Aaon Packaged Rooftop Unit RNA-008-A-0-1-FAAN-00A

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

Gain access to the energy recovery wheel

Brush foreign material from the face of the wheel

Prepare a 5% solution of non-acid based coil cleaner or alkaline detergent with warm water

Wash the segments or small wheels in the prepared solution

Soak segments in the solution until grease and tar deposits are loosened

Rapidly run finger across surface of segment to separate polymer strips for better cleaning action

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

Remove pulley from motor drive shaft

Support weight of drive motor and loosen and remove (4) mounting bolts

Install replacement motor with hardware kit supplied

Select the areas applicable for this procedure

Gain access to the aluminum energy recovery wheel

Remove the energy recovery wheel from the unit

Remove small foreign materials using one of the following methods

Use compressed air at a distance of at least 0.08 m (2 ft) from the wheel

Ensure pressure is not too high to avoid damaging the aluminum media

Use water at a distance of at least 0.08 m (2 ft) from the wheel