The flap feeder system replaces the shutter valve at the rear of the drill rig.
Hydraulic motor turns the feeder which lets the dust out of the collector and prevents filter cleaning air pulse to blow to the dust pile below the collector.
Reducing the amount of dust flying around the environment helps to preserve staff health and to keep clean the coolers.
On Commando DC300Ri, Dino and Ranger DXi series the Dustmizer upgrade (see page 197) includes always the flap feeder system.