A detailed Air Cooled Transformer MONTHLY preventive maintenance checklists

1. Visual Inspection

  • Check for dents, scratches, or cracks on the casing.
  • Look for signs of wear, such as faded paint or exposed metal.
  • Remove any debris or obstructions around the transformer.
  • Ensure that the surrounding area is clear for airflow.
  • Inspect for oil or coolant spots on the ground.
  • Check for leaks around seals and fittings.
  • Confirm that all labels are clear and readable.
  • Ensure identification plates are securely attached.
  • Examine mounting brackets for rust and stability.
  • Ensure the transformer is securely anchored.
  • Check ventilation openings for dust or dirt blockages.
  • Inspect fans for operational damage or obstructions.
  • Look for rust on metal components.
  • Inspect painted surfaces for bubbling or flaking.
  • Check for discoloration or warping on materials.
  • Look for burnt or melted components.
  • Inspect insulation for cuts, fraying, or exposure.
  • Ensure wiring is intact and properly secured.
  • Verify that protective covers are present and secured.
  • Check access panels for proper installation.
  • Look for droppings or nests indicating pests.
  • Inspect the area for signs of rodent activity.
  • Ensure drainage paths are not blocked.
  • Check for proper slope to prevent water pooling.
  • Inspect grounding connections for tightness.
  • Look for signs of corrosion on grounding points.
  • Check for moisture on the transformer surface.
  • Inspect nearby areas for dampness or condensation.

2. Electrical Connections

3. Cooling System

4. Functional Testing

5. Documentation and Reporting

6. Safety Checks

7. Cleanliness and Environment

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