VENTILATOR FANS VRN

One-sided suction ventilator fans of the VRN type are of a radial-flow low-pressure design with directly installed electric motors. These ventilator fans are manufactured for a non-explosive environment as well as for a potentially explosive working environment – Zone 2. The ventilator fans are intended for transportation of air within temperature ranges between –20°C and +50°C. The air shall not contain solid impurities which could deposit on the fan propeller.

One-sided suction ventilator fans of the VRN type are of a radial-flow low-pressure design with directly installed electric motors. These ventilator fans are manufactured for a non-explosive environment as well as for a potentially explosive working environment – Zone 2 (labelled as Z2). The ventilator fans are powered with flange or bottom electric motors where the fan propeller is set overhung on the shaft of the electric motor. The electric motor operates with its shaft in a horizontal position. There are manufactured 3 types of Ventilator fans of the type VRN for a non-explosive enviroment:

1) The casing of the ventilator fan is made of zinced plates. The holder of the electric motor is made of plates and profiles with anti-corrosion surface coating. The fan propeller is zinc-coated and suction mouth is aluminum

2) Stainless steel – the casing of the ventilator fan, the holder of the electric motor, fan propeller and suction mouth are made of stainless steel plate

3) Stainless steel for chemical operation – as well as point 2 – ventilator fan has extra protection against intrusion of chemical compound and caustic into the electric motor between the casing and electric motor. The ventilator fans are intended for transportation of air within temperature ranges between –20°C and +50°C. The air shall not contain solid impurities which could deposit on the fan propeller. Please specify position of ventilator fan in your order according of numbering on the picture bellow. The ventilator fans intended for non-explosive environment may be manufactured with speed regulator, but only for speed drop. Use of speed regulator with ventilator fans for Zone 2 is forbidden. If you want to order the speed regulator, please cite it in the order.

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WITH SIDE AIR DISCHARGE:

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WITH UPWARD DISCHARGE

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POSITIONS OF THE VENTILATOR FAN FROM THE “SUCTION” POINT OF VIEW

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CAPACITY DIAGRAMS

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