A detailed Blower and Fan QUARTERLY preventive maintenance checklists
I. Safety Precautions
II. Visual Inspection
- Inspect the exterior surfaces for scratches or dents.
- Look for any exposed wires or loose connections.
- Check for signs of deterioration in plastic or rubber components.
- Look for rust spots or flaking paint on metal parts.
- Check the integrity of mounting brackets for signs of wear.
- Ensure that fasteners are secure and not corroded.
- Check for oil or grease spots beneath the unit.
- Inspect seals and joints for signs of leakage.
- Verify that all drainage systems are functioning properly.
- Remove any visible debris or obstructions.
- Check filters for dirt accumulation and replace if necessary.
- Inspect airflow paths to ensure they are clear.
- Look for uniformity in blade shape and size.
- Check for signs of wear around blade edges.
- Ensure blades are securely attached to the motor.
- Verify that units are level and straight.
- Check that all mounting points are tight and secure.
- Ensure there is no misalignment that could cause wear.
- Listen for irregular sounds during operation.
- Monitor vibration levels using appropriate tools.
- Check for loose components that may contribute to noise.
- Inspect duct seams for gaps or leaks.
- Check for signs of wear or corrosion in duct material.
- Ensure connections are tight and secure.
- Check for cracks or breaks in seals.
- Ensure gaskets are properly fitted and intact.
- Replace any damaged seals or gaskets as necessary.
- Look for discoloration on the motor or wiring.
- Inspect insulation for signs of burning or melting.
- Ensure cooling fans are functioning properly.
- Check for any loose or missing screws.
- Ensure guards are free from cracks or damage.
- Verify that guards are installed correctly.
- Check for droppings or nests near the blower.
- Inspect for any entry points or gaps.
- Ensure proper pest control measures are in place.
- Check for fading or damage on safety labels.
- Ensure signs are positioned where they are visible.
- Replace any illegible or damaged labels.
- Remove any items that could obstruct airflow.
- Ensure access to the unit is clear for maintenance.
- Check for any hazards that could pose a risk.
III. Mechanical Inspection
- Use a torque wrench to check tightness.
- Refer to the manufacturer's manual for specifications.
- Ensure no fasteners are stripped or damaged.
- Re-torque any loose fasteners as necessary.
- Conduct a visual inspection for visible damage.
- Check for any build-up of debris or residue.
- Use a balance tool to assess blade balance.
- Replace any damaged blades immediately.
- Inspect mounts for cracks or signs of fatigue.
- Ensure bearings are seated correctly without play.
- Listen for unusual noises indicating wear.
- Replace any misaligned or worn components.
- Check belt tension using a tension gauge.
- Look for cracks or fraying on the belts.
- Ensure belts are aligned with pulleys.
- Replace any worn or misaligned belts.
- Examine surfaces for rust, cracks, or dents.
- Check seams and joints for any signs of separation.
- Look for any paint deterioration indicating wear.
- Ensure all mounting points are intact and secure.
- Run the fan and listen for abnormal sounds.
- Use a vibration meter to assess vibration levels.
- Inspect mounting surfaces for stability.
- Check for loose components that may cause vibration.
- Inspect the shaft surface for scratches or grooves.
- Check for signs of rust or corrosion.
- Ensure the shaft is straight and not bent.
- Look for any evidence of previous repairs.
- Check for cracks or excessive wear on the coupling.
- Verify that the coupling halves are aligned.
- Look for any debris that may hinder operation.
- Ensure that the coupling is securely fastened.
- Check oil levels at all lubrication points.
- Apply lubricant as specified in the maintenance manual.
- Inspect for leaks around lubrication fittings.
- Clean any excess lubricant from surfaces.
- Inspect fins for dirt, dust, or debris buildup.
- Ensure fins are straight and not damaged.
- Check airflow around the fins for obstructions.
- Clean fins as needed to maintain airflow.
- Use an anemometer to measure airflow direction.
- Compare airflow direction to design specifications.
- Look for any blockages in the airflow path.
- Adjust fan settings if necessary to correct direction.
- Manually operate dampers and louvers to ensure they move freely.
- Check for any obstructions that may hinder movement.
- Lubricate moving parts if necessary.
- Inspect for wear or damage that may affect operation.
- Inspect guards for cracks or damage.
- Ensure all fasteners are tight and secure.
- Check for proper fit and alignment of guards.
- Verify that there are no missing components.
- Check brackets for rust or physical damage.
- Ensure all bolts and fasteners are tight.
- Inspect for signs of bending or stress.
- Look for any signs of excessive movement during operation.
Use in Manifestly