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air cooled package units semi annual

Visual Inspection

Inspect the unit for any signs of physical damage or corrosion.

Check for any leaks around refrigerant lines or connections.

Ensure that the condensate drain is clear and free of obstructions.

Examine the electrical connections for wear or damage.

Inspect the condition of insulation on refrigerant lines.

Air Filter Maintenance

Remove and inspect the air filters for dirt and debris.

Clean or replace filters as necessary.

Check the filter housing for any signs of wear or damage.

Ensure the filter is properly installed and sealed.

Coil Cleaning

Inspect the condenser coils for dirt and debris.

Clean the coils using a soft brush or water spray as necessary.

Check for bent fins and straighten them if needed.

Ensure that the coil fins are free of blockages for optimal airflow.

Refrigerant System Check

Check the refrigerant levels and inspect for any leaks.

Measure the suction and discharge pressures with gauges.

Ensure the system is operating within the manufacturer’s specifications.

Inspect the expansion valve and other components for proper operation.

Electrical System Inspection

Check all electrical connections for tightness and signs of overheating.

Test the operation of the contactor, relays, and capacitors.

Inspect the wiring for any signs of wear or insulation damage.

Verify the operation of safety switches and controls.

Operational Testing

Start the unit and listen for any unusual noises.

Check the temperature differential across the evaporator coil.

Monitor the system for proper cycling and operation.

Ensure that all safety and operational controls are functioning correctly.

Documentation and Reporting

Document any findings and maintenance performed in the service log.

Report any issues that require further attention or repairs.

Schedule any necessary follow-up maintenance or inspections.

Review the maintenance history and plan for future servicing needs.

This checklist serves as a comprehensive guide to ensure the efficient operation and maintenance of air-cooled package units on a semi-annual basis.

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