Quick Overview of Effective Electrical PM Inspections

Tor Idhammar

The purpose of an electrical preventive maintenance program is to reduce the potential for a serious electrical interruption.

Basic rules that apply to all electrical assets:

• CLEANLINESS
• Keep it DRY
• Keep it TIGHT
• PREVENT FRICTION

Do you know what to look for when inspecting your electrical assets?

When inspecting the operating mechanism of an air circuit breaker:

• Inspect for loose, broken, worn, or missing parts (refer to the manufacturer’s schematic for any needed parts).
• Examine the moving parts for excessive wear. Ensure that operating mechanisms are functioning correctly (no binding, hanging or delayed action).
• Make sure that lubrication is done in accordance to the manufacturer’s specs.
• Ensure that mechanisms are cleaned, correctly lubricated, and that all bolts and screws are secured properly. Repair or replace as needed.