Natural roof ventilation using outside air, indoor and outdoor temperature difference, relying on the principle of suction and chimney effect, forcing the contaminated air in the air space below the vertical flow fan, flue gas, wet gas and other harmful gas vapor extraction. Roof ventilation with exhaust gas extraction, negative pressure zone at the bottom of the exhaust fan, through a series of purification to add to the negative pressure from the inlet wall area, ventilation 2, in order to achieve ventilation, exhaust, exhaust into the outdoor fresh air. Roof ventilation dampers leaflet safety net, aluminum motor, impeller, control systems and other components. Fan cover, hair dryer, stainless steel casing, 2 no ventilation in order to reduce overall weight and good corrosion resistance, ventilation 800, and increases the roof ventilators elegant look and feel. Intelligent motor systems in harsh environmental conditions start automatically. Roof ventilation usual zero energy, energy efficiency, low noise, high self-cleaning, anti-rain, anti-dew, in line with national energy saving policy, companies have been expanding at the same time, the introduction of international advanced technology, more efficient exhaust, more high-end quality products . The above is the introduction of small series on the roof ventilators to introduce you, I hope you can explain Xiao Bian help! Livestock fan maintenance, repair and maintenance electrical circuit 1, the control valve mechanical opening and closing movement is flexible, reliable, and opening and closing angle flag is clearly visible. 2, the light and the voltmeter, ammeter are all normal. Fans of the components operate without abnormal sound, three-phase current imbalance. 3. Check the remote control box element points are all normal. 4, continuous start-stop operation, check each point the remote control is correct and reliable. 5, commissioning two hours, observing the motor bearing temperature, motor temperature is within the normal range. 6, suitable for warehousing logistics roof ventilators ventilators 2_ Flextronics (certified) _ 2 by the ventilation Liaocheng Flextronics ventilation equipment provided. Liaocheng Flextronics ventilation equipment (www.lcwctf.com) (www.lcwctf.com) is an industry leader in Shandong Liaocheng, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Flextronics ventilation in leadership with the staff warmly welcome all inquiries negotiations to create Flextronics ventilation a better future.