Aaon Rooftop Unit RL-155

Shut off all electrical power to unit to avoid shock hazard or injury from rotating parts.

Ensure the following components are clean

Inspect unit interior at the beginning of each heating and cooling season.

Is additional cleaning required based on operating conditions?

Evaporator Coil Inspection and Cleaning

Inspect evaporator coil for obstructions to air flow

Clean evaporator coil if necessary

Condenser Coil Inspection and Cleaning

Inspect condenser coil for obstructions

Clean condenser coil annually or as required by location or outdoor air conditions

Check condensate drain at start of cooling season

Clean condensate drain if necessary

General Unit Surface Inspection

Complete general inspection of the unit surface

Check for surface corrosion in spot areas

Wire brush and clean thoroughly any corroded areas

Resurface cleaned areas with rust inhibitive paint

Turn off power to the unit before opening the access door

Filter Inspection and Replacement

Inspect the following for obstructions to air flow

Access the filter section through the filter section door

Action to take based on filter condition

Ensure all filters are in place before operating the unit

Remove contaminants from exterior

Ensure motor air inlet and outlet are open

Blow out interior of open motors with clean compressed air at low pressure

Ensure original clearances are held

Ensure parts replacements are exact duplicates or approved equals

Confirm Underwriters’ Label is valid