The conveyor cone for dust is necessary to guarantee the central vacuum sealing. Without the cone, the suction power decrease by over 40%, making the vacuuming useless.
The dust vacuumed is divided from the air thanks to the cyclone effect at the inside of the unit body, and it falls into the dust collection bin. The conveyor cone prevents the dust to come back to the filter and get it dirty.
ATTENTION: check your central vacuum diameter. Available diameters: 32 cm – 28 cm