A detailed Fan Coil Unit MONTHLY preventive maintenance checklists

1. Safety Precautions

2. Visual Inspection

  • Examine the exterior surfaces for rust or pitting.
  • Inspect joints and seams for signs of wear.
  • Look for any discoloration indicating corrosion.
  • Check for any tears or exposed areas in the insulation.
  • Look for signs of moisture accumulation on the insulation.
  • Ensure insulation is securely attached and not sagging.
  • Inspect the floor around the unit for water puddles.
  • Check connections and joints for signs of dripping.
  • Verify that drainage lines are clear and functioning.
  • Examine the exterior surfaces for rust or pitting.
  • Inspect joints and seams for signs of wear.
  • Look for any discoloration indicating corrosion.
  • Check for any tears or exposed areas in the insulation.
  • Look for signs of moisture accumulation on the insulation.
  • Ensure insulation is securely attached and not sagging.
  • Inspect the floor around the unit for water puddles.
  • Check connections and joints for signs of dripping.
  • Verify that drainage lines are clear and functioning.
  • Inspect all sides of the casing for integrity.
  • Check for any bulging or misalignment in the casing.
  • Ensure that protective coatings are intact.
  • Check that screws and fasteners are tight.
  • Look for any missing panels or covers.
  • Ensure that seals are intact to prevent air leaks.
  • Clear any dust, dirt, or obstacles from the vicinity.
  • Ensure that vents and intakes are unobstructed.
  • Check for any nearby objects that could block airflow.
  • Look for nests or droppings in and around the unit.
  • Inspect for chew marks on insulation or wiring.
  • Ensure that there are no access points for pests.
  • Inspect wiring and connections for discoloration.
  • Check for any melted insulation or components.
  • Ensure that circuit boards show no signs of damage.
  • Check that labels are not worn or faded.
  • Verify that all safety warnings are in place.
  • Ensure labels are properly attached and not peeling.
  • Check that brackets are not rusted or damaged.
  • Ensure all bolts and fasteners are secure.
  • Look for signs of wear or bending in supports.
  • Listen for rattling, humming, or grinding sounds.
  • Observe vibrations; check for loose components.
  • Ensure that no foreign objects are causing noises.
  • Use a level to check the unit's alignment.
  • Look for any tilting or shifting of the unit.
  • Ensure that it is properly secured to its base.

3. Air Filter Maintenance

4. Coil Cleaning

  • Visually check coils for dust or debris.
  • Use a flashlight if necessary for better visibility.
  • Look for any signs of blockage affecting airflow.
  • Gently brush off dust with a soft brush.
  • If using a vacuum, ensure the attachment is appropriate.
  • Avoid damaging the fins while cleaning.
  • Inspect for discoloration or musty odors.
  • Use a mold treatment solution if needed.
  • Follow safety protocols when handling cleaning agents.
  • Visually check coils for dust or debris.
  • Use a flashlight if necessary for better visibility.
  • Look for any signs of blockage affecting airflow.
  • Gently brush off dust with a soft brush.
  • If using a vacuum, ensure the attachment is appropriate.
  • Avoid damaging the fins while cleaning.
  • Inspect for discoloration or musty odors.
  • Use a mold treatment solution if needed.
  • Follow safety protocols when handling cleaning agents.
  • Select an appropriate coil cleaning solution.
  • Dilute as per manufacturer’s guidelines.
  • Apply evenly without oversaturating the coils.
  • Use a hose or pressure washer on a low setting.
  • Ensure all cleaning solution is washed away.
  • Check for proper drainage after rinsing.
  • Look for bent fins obstructing airflow.
  • Carefully use a fin comb to straighten damaged fins.
  • Ensure fins are evenly spaced and aligned.
  • Look for rust or pitting on the coil surface.
  • Check all connections for signs of wear.
  • Document any corrosion or damage for repair.
  • Inspect the drain pan for debris or standing water.
  • Use a cloth or brush to clean the pan thoroughly.
  • Ensure the pan is free from clogs.
  • Inspect the drain lines for blockages.
  • Run water through the lines to ensure proper flow.
  • Clear any obstructions found in the drainage system.
  • Record the date and actions taken during maintenance.
  • Note any issues found and corrective actions.
  • Store the documentation in an accessible location.

5. Fan Operation

6. Drainage System Inspection

7. Electrical Components

8. Thermostat and Controls

9. System Performance Check

10. Documentation

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