Roof fan

Wind turbine models with roof, structure and performance 1, the type of fans have a total NO3,4,5,6,7,8,9,10,11.2,12.5,14,16,18,20,24,28,32 17 kinds of machine numbers. A drive into the form of formula (motor directly connected), C-type (belt drive) and gearbox rotate. 2, this type of fan for each machine number is divided into individual ventilation and reversible (exhaust and inlet) two kinds, reversible fan needs to be specified when ordering, reversible air of wind, air pressure efficiency about down 10% -15%. 3, the fan impeller, hairdryer, mushroom-shaped hood, loose-leaf damper, motor, transmission group, safety nets, anti-bird nets and other components. (1) The impeller made of high strength aluminum alloy blades, with excellent aerodynamic performance and corrosion resistance. (2) hairdryer fiberglass material with excellent corrosion resistance. (3) mushroom-shaped throttle can automatically open the damper closed when the fan is stopped, in order to reduce heat loss in winter. (4) motor lead to the outlet outside the enclosure safety switch, user-friendly connection. 4, the fan is in operation working medium industrial atmosphere, the media less than or equal to 70 degrees. When the medium temperature is 25 degrees, relative humidity less than 95%, the amount of dust medium (containing solid impurities) should not exceed 100 mg / cubic meter, such as the fan operating conditions exceed the above specifications, to be presented at the time of the order, for special design. 5, factory extracted from the fan performance, refers to air performance at standard conditions (temperature is 20 degrees) relative to the cloud National Day 50%, atmospheric pressure 101325Pa less than 760 mm Hg, gas specific gravity 1.2 kg / cubic meter of. If the fan work in non-standard conditions, its performance will have to pass the appropriate conversion formula. 6, the fan strength design designed by the following indicators: the fan when the wind speed is less than equal to 25m / s conditions of normal use, the fan does not break under extreme field hair Winds V = 32m / s condition. Installation, use and maintenance 1, the fan should be carefully checked before installation of the components, couplings for damage, loose and so, if it is replaced or corrected, paying particular attention to the impeller for damage and polishing, the blade and duct gap is uniform between the impeller rotation direction is correct. 2, the installation base surface must be flat and shall 100-200 mm above the roof to prevent water seepage, leakage. And shall be burying bolts. 3. After installation, test run, the data should be checked before shipping blade angle and the motor power is specified on the product nameplate consistent. If discrepancies should immediately stop using to prevent burn out the motor. 4, in the course should always pay attention to is functioning properly, should be timely maintenance, it should be cleaned after a period of time, dust, and grease lubrication each injection hole. 5. Check fastening nuts to ensure tightened to prevent loosening. 6, in the case of frozen snow during the winter, must often start the fan, to prevent snow clogging fan outlet.