YVFE4 132S-2/4/6/8 IE4 VF 3-Phase Asynchronous Motor

Common faults and troubleshooting methods are as follows when this series of motor fails during the operating process.

If the motor bearing is over heated, possible reasons are: 1) bearing failure; 2) improper filling of bearing grease or poor quality; 3) the coupling is asymmetric with the center or the pulley is not tight enough; 4) shaft and bearing are matched too loose or too tight; 5) the bearing is matched too tight with the end cap; 6) the end caps or bearing caps on both ends of the motor are not assembled properly. Relevant solutions are: 1) replace the bearing; 2) replace the grease with the filling capacity of 1/2~2/3; 3) calibrate the coupling or adjust belt tension; 4) spray metal if too loose and grind again if too tight; 5) insert steel sleeve in the end cover if too loose and process the bearing chamber if too tight; 6) reassemble the motor.

If the motor has excessive temperature or smoke during operating, reasons maybe: 1) overload; 2) high ambient temperature; 3) low supply voltage or connection error; 4) single-phase operation of the motor; 5) poor ventilation; 6) stator winding earthing or turn-to-turn, interphase fault; 7) broken bar of squirrel cage rotor; 8) stator and rotor rubbing. In this condition, solutions as follows can be adopted: 1) detect the current of motor stator with tong-type ammeter. If overload, select a large motor or reduce the load; 2) lower the ambient temperature or reduce the load; 3) check the power supply, voltage and connection, reduce the load or stop; 4) check electrical connections to eliminate phase failure; 5) remove dirt and debris from air inlet and outlet; 6) check the stator windings, repair or replace them; 7) replace the rotor; 8) check assembly quality, bearing wear and so on.