Motors and Drives: Variable Frequency Drive (VFD)--VFD/Motor Maintenance

Part 9 of the Variable Frequency Drives Series describes good practices as well as how to maintain ac motors and variable frequency drives.


  • AC Motor

    • Cast Iron Housing Clean for better cooling convention

    • Fan/Blower screen clear

    • Grease Bearing Schedule

  • VFD

    • Clean environment – NEMA 1 cover, dust affects cooling

    • Start drives occasionally to keep filter caps vitalized

    • Keep surrounding area clear for good airflow

    • Keep temperature in range

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