Aaon Packaged Rooftop Unit RN-030

Record the entering air temperature

Is the entering air temperature above 3.3°C (38°F)?

Verify compliance with safety requirements

Check the sealing of water piping entries into the unit

Describe any issues found during inspection

Inspect blower wheels for excessive dust build up

Is cleaning of blower wheels required due to dust build up?

Clean blower wheels if required

Verify that all components are functioning correctly after cleaning

Set unit controls to cooling mode of operation with supply fans on

Is the fan operating in the correct direction?

Is the compressor operating correctly?

Is the compressor rotating correctly?

Ensure all necessary equipment and materials are available

Select the cleaning acid to use

Pump the cleaning liquid through the exchanger

Is the exchanger frequently cleaned?

Rinse the heat exchanger with clean water

Select the neutralizing solution to use before the last rinse

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

Ensure all components are securely fastened