... unit, provided with a dust filter unit, supplied with a beltand comfort plate, a hose with a bayonet connector (air hoods)or a hose with an EN thread ... : 280l/min. using a hose with a bayonet connector (air hoods), and 180l/min. using a hose with an EN thread connector. ... The unit contains a warning facility to warn the user against reduced air supply, due to clogged filter ...