Ventilators used in industrial kitchens are divided into two groups: Forward Centrifugal Ventilators and Backward Centrifugal Ventilators. The air in the industrial kitchens is Stained with greased and smoke, so the Forward Centrifugal Fan cannot be used. Because the gap between the impeller bushes is low and they are full of fat, after a few months, the fan performance is brought to zero.
If this type of ventilator is used for air intake, the fan should be washed monthly with special materials by a specialist. For this reason, a forward centrifugal fan is not recommended for evacuation of industrial kitchen air and it is preferable to use a Backward centrifugal fan.
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