Shutdown procedures, emergency stop: in the the unit commissioning process, any of the following circumstances, should immediately emergency stop. Emergency shutdown operation is pressing the stop button on the main motor, and then carry out the rehabilitation work after the shutdown. a centrifugal fan sudden strong vibration, and has more than the trip value. b, the body's internal, touch scratch or abnormal friction sound. any bearing or seal smoke phenomenon, or a sharp rise in bearing temperature alarm value. d, the oil pressure falls below the alarm value and can not be restored to normal. e, tank level is low, there are emptying phenomenon. f, shaft displacement values ??significant continued growth, the alarm value. 2, normal shutdown: unit normal shutdown operation follows procedures. a gradually open the vent valve (, or export bypass valve), and the gradual closure of the exhaust valve. gradually shut the small intake throttling doors to 20 to 25 ° [2]. c, press the stop button, and note whether the shutdown process anomalies. d, crew stopped after 5 ~ 10min, or bearing temperature dropped to below 45 ℃ stop oil supply. For units with floating ring seal, seal oil pump must continue to supply oil until body temperature is lower than 80 ℃. Crew stopped within 2 to 4 hours should be periodically plate moving rotor 180 °. Foshan Sanhe Environmental Ventilation Equipment Co., Ltd. was founded in 2000, is a professional manufacturer of FRP corrosion resistant fan, plastic fan, FRP, PP mist purification tower the green ventilation equipment company; company formerly known as Guangzhou Sanhe Environmental ventilation equipment company to meet the needs of the business development, the company in 2009 from Guangzhou Panyu relocation to the Sanshui District, Foshan City, Datang Industrial Park, and renamed as Foshan Sanhe Environmental Ventilation Equipment Co., Ltd.. Foshan Sanhe Environmental Ventilation Equipment Co., Ltd. Tel :0757 -87,270,024 Mobile: 13318880325 Contact: Mr. Li Zaixiong Website: http://www.zgfengji.com/ Address: Foshan Sanshui District Datangpo Center Technology Park Hublot Road