SWI: Variable Frequency Drive (VFD) Preventive Maintenance
This procedure outlines the required tasks for performing periodic maintenance on variable frequency drives (VFDs) in the facility. It has been specifically designed to be brand-agnostic and can safely be applied to all drives.
Hanwha Qcells - Cartersville Utility
12/05/2025
SWI: Variable Frequency Drive (VFD) Preventive Maintenance
This procedure outlines the required tasks for performing periodic maintenance on variable frequency drives (VFDs) in the facility. It has been specifically designed to be brand-agnostic and can safely be applied to all drives.
Procedure Max Score: 100
Operational Checks
Verify HMI/keypad is operational and displays properly.
Review drive event logs and document abnormal findings, if any.
Compare parameter settings to baseline configuration and document discrepancies, if any..
VFD External Inspection and Maintenance
Verify ambient temperature is within drive specification (below 120F).
Verify no obstructions exist that impede cooling fan airflow.
Inspect enclosure gaskets and filters for damage.
Verify enclosure is undamaged and conduit connections are tight and properly sealed.
VFD Internal Inspection (LOTO Required)
Inspect for discoloration, warped components, soot, or corrosion.
Verify internal cooling paths are unobstructed.
Verify cooling fan operation and correct rotation.
Inspect heat sink for bent fins or other damage.
Inspect DC link for swelling or damage (without touching components).
Inspect grounding and bonding.
VFD Internal Maintenance (LOTO Required)
Post Maintenance Closeout
Record any additional issues or abnormalities identified during the inspection
Sign off on the completed maintenance procedure
Click here to sign
Source: Hanwha Qcells - Cartersville Utility (Community Member)