Roof fans type WO-D are adapted for vertical installation and are used for exhaust ventilation of buildings. Commonly, the air flow is from the impeller side towards the engine (B) – air extraction from the bottom up. WO-D roof fans consist of an aluminum housing, a galvanized cylindrical roof launcher, an impeller and a special SIEMENS electric motor. The motors are adapted to operate at temperatures up to +40°C (optional up to +60°C) and also adjusted to regulation with frequency converter (inverter), insulation class F, 400V, 1400rpm WO-D fans are easy to install and maintain, they are characterized by high efficiency and trouble-free operation in atmospheric conditions. They are widely used in various industries for ventilation purposes, where large amounts of air should be transported at low pressure. WO-D fans are designed for mounting in a roof base.

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