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Cabinet
It is made of steel sheet, coated with black lacquer, the screws are electroplated.
Running wheel
is made of glass fibre reinforced thermoplastic. The impeller is statically and dynamically balanced.
Motor
is asynchronous with resistive armature, stator with cooling fins, black lacquer finish. The motors are equipped with thermal protection as standard, the windings are tropicalised with class F insulation and an operating temperature of -40 to +70 °C. Grease-filled ball bearings for life. IP65 protection.
Speed control
is carried out by electronic or transformer regulators by changing the voltage, for three-phase types by frequency converters.
Rotation direction
can be changed for both single-phase and three-phase motors. With a standard impeller, the flow rate drops by approx. 30% when the direction of rotation is reversed. With the wall-mounted version, the air flow from the motor to the impeller is standard.
Clamps
is made of black plastic as standard. In the single-phase version, it also includes a start-up capacitor. The terminal block is located on the motor.
Noise
emitted by the fan is tabulated, measurements are taken at a distance equal to three times the impeller diameter (but at least 1.5 m) in the free acoustic field.
Mounting
of the fan in each position of the motor axis. The housing shall not transmit mechanical stresses from the building structures.
