Aaon Packaged Rooftop Unit RNA-013-B-0-3-HAAB-00A

Select the areas applicable for this procedure

Enter the cleaning frequency in years

Inspect the energy recovery wheel for visible dirt and debris

Is the wheel free from any obstructions?

Ensure pressure washer or compressed air is set to low pressure to prevent fin and/or coil damages.

Avoid using harsh chemicals, household bleach, or acid cleaners on e-coated coils.

Select the approved coil cleaner used

Clean the coil with the selected approved coil cleaner following the manufacturer's directions.

Use the approved chloride remover to remove soluble salts and revitalize the unit.

Inspect the coil for any visible damage or residue after cleaning.

Disconnect power to wheel drive motor

Remove belt from pulley and position temporarily around wheel rim

Loosen set screw in wheel drive pulley using a hex head wrench and remove pulley from motor drive shaft

While supporting weight of drive motor in one hand, loosen and remove (4) mounting bolts

Install replacement motor with hardware kit supplied

Install pulley to dimension as shown and secure set screw to drive shaft

Stretch belt over pulley and engage in groove

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

Inspect blower wheels and bands for excessive dust build up

Is there excessive dust build up on blower wheels?

Clean blower wheels if excessive dust build up is found

Check for any vibration or unusual noise after cleaning

Ensure all components are securely fastened after maintenance

Inspect the belt for any visible wear or damage

Is the belt free from visible wear or damage?

Measure the current belt tension

Is the belt tension within the recommended range?

Does the belt require tension adjustment?

Adjust the belt tension if necessary