Aaon Packaged Rooftop Unit RN-016

Terminate electrical power to the unit

Ensure gas supply pressure is within specified limits

Spray soap solution leak detector on each threaded connection

Check each connection for bubbles indicating leaks

Inspect and tighten joints with bubbles

Rinse piping thoroughly after leak test

Suction Filter Removal Instructions

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

Evacuate the suction filter assembly to 300 microns

Wear appropriate personal protective equipment (PPE)

Inspect the drain pans for moisture and microbial growth

Remove any debris from the drain pans

Clean the drain pans with an appropriate cleaning solution

Is the drain line clear and unobstructed?

Obtain access to the pulley side bearing access plate if bearing access plates are provided.

Remove two bearing access plate retaining screws and the access plate.

Loosen set screw in bearing locking collar using hexagonal wrench.

Tap collar in the direction of wheel rotation to unlock collar using light hammer and drift.

Remove two nuts securing bearing housing to the bearing support beam using socket wrench with extension.

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

Select the cleaning products to be used

Use high velocity water from a pressure washer or compressed air at a very low pressure to prevent fin and/or coil damages.

Ensure no harsh chemicals, household bleach, or acid cleaners are used.

Perform a monthly clean water rinse for coils in coastal or industrial environments.

Document the routine cleaning of e-coated coils to maintain coating warranty coverage.