Biogas blower should pay attention to what is in operation. The unbalanced factors of the rotor of the centrifugal pump are: uneven material prevention and unqualified part structure, resulting in imbalance between the center line of the rotor mass and the centerline of the shaft, resulting in eccentricity. Correcting the rotor imbalance of the centrifugal pump can be further divided into two. Static balance and dynamic balance: Generally also called single-sided balance and double-sided balance. The difference is that the single-sided balance is corrected on one correction plane, and the double-sided balance is corrected on two correction planes. Installation reason: The looseness of the foundation bolts and the leveling of the calibration have not been adjusted. Before the centrifugal pump works, check whether the foundation bolts are loose and whether the centrifugal pump is installed horizontally. Make sure that the mechanical seal has sufficient flushing water flow, water-cooled bearings do not use excessive water flow lubricant Do not use too much Check the recommended cycle. Establish operating records, including hours of operation, adjustment and replacement of fillers, addition of lubricants and other maintenance measures and time. Centrifugal pump suction and discharge pressures, flow rates, input power, lotion and bearing temperature, and vibration conditions should be regularly recorded. The host of the centrifugal pump is relying on the atmospheric pressure to pump water from a low point to a high point, and the atmospheric pressure can only support a water column of about 10.3m at most, so the host of the centrifugal pump cannot work 12 meters off the water surface. These also cause the centrifugal pump to vibrate when it is working. Foreign matter in the centrifugal pump. Before working the centrifugal pump, check the inside of the lower pump. Due to long-term use, foreign matter such as weeds in the water may be present inside the centrifugal pump.