Fan installation maintenance (1) Before installing the fan must scrutinize whether: damage deformation, the connecting portion loose, the impeller and duct collision problems, such as found in the above question exhaust fan principle, must be repaired before installation. (2) The installation should pay attention to the direction of rotation and airflow direction of the impeller sign, does not allow the fan reverse (reverse) operation. (3) The fan base must be combined with the natural ground surface, are not allowed to beat the base to force the join. (4) fans need positive horizontal lifting (fan base below) when the exhaust fan, the bottom bearing surface must be flat fan; and (5) of the fan connected three-phase voltage 380V, 50Hz power supply. (6) is connected with the fan inlet and outlet pipes should not be borne by the fan duct, should additional support. (7) Specification exhaust fan installed, be sure to check the fan and exhaust fan fire in the pipeline, there should be no fall or debris left or tools. Fans need to test run 10 to 30 minutes, to be confirmed after the fan is operating normally prior to his official use. Exhaust fan installation and maintenance: a kitchen fan is indispensable key kitchen equipment, recommended not installed in the ceiling, to be installed in the engine room and so on, roofing or exterior wall for easy maintenance of the place. Second, due to the long hours in the kitchen fan temperature, humidity, fumes gas. Regular maintenance is indispensable work. Failure: 1, the impeller blade leads to oily curvature, angle deformation, air volume total pressure parameters decreased significantly, reaching less than exhaust requirements. 2, the impeller oil stains causes the impeller to lose balance, increase shock, damage to the bearings. 3, harsh environments parts easily rust, damaged fan. Exhaust fan _ liter Swiss mechanical and electrical specifications (Online) _ exhaust fan ventilation and air conditioning provided by the liter Swiss mechanical and electrical equipment factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.