Alfan 50″ Belt Drive Fan
- For closed in areas with ventilation problems
- Suitable for ventilating and cooling poultry sheds
- May be used to cool and ventilate greenhouses
- For factories, use to clear gas, smoke, dust and odours
- 50″ – Single and 3 Phase
Product Overview
All Alfan cooling ventilation fan bodies are produced from galvanized steel sheet with aluminium blades.
It works by a motor-belt-pulley system and operates silently. The pulley is made from cast aluminum and bearing used on the blade side has an extraordinary design to extend the operating life of the fan. The circle frame is made of galvanized steel sheet. The shutters stay open during the operation of the fan and close when the fan ceases. The protection grill (wire mesh) is at the back of the fans and made from special wire. The fan is mounted to the wall by fixing the screws on the external frame of the fan.
The belt of axial fan which works by the “motor-belt-pulley” system can become loose in course of time. To only way to prevent this is to equip a tightening instrument. This way the capacity of the fan will not reduce and the belt will not wear out. To arrange necessary tightness in axial fans with the help of present technologies requires extra time and labour. But with the help of “belt tightening system” it takes only 10-15 seconds to arrange the tightness of the belt of the ventilator with using butterfly nut and bolt which are located near the instrument.
The working principle of the belt tightening system is, the tightening instrument moves the nut in the axial direction. This way the belt gets the necessary tightness.
