Cabinet
The fan is made of galvanized steel sheet, sandwich design. The enclosure is coated with a 50 mm thick layer of soundproofing material. The impeller motor is mounted on a service door allowing easy cleaning and maintenance. The casing is fitted with flanges for mounting on square pipes.
Circulating wheel
The impeller is radial with backward curved blades and is made of galvanized steel plate. It is statically and dynamically balanced.
Motor
is asynchronous with a resistive armature. The motors are fitted with a thermal fuse as standard, the windings are in a moisture proof finish with Class F insulation. The ball bearings are grease filled for life. Protection IP54 (selected IRAB versions IP44).
Square box
is made of black plastic as standard, is loosely attached to the motor supply cable and can be screwed to an easily accessible location on the cabinet with self-tapping screws.
Mounting
in every position of the fan, preferably with the axis of the motor vertical, with regard to the inspection activity and the possibility of opening the inspection door.
Speed control
is carried out by electronic or transformer regulators by changing the voltage. For three-phase types by frequency converters.
Rotation direction
is indicated by an arrow stuck on the cabinet. The direction of rotation must be checked after commissioning, if the direction of rotation is reversed, the phase sequence must be reversed (3f. design).
Instructions
The fans are suitable for general air handling applications where low installation height and low fan noise are advantageous. The fans are suitable for ventilation of restaurants, hospitals, sports halls, warehouses and production areas due to IP54 protection and higher operating temperature up to 70 ˚C. They can be preferably used in combination with heat recovery heat exchangers.