The fans are designed to simultaneously exhaust smoke generated during a fire, and remove heat out of the premise or building. Used in for continuous operation in general ventilation systems.
The fans are used for continuous operation at ambient temperatures ranging from -60 °C up to +50 °C (based on the climatic category, see designation key); at the temperature of 400 °С in smoke exhaust mode – up to 2 hours.
Fans with a fire resistance rating of 200 °С/2 hours and 300 °С/2 hours can be made on request. Technical data for the 200 °С/2 hours and 300 °С/2 rated fans are fully identical to those rated 400 °С/2 hours.
Design
The fan has a metal casing with rolled flanges, which ensures high rigidity and minimal clearance between the casing and the impeller.
There is an inspection hatch provided for comfortable maintenance. All fan’s components are polymercoated, which ensures its durability if exposed to atmospheric conditions.
Impeller
The impeller can have 6 or 8 blades at an angle ranging from 10° to 40°, which allows the fan to be selected as close as possible to the specified point of operation.
The blades are made of steel.
The special shape of the blades ensures high efficiency while generating minimum noise.
Motor
The fans are equipped with three-phase motors rated for 400 V, 50 Hz. Depending on the model, single-speed or two-speed motors are used.
Single-speed fans are equipped with 2-, 4- or 6-pole motors.
Two-speed fans are equipped with 2/4-, 4/6- or 4/8-pole motors.
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