They are suitable for suction of fumes or exhalations and in general for all applications where it is necessary to move clean or slightly dusty air through suction or delivery ducts.
The scroll is made of sheet steel with edged and pointed profiles, provided with a fixing flange on the delivery side, with holes allowing an orientation of 45 degrees, and a mouthpiece on the suction side on request; the motor-holding disc allows reversible assembly. Orientation can be clockwise RD or anticlockwise LG (see orientation table).
The impeller with forward-curved blades is of the Siroccotype, made of sheet steel and balanced both statically and dynamically in direct coupling with asynchronous three-phase or single-phase 2-pole motors in construction form B5 or B3/B5 and in continuous service S1 according to UNEL-MEC and IEC standards. The air temperature dcannot exceed 80°C, only in special execution can this limit be exceeded.