Causes and treatment of abnormal noise in motor operation:
RELEASE：admin TIME： 2018-08-11 BROWSING： 558SECOND
1. When the stator and rotor friction, will produce harsh "click" friction sound, which is mainly caused by bearing failure. Check the bearing and update the damaged personnel. If the bearing is not damaged, the bearing can be inserted or replaced through the inner or outer rings.
2, the phase of the motor is very loud. You can disconnect and re-close to see if it starts properly. If it doesn't start, there may be a break of the fuse circuit. The contact between the switch and contactor is not connected and there will be a phase failure operation.
3, when the bearing is seriously short of oil, the sizzling sound can be heard from the bearing chamber. Bearings should be cleaned and new oil added.
4, the wind knife touches the shell or has the impurity, produces the impact sound. Blades should be modified to remove debris around the blade.
5. When cage rotor guide rod is broken or winding rotor winding joint is broken, sometimes high or low "buzzing" sound, speed is also slowed down, current increases, should be checked and treated. In addition, some motor rotor and stator length matching is not good, such as stator length than rotor length is too long, or end cover bearing bore wear too large, rotor axial movement, will also produce "buzz" sound.
6. Stator winding head and end wiring error, yelling, speed down, should be checked correctly.
2, the phase of the motor is very loud. You can disconnect and re-close to see if it starts properly. If it doesn't start, there may be a break of the fuse circuit. The contact between the switch and contactor is not connected and there will be a phase failure operation.
3, when the bearing is seriously short of oil, the sizzling sound can be heard from the bearing chamber. Bearings should be cleaned and new oil added.
4, the wind knife touches the shell or has the impurity, produces the impact sound. Blades should be modified to remove debris around the blade.
5. When cage rotor guide rod is broken or winding rotor winding joint is broken, sometimes high or low "buzzing" sound, speed is also slowed down, current increases, should be checked and treated. In addition, some motor rotor and stator length matching is not good, such as stator length than rotor length is too long, or end cover bearing bore wear too large, rotor axial movement, will also produce "buzz" sound.
6. Stator winding head and end wiring error, yelling, speed down, should be checked correctly.
