Aaon Packaged Rooftop Unit RN-031

Inspect the Air Seals and Wheel Drive Components

Select the ASHRAE Class of Air for the environment

Clean the energy transfer media

Is the Energy Recovery Wheel operating smoothly after cleaning?

Describe any issues found during inspection or cleaning

Aluminum Wheel Drive Components Inspection

Inspect the drive belt for the following conditions

Does the belt show signs of mechanical damage?

Is the belt converging correctly on the wheel pulley?

Does the belt pass freely without encountering obstacles inside the housing?

Unclip the belt using pliers and remove the necessary segments to increase tension.

Connect the shortened belt ends by inserting the protruding tongue through the hole of the other half of the belt.

Shut down operation of the unit

Close both shut-off valves to isolate the suction filter

Reclaim the refrigerant from the suction filter section

Remove the bolts from the suction filter end plate

Remove the pleated filter assembly

Replace the suction filter end plate and bolts

Ensure a trained, qualified service technician checks the unit.

Clean condenser coil at least once a year.

Is there debris or dirt/grease build-up requiring more frequent cleaning?

Follow proper cleaning procedure to avoid coil damage.

Document routine cleaning of microchannel coils with factory provided e-coating.

Aluminum Wheel Air Seals Inspection

Check condition and tightness of non-contact and brush seals.

Inspection of Fans, Evaporator Coils, and Filters

Inspect the following components

Is the unit located in a coastal or industrial environment?

Perform a clean water rinse on the coils

Describe any issues encountered during coil cleaning

Has the electrical power to the unit been shut off?

Inspect all air filters for condition and cleanliness