Centrifugal pump operating procedures: 1, pre-boot preparatory work: Check the centrifugal pump and motor are in good condition, the bearing grease is in line with the requirements, the oil level is appropriate, the various parts of the screw is loose, the lack of disk pump 3- 5 laps, to see if the rotation is flexible and free, there are no noise in the pump, check whether the eccentric wear coupling, whether fastening. 2, check before starting the valve: the pump inlet valve are all open, balance pipe valve, balance pipe pressure valve is open, the pump bearing, packing box cooling water valve open and control the flow, check the pump outlet valve is Close, pump return valve is closed, open the pump outlet vent valve, the pump air to the net, and then immediately shut down. 3, start the operation: 1) Before starting the pump, electrician (high pressure centrifugal pump) must contact with the good, and let other people pay attention to safety, so as to avoid danger. 2) Press the start button, pay attention to the current changes. 3) Observe the pump pressure rise to the maximum pressure of the pump situation, the valve will slowly open the outlet to maintain a stable pump. 4) After starting, we must follow the method of listening, watching, touching, thinking and smelling. We should conduct a comprehensive inspection on the pump. If any abnormal situation is found, stop the pump immediately and check it out. 4, inverted pump operation: 1) Press the start of the inspection and start the operation steps to start the backup pump. 2) After the standby pump is started, the valve should be shut down slowly, and the outlet valve of the standby pump should be slowly opened at the same time so that the pressure fluctuation in the main line can be controlled within the specified range. Stop the valve according to the requirements. 5, stop pump operation: 1) the pump outlet valve slowly closed. 2) pay attention to the main line pressure, dry pressure to maintain stability. 3) Press the stop button to stop the pump. 6, tour inspection should pay attention to: 1) Check the pump for liquid. 2) Check the lubrication, see the lubricant level is appropriate. 3) Check the cooling water conditions, water pressure requirements within the specified range. 4) Check and adjust the packing leakage, the amount of leakage is within the specified range, packing box temperature shall not exceed 70 ℃. 5) The instructions of the instrument is normal. 6) Check the ministries pipeline valve is missing, with special attention to the intake pipe is not allowed to intake, so as not to affect the pump to work properly. 7) sliding bearing temperature shall not exceed 70 ℃, rolling bearing temperature shall not exceed 80 ℃. 8) Check pump vibration is not exceeded. 9) The flowmeter put into operation, observe its flow.
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