air slows, causing large mist droplets and
particles to fall out of the air stream. The air passes
through a reusable first-stage filter designed to collect
and coalesce large droplets and particles.
The primary stage of filtration is the pleated filter
cartridge specifically designed to collect, coalesce, and
drain fine mist. As the mist coalesces, the droplets are
big enough to run down the cartridge and drain back into
the collector. The droplets will drain on both the inside
and outside of the cartridge. Liquid that collects on the
inside of the cartridge drains through the bottom portion
of the porous media and into the hopper. Clean, mist-free
air exits the cartridge and discharges through the top of
the collector.
