[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - fan] fan bearing temperature is normal for ≤70 ℃, if once rises to 70 ℃, electronic control should (will) alarm. You should find out the reasons, first check whether the cooling water properly? Bearing oil level is normal? If you can not find a reason, bearing temperature quickly rose to 90 ℃, electronic control should (will) alarm, stop signal again. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - roof fan] environment roof fan is mounted on the roofs of HTFC exhaust ventilation exhaust air box, install and use the environment as a result of the special nature of the decision the fan using special materials and structures. Air backflow device settings after shutdown to prevent roof fan, because in hot action fan rotates at high speed cooling fan, causing a lot of wind speed increases in the duct, the fan starts to reverse the motor is very unfavorable, may be due to the starting current excessive 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 into the fan from the top, in the outdoor wind speed reaches a certain intensity, Fans may enter from the bottom. DFBZ suction fan, Tianjin Jinzhong Ji Alibaba Gold Supplier, provided by the Tianjin Jinzhong Ji HVAC blower purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) (http://m.jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base. You can also access (http://m.jzjnt.com/supply_details_41632068.html), for more information about the company.