Engraving machine motor after a failure, first of all, the motor model structure, usage, time, maintenance history, etc. general understanding by observing and asking, failure to understand the performance, such as starting conditions, operating conditions, especially some typical anomalies such as vibration, noise, heat, smoke and odor smelling odors, so as to repair the fault as a starting point.   

1, the engraving machine motor can not start without the sounds    Check: the situation fuse and power is applied to the line to be checked, and then check on the line, switches, starting equipment, mainly to see the open circuit conditions and good contact extent possible reasons: no power supply, two-phase or two-phase fuses blown, two-phase or three-phase power line short-circuit, two-phase or two-phase switching over or starting equipment is bad, the processing method, replacing a fuse, identify poor contact points are connected and fixed.   

2, the motor starter can not, but there is noise issue    After power is applied to the case and the fuse line to check and see if the rotation gear, main view load machine has not been caught, the stator and rotor have no mutual friction, pay attention to the case of inspection of the bearing, clear the fault: Check , and then the situation winding checked to see whether the disconnection. Cause: The power cord has a phase circuit, the voltage is too low, there is a phase blown fuse, load machine quilt stuck stator and rotor mutual friction phenomenon occurs; the bearing is damaged.