Cabinet
is made of steel sheet, coated with black (white or grey) epoxy paint, mounting brackets and screws are electroplated.
Running wheel
is made of sheet steel, the "SICKLE" shape is specially optimized for maximum flow and pressure with minimum noise. The impeller is pressed directly onto the motor.
Motor
is asynchronous with short armature, external rotor and start-up capacitor. Insulation class B, protection class IP 44. Grease-filled ball bearings for lifetime. Motor is dynamically balanced to ISO 1940.
Speed control
is carried out by electronic or transformer regulators by changing the voltage.
Rotation direction
cannot be changed. In the wall-mounted version, the standard air flow is from the motor to the impeller, in the tubular version from the stator to the impeller.
Clamps
is made of black plastic as standard. In the single-phase version it also contains a start-up capacitor. The terminal block is located on the motor (wall-mounted version) or on the cabinet (piping version).
Mounting
Fans in each motor axis position. In the case of horizontal mounting, condensate drain holes must be opened in the rotor. The casing must not transmit mechanical stresses from the pipework. A flexible connection to the pipework must be used.
Noise
emitted by the fan is given in the tables, measurements are taken at a distance equal to three times the impeller diameter (but at least 1.5 m), on the intake side.