|
This method introduces compressed
air into the duct through a hose terminated with a "skipper"
nozzle (while the duct is under negative pressure). This nozzle is
designed so that the compressed air propels it inside the duct while
dislodging dirt and debris. The dislodged dirt and debris become
airborne, and are drawn downstream through the duct and out of the
system by the vacuum collection equipment. |
