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Cabinet
is of frame construction with 25 mm thick sandwich side panels, which are attached to the cabinet frame with self-tapping screws. The sandwich panels consist of external and internal galvanised sheet metal, with a sound-insulating mineral wool filling inside. The individual panels can be removed for inspection and cleaning. The fan is mounted in the enclosure on sprung profiles to reduce vibration transmission. There are circular throats on the cabinet with single-edge seals. There is a steel mounting frame under the cabinet. The individual panels are interchangeable with the discharge panel. The cabinet is pressurized when the fan is operating.
Running wheel
is radial with backward curved blades, it is statically and dynamically balanced. The impeller is made of aluminium (CVAB-N) or steel plate (CVAT-N).
Motor
is a single-phase 230 V/50 Hz with external rotor (CVAB-N) or a three-phase 4 or 6 pole 230/400 or 400 V/50 Hz (CVAT-N) equipped with PTC thermistor. Sealed and maintenance-free grease-filled ball bearings for life. IP55 protection, class F insulation, operating temperature -40 to +60 ˚C (CVAB-N) or -20 to +40 ˚C (CVAT-N).
Speed control
by changing voltage (CVAB-N) or frequency converters (CVAT-N).
Square box
is located on the motor as standard.
Mounting
is carried out only in the position shown on the dimensional sketch with the motor axis horizontal. The location of the discharge neck can be changed during installation by interchanging the neck panel with either side or top full panel.
Instructions
The fans are suitable for air handling applications where the low noise level of the fan is advantageous. The fans are particularly suitable for ventilation of restaurants, industrial kitchens, sports halls, hospitals, warehouses and swimming pools.
