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Axial industrial fan FDA-4E-500B with grille and frame, supply voltage 230 VAC with power 420 W, working opening 500 mm and flow 8850 m3/h. It is possible to reduce the fan flow rate with a properly selected frequency controller.
Axial fans are used when high flow rates are required. Low operational noise is an advantage when placed in ventilation shafts or ducts in industrial halls or public buildings. It is important, when choosing this type of fan, to take into account its characteristics so that they correspond to the particular application.
The fan is not allowed to operate under vacuum conditions (for example, the blower can take air out of a room that can not get enough air otherwise). This will result in insufficient airflow to cool the motor and the thermal protection will work, preventing damage to the fan.
It is possible to adjust the fan speed by means of a frequency inverter or by phase adjustment with a reduction of the speed up to 75%. The fan can not be powered by a DC / AC inverter with a modified sinewave - this will cause it to malfunction.
