Extractor fan KHAE

ductcommercialindoor

duct size: 40 x 20 cm to 100 x 50 cm swing out motor and impeller unit backward curved impellers speed is variable using auto transformers extremely low starting current sound-proofed version possible (..WS) Casings are made of galvanised steel sheet in the shape of rectangular ducts for direct installation into an air duct in every position. Suction and pressure side equipped with standard flanges. The complete motor-impeller unit can be folded out for cleaning purposes. The sound-proofed series (..WS) provides extremely low noise values with a space-saving, sound-absorbing perforated plate coating at concise points. The fans are only suitable for indoor installation. Aluminium sheet impellers (ALMg3) with backward curved blades are used. The impellers are mounted directly on the rotors of the external rotor motors and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11.. The drive motors are fitted with an outgoing cable. The electrical connection is made via an IP44 terminal box which is supplied loose. The direction of rotation is clockwise as seen from the suction side.