A detailed ELECTRIC HOIST QUARTERLY preventive maintenance checklists
1. Safety Precautions
2. Visual Inspection
3. Electrical Components
4. Mechanical Components
5. Load Testing
- Attach the rated load securely to the hoist.
- Lift the load to the maximum height.
- Hold the load for a specified duration.
- Record any performance observations.
- Listen for unusual noises during operation.
- Feel for vibrations in the hoist structure.
- Stop the test immediately if abnormalities are detected.
- Document any sounds or vibrations for further analysis.
- Test emergency stop features.
- Check that overload protection activates.
- Verify that limit switches function correctly.
- Inspect safety mechanisms for responsiveness.
- Attach the rated load securely to the hoist.
- Lift the load to the maximum height.
- Hold the load for a specified duration.
- Record any performance observations.
- Listen for unusual noises during operation.
- Feel for vibrations in the hoist structure.
- Stop the test immediately if abnormalities are detected.
- Document any sounds or vibrations for further analysis.
- Test emergency stop features.
- Check that overload protection activates.
- Verify that limit switches function correctly.
- Inspect safety mechanisms for responsiveness.
- Compare load indicator readings with actual load.
- Calibrate the load indicator if discrepancies are found.
- Document the accuracy of the load indicator.
- Test multiple weight settings for consistency.
- Raise and lower the load to test limit switch activation.
- Ensure switches stop the hoist at correct positions.
- Inspect limit switch wiring and connections.
- Replace any faulty limit switches immediately.
- Lift the load to a safe height.
- Release the load control, allowing it to free fall slightly.
- Observe if the load is held securely by the brakes.
- Document the braking response time and effectiveness.
- Measure the time taken to lift and lower the rated load.
- Compare the measured speeds with manufacturer specifications.
- Document any deviations from specified speeds.
- Adjust settings if necessary to meet specs.
- Check all visible wiring for fraying or cuts.
- Inspect connections for corrosion or looseness.
- Look for any signs of overheating or burning.
- Replace damaged wires or connections immediately.
- Test with varying weights to assess performance.
- Record hoist behavior with light, medium, and heavy loads.
- Check for stability under different load configurations.
- Note any changes in performance with different loads.
- Record test conditions, including load weight and environment.
- List any observed issues or anomalies.
- Include time stamps for each test phase.
- Prepare a comprehensive report for review.
- Lower the load slowly to the ground.
- Check if the hoist stops at the resting position.
- Ensure the load is completely released before shutting down.
- Verify that the hoist is in a safe state post-test.
- Cross-check test procedures with safety standards.
- Ensure all personnel are wearing appropriate safety gear.
- Verify that the testing environment is secure.
- Document compliance with all regulations.
- Schedule a follow-up inspection as soon as possible.
- Review documentation from the load test.
- Inspect any components that showed issues.
- Perform necessary repairs or replacements.
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