Liaocheng Flextronics Ventilation Equipment Co. specializes in non-powered and non-powered natural ventilation fan and so on. Description No power ventilation is running Cause "buzzing" sound is now without power ventilation noise reasons sum up, mainly in the following six: one: no power roof ventilators poorly installed roof ventilator should be installed in suspension can not be crushed by the spring foot bolts. Two: No power roof ventilators installed in contact with the window frame is too tight, hence resulting sash resonance roof ventilator running. Three: No power roof ventilators eliminate vibration seat cushion or tighten the screws fixed price axial fans, losing eliminate vibration effects, the resulting sound vibrations at work. Four: seat screws loose, bad impeller assembly, excessive speed, shaft mounting screws loosening Workaround: roof ventilator fan base, shaft screw fastening. According to the technical requirements of reassembly, adjust the impeller clearance. Five: Wind Blade chassis collision (cover). Six: bad motor bearings, axial fan base screws loose, fan shaft is not fixed tight top with a hood body blade gap is too small. Liaocheng Flextronics Ventilation Equipment Co. specializes in non-powered and non-powered natural ventilation fan and so on. Seven needs no power ventilators made: 1, no power roof ventilators and entries should be based on aerodynamics, made a streamlined FRP axial fan prices, the fan inlet / outlet flow smoothly, reducing pressure loss. 2, glass fiber reinforced plastic material formulations, to be performed in accordance with the relevant requirements of the plasticizer, add the appropriate amount of anti-aging explosion-proof axial fan prices, prolong life. 3, roof fan must have a reliable measures to prevent rain, snow penetration without power ventilators. 4, no power ventilation enclosure should be able to withstand the devastating impact of the local outdoor maximum wind speed. 5, should be set at the bottom of the security fence. Security fence is safe, reliable miniature axial fan price, can effectively prevent decrease in order to avoid an accident to equipment or parts. 6, roof fan should be provided with an efficient network, all stainless steel, mesh 30 x 30 mm. 7, no power ventilation should be static and dynamic balance test before delivery, after passing the factory before. In the static, dynamic balance, the fan impeller operation allows RMS vibration velocity is less than or equal to 6.3 mm / s, and shall comply with JB / T 9101 -. 1999 "fan rotor balance" price low noise axial fan, axial fan Linyi price, Flextronics Flextronics ventilators from Liaocheng ventilation equipment Limited. Liaocheng Flextronics Ventilation Equipment Co., Ltd. (www.lcwctf.com) (www.lcwctf.com) strong, credible, Shandong Liaocheng fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the innovative ideas will lead Flextronics ventilation into the brilliant and you work for a better future! can also be accessed (www.lcwctf.com/supply_details_50546675. html), for more information about the company.