When the two pumping units of Yangzhou No. 2 Power Plant were tested and repaired, the vibration value began to be large. After a period of time, the vibration value gradually decreased and stabilized. The disassembly and assembly of the upper frame and the lifting of the entire motor will affect the key data of the motor. In severe cases, the motor oil and air gap will be uneven. This requires measuring the concentricity of the thrust head and the upper cylinder (measuring the distance between the thrust head journal and the machining surface in the upper cylinder) and the air gap for further checking. If the deviation is too large, proper adjustment is required. The fastening bolts of the coupling between the motor and the water pump are generally fastened with a torque wrench, and the fastening bolts of the motor base should be fastened by the same person. The tightness of the bolts should be consistent with the degree of tightness during disassembly, and the bolts in all directions should be evenly and symmetrically fastened. In the actual installation and maintenance, due to the different order of the bolting of the Roots vacuum unit and the degree of exertion, the horizontal and pendulum values ​​will also change accordingly. For the long and thin shafts, the variation of the swing is more obvious. The positioning pin between the upper frame and the base, the motor and the base must be placed in the original position and cannot be misplaced. When placing the locating pin, turn the locating pin so that it naturally falls to the maximum depth before pinning. Because the unit has achieved a good fit between the positioning pin and the pin hole after a period of operation, if the positioning pin is misplaced, the motor may be misaligned, affecting the level and concentricity of the fixed part. PVC SG-8 Resin Suspension Grade Pvc Resin Powder,Pvc Sg-8 Resin Powder,Pvc Sg-8 Resin Suspension Grade,Whiteness Color Pvc Resin Prowder Yibin Tianyuan Group , https://www.ybtyco.com