Fan equipped with motor power DK40 fan is a fan of the installation according to the maximum angle of maximum power operating point determined. If the user does not need to be installed with a maximum angle, the performance should be based on actual needs matching motor power. Use and maintenance: from the fan into the wind direction, the impeller should be rotated counterclockwise JK67 Board Ventilator _ pneumatic blower (certified) _ Chaoyang 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.