Normal operating conditions a) applies to the ambient atmospheric pressure does not exceed 86kPa ~ 106kPa; occasions b) ambient air temperature -20 ℃ ~ + 40 ℃ of; c) medium relative humidity less than 95% (+ 25 ℃ when); d) installed in no explosion hazard K45 main fan, transport medium must not contain explosive material. 1, rotor balancing school. 2, the amendment eccentric and static balance correction. 3, straightening or replacing. 4, fastening foot bolts. DK40 main fan | Explosion main fan (certified) | Main Fan by Zibo Blower Factory Co., Ltd. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, 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. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.