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The reason why the motor has abnormal noise
Source: China Bearing Network Time: 2014-02-03
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1. When the stator and the rotor are rubbed; a sharp "beep" rubbing sound will occur; this is caused by a bearing fault. The bearing should be viewed; the damaged person is updated. If the bearing is not broken; the bearing is found inside the inner ring. Or outer ring; can be sleeved or replaced with bearings and end caps.
2, the motor is out of phase operation; the hum is uniquely large. It can be turned off and then closed; see if it can start normally; if it can't start, there may be a phase fuse disconnection. The switch and the contactor contact are not connected. The seizure lacks phase.
3, when the bearing is severely short of oil; from the bearing room can hear the "beep" sound. Should remove the bearing; add new oil.
4, the wind blade touches the shell or has debris; emits a sound of impact. The wind blade should be proofed; the debris around the wind blade should be removed.
5. When the cage rotor bar is cracked or the wound rotor winding joint is disconnected; sometimes the high and low "beep" sound; the rotation speed is also slow; the current is increased; the disposal should be checked. Some other motor rotors and stators The length cooperation is not good; if the length of the stator is much longer than the length of the rotor; or the wear of the end cap bearing hole is too large; the rotor will be agitated axially; it will also have a "beep" sound.
6. The first end of the stator winding is faulty; there is a humming sound; the speed is also reduced;
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