Handan roof fan _ in Nan Kelai (certified) _ Qinhuangdao roof fan

 Roof fan is mounted on the roof of exhaust ventilation, use of the environment due to the special nature of the installation of steel roof fans, the fans decided to use special materials and structures. Roof fan air back down to prevent the device after setting, because the high-speed rotating fan in hot action, resulting in a lot of the wind speed increases in the duct roof fan manufacturers, fans start to reverse the motor is very unfavorable, may be due to the starting current is too large damage. Roof fan in the design should have a reliable rain, snow, wind and sand proof performance, snow and rain did not like sand, snow and sand because not only will enter the blower fan model parameters from the upper part of the roof, in the outdoor wind speed Under certain intensity roof fan, the fan may enter from the bottom. ③ motor current is too large and the temperature is too high a boot inlet and outlet pipes are not shutting;.. B input voltage is too low or the power single-phase power failure;. C spindle speed over rated;. D input is too large or medium density temperature is too low. . e motor bearing damage; bearing in oil or fuel excessive. f. System changes, causing the fan load increases, the motor load becomes large. Handan roof fan _ in 南科莱 (certified) _ Qinhuangdao roof fan provided by Shandong 南科莱 Air Conditioning Equipment Co., Ltd .. Shandong 南科莱 Air Conditioning Equipment Co., Ltd. (www.wctfsb.com) is a leader in Dezhou, 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 . In Nan Kelai leadership with the staff warmly welcome all inquiries negotiations to create a better future in Nan Kelai.