Air Handling Unit PM Checklist (Direct Drive, Semi-Annual)
by Botha CG, from the Community
Keep your AHU running efficiently with this semi-annual preventive maintenance checklist for direct drive units. It outlines required tools and safety steps, including lockout tagout and refrigerant handling, then guides technicians through inspection and service tasks: clean grilles and dampers; check and replace filters; inspect louvers, bird screens, and mist eliminators; clear condensate drains and treat pans; verify temperatures and pressures; note abnormal noise, vibration, or leaks; and restore the unit to service. Use the work order section to log time and record results in the equipment history.
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