Aaon Packaged Rooftop Unit RNA-025-C-0-3-HAAE-00A

Ensure the machine is turned off and disconnected from power

Remove any covers or guards to access the belt

Measure the current belt tension

Is the belt tension within the recommended range?

Adjust the belt tension if necessary

Recheck the belt tension after adjustment

Ensure all necessary tools are available

Is the water temperature less than 54.4°C (130°F)?

Is the water pressure less than 689.5 kPa (100 psig)?

Remove surface loaded fibers or dirt with a vacuum cleaner or soft non-metallic bristle brush

Was the tool applied in the direction of the fins?

Perform a low velocity clean water rinse on the coil

Inspection of Purge Sector Condition

Check the condition of the purge sector

Verify the rigidness of the purge sector

Check the cleanliness of the purge sector

Is cleaning with compressed air required?

Use compressed air to clean the purge sector if required

Measure the distance of the sector against the recovery wheel matrix

Rinse the coil completely with water

Use a hard spray but be careful not to bend or damage the fins

Spray from the fan side of the coil

Spray and rinse the coil from the face

Is the water pressure below 689.5 kpa (100 psi)?

Is the nozzle 15.25 centimeters (6 in.) and perpendicular to the coil face?

Application Examples and Considerations

Ensure the system is turned off

Gather necessary cleaning tools and materials

Check for visible dirt and debris on the wheel

Is there any visible damage to the wheel?

Clean the wheel using a vacuum cleaner or soft brush

Use a mild detergent solution for stubborn dirt