Axial fans are promoting the use of natural natural wind speed rotation of the turbine fan, and the indoor and outdoor air convection principle, parallel to the air flow in any direction, and into a bottom vertical acceleration of the air flow, in order to improve indoor ventilation change An apparatus for gas effect. The fan-proof roof fan manufacturers do not use electricity, no impatient tone, long-term operation. Based on air flow and air flow principles of natural law, is set at the top of the roof of rationalization can quickly exhaust gas indoor hot and dirty, improve the indoor environment. Is the use of natural wind turbine fan and indoor and outdoor temperature difference caused by air convection, rotation of the turbine and thus promote the use of centrifugal force and negative effects of the indoor stale hot air out. Liaocheng Flextronics Ventilation Equipment Co. specializes in non-powered and non-powered natural ventilation fan and so on. Fans of the body to be in good condition, no leakage of high pressure axial fan site: local fan body to be in good condition, no leakage high pressure parts. Must elevate local fan when installed over 0.3 m (with track surface counting) and securely installed. At the same time must be made by the designated officer responsible for the management, to ensure the normal operation. 7. Local Fan and pressed into starting device must be installed into the wind tunnel, the return air from the roadway is not less than 10 m factory roof fan manufacturers, full-pressure wind tunnel where the supply is greater than the local fan intake air volume and installation site to return air wind tunnel can not be less than 0.25m / s. 8, should use anti-static, flame retardant duct. No dead hanging straight duct bend naturally roof fan manufacturers, every ring will hang, found lacerations promptly repaired or replaced. Duct bend elbows to be set up, you can not turn tight corners, standard specifications and install local fan and spare local fan automatically switches to work cross-duct joints shall be specified in the operating procedures. 9, normal operation and standby local fan were stopped after power failure, when power is restored, the local fans and spare local fan to work on their own are not allowed to start, you must manually open the local fan. 10, using the local fan sites for wind wind power lockout must be implemented to ensure the normal operation of the local fan when stopped or after stopping the wind can stop the wind zone off all non-intrinsically safe electrical devices. When working local fan failure, local fan switch to the backup job, you should stop within the scope of work of the local fan ventilation, troubleshooting; partial rear ventilation After troubleshooting, to return to normal work to resume work. 11, once every ten days methane wind blocking test at least once a day should work with local fan spare local fan automatically switch test, shall not affect the local ventilation during the test, the test records to be archived for future reference. No power roof fan manufacturers, Flextronics ventilation, Texas factory roof fan ventilation equipment from Liaocheng Flextronics Limited. Liaocheng Flextronics Ventilation Equipment Co. (www.lcwctf.com) (www.lcwctf.com) is an industry leader in Shandong Liaocheng, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Flextronics ventilators in leadership with the staff warmly welcome all inquiries negotiations to create Flextronics ventilation a better future. You can also access (www.lcwctf.com/supply_details_50088820.html), for more information about the company.