A detailed Fan Coil Unit ANNUAL preventive maintenance checklists
1. Safety Precautions
2. Visual Inspection
3. Filter Maintenance
4. Coil Cleaning
5. Fan Inspection
- Inspect blades for dust and debris.
- Use a soft brush or cloth to clean.
- Avoid using abrasive materials to prevent damage.
- Ensure blades are dry before reassembly.
- Listen for rattling or grinding sounds.
- Check for overheating or excessive vibration.
- Look for visible wear on motor casing.
- Document any abnormal findings.
- Refer to manufacturer's lubrication schedule.
- Use appropriate lubricant type and amount.
- Avoid over-lubrication to prevent damage.
- Clean excess lubricant from exterior.
- Examine all screws on the fan assembly.
- Tighten any loose screws securely.
- Replace any missing screws with appropriate fasteners.
- Check for signs of wear on screw threads.
- Inspect the alignment between the fan and motor shafts.
- Adjust the positioning to eliminate misalignment.
- Use a level to verify horizontal alignment.
- Ensure all mounting brackets are secure.
- Refer to manufacturer specifications for blade clearance.
- Use a caliper to measure the tip clearance.
- Adjust fan positioning if clearance is inadequate.
- Document measurements for future reference.
- Examine the shroud for rust or corrosion spots.
- Look for cracks or dents in the housing.
- Clean any corrosion using appropriate methods.
- Replace the shroud if damaged beyond repair.
- Turn on the fan and observe the rotation direction.
- Confirm it matches the specified direction.
- Reverse wiring connections if rotation is incorrect.
- Ensure the fan operates smoothly after adjustment.
- Inspect all wiring for fraying or damage.
- Check for corrosion on terminals and connectors.
- Clean connections with a suitable electrical cleaner.
- Replace any damaged wires or connectors.
- Inspect the fan guard for tightness and stability.
- Remove any debris or obstructions around the guard.
- Ensure there are no gaps that could allow foreign objects.
- Confirm that the guard is compliant with safety standards.
- Listen for unusual noises while the fan is running.
- Observe the fan for excessive shaking or wobbling.
- Identify and correct any imbalances in the fan assembly.
- Document any vibration issues for follow-up.
- Test each speed setting to ensure proper function.
- Check for smooth transitions between speed settings.
- Inspect VFD settings against manufacturer recommendations.
- Document any irregularities in operation.
- Record all inspections and measurements taken.
- Note any repairs performed during the inspection.
- Maintain a detailed log for future maintenance checks.
- Share findings with relevant maintenance personnel.
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