Abstract: Maintenance of the Power of Turbomolecular PumpLiu Wengui(Yichang institute of Geology,Yichang 443003,Hubei,China)Received Abstract:The principle and the main parameters of the power of the turbmolecular pump made by BALAERS Company are briefly described.The maintenance procedure has been discussed according to the practice of the author.Keywords:turbomlecular pump;maintenance; procedure