This product has two impellers close to the installation YBT proof fans, explosion-proof motor is driven by two counter-rotating were making each other. Friction sound, percussion KCS impeller loose or loose dust blower motor, deviation from the normal operating position. Reposition and tighten the impeller or motor fixed cylinder gland bolts, bolts found that damage must be promptly replaced. Dust blower, air blower (certified), wujiaqu Fan Co. provided by Zibo Blower. 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.