Maintenance as long as the understanding of the mechanical structure on the well resolved, and centrifugal pumps are simple machines. Maintenance should be noted that the use of the rated range, can not be no-load operation, to avoid the phenomenon of cavitation and steam tie, stepped up inspections and timely replacement of worn sealing components. (1) Check whether the pump pipe and the junction loosening. Hand rotation pumps, centrifugal pump If we look at whether the flexibility. (2) to join the bearing lubrication oil bearing the body to observe the oil level should be the subject of the centerline at the oil, lubricating oil should be promptly replaced or supplemented. (3) Unscrew the water pump centrifugal pump drain plug, filling water. (4) off the road a good outlet pipe valve and export pressure gauges. (5) of fixed motors, Wuxi welded Look at motor turn is correct. (6) starting motor, when the normal operation of centrifugal pumps, open the export depending on the pressure gauge shows that, after the appropriate pressure, and gradually open the valve, and check the motor load conditions. (7) try to control the flow of centrifugal pumps, and head on the plate within the scope specified in order to ensure the efficiency of centrifugal pump at the highest point of operation in order to get the most energy-saving effect. (8) centrifugal pump during operation, the bearing temperature must not exceed the ambient temperature 35 ℃, Wuxi pipe shall not exceed the maximum temperature of 80 ℃. (9) If found to have abnormal noise centrifugal pump should immediately examine the reasons for stopping. (10) centrifugal pump to stop when it is used to close the valve, pressure gauge, and then stop the motor. (11) centrifugal pump at work, within the first month, after 100 hours to replace oil, after every 500 hours, oil change time. (12) are regularly adjusted packing gland, packing the room to ensure leakage of the normal. (13) regular inspection sleeve wear, the wear should be promptly replaced after larger. (14) centrifugal pump used in the winter season, parking, the need to turn on the water pump drain plug screw to open the lower part of the media put the net. Prevention of Frost Crack. (15) pumps a long-term disabled, Wuxi pipe is required to pump all apart and wipe away moisture, and the combination of the rotating parts coated with grease installed at a good, safe custody.