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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 with Al hub. The impeller is statically and dynamically balanced.
Motor
is asynchronous, black lacquer finish, stator with cooling fins, thermal protection of winding, insulation class F, operating temperature -40 to +70 °C (type HCFT/4-710 H -40 to +55 °C). Grease-filled ball bearings for lifetime. IP65 protection.
Speed control
is performed by frequency converters.
Rotation direction
can be changed. With a standard impeller, the flow rate drops by approx. 30% when the direction of rotation is reversed. With the wall-mounted version, the standard airflow is from the motor to the impeller.
Clamps
is made of black plastic. The terminal box is located on the motor (wall-mounted version).
Mounting
fan in each position of the motor axis. The housing must not transmit mechanical stresses from the building structures.
Noise
emitted by the fan is given in the tables, the measurements being made at a distance equal to three times the impeller diameter (but not less than 1,5 m) in the free acoustic field.
