Large centrifugal fan runs using (1) after passing the fan commissioning, should the fan casing on the surface of the insulating layer bandaging centrifugal fan, use insulation material to reduce thermal spread outside the enclosure to protect the safety of the bearing. Moreover, the thickness of the insulating layer should be controlled, but also to be able to facilitate maintenance and removal. (2) oil supply situation bearing vibration and bearing temperature should be checked regularly to be able to allow the normal functioning of the fan. (3) the fan has just started working, vibration bearing parts are small, but with the increase in the use of time, the vibration will gradually increase. Once the fan reaches the maximum limit, we should shut down for repairs, otherwise continue to use it, there will be problems, danger, damage to the fan. (1) engineering design and the use of units based on the use of the characteristics of the type of centrifugal blower fan sites selected, and then the selected flow rate and total pressure Zhengzhou centrifugal fan, the fan number is determined from the properties of the table and the power required by the motor selected Hefei centrifugal fan, except for motor performance specified in the table, there are other types of motors are also optional, and specify when ordering. (2) The performance of the speed of each table is the most efficient performance tables within the range of 90% by traffic and other personality can be divided into four to eight points in the performance table when ordering prevail. (3) Fan qualified factory performance at a given flow rate under full pressure value does not exceed ± 5%. Wuhan drum centrifugal fan _ _ nagorye centrifugal fan blower fan provided by the Shanxi nagorye limited liability company. Shanxi nagorye Blower Co., Ltd. (www.sxgfj.cn) strong, credible, Shanxi Xinzhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead nagorye blower and you hand into the brilliant, for a better future!