Aaon Rooftop Unit RL-075

Pump Direction and Rotation Check

Ensure pump operates in the direction indicated by the arrow on the pump casing.

Has the motor lead been disconnected since the last check?

Check rotation each time motor leads have been disconnected.

Electrical Connections and Specifications

Check all connections of motor and starting device with wiring diagram.

Check voltage of line circuit with motor name plate.

Check phase of line circuit with motor name plate.

Check frequency of line circuit with motor name plate.

Turn off power to the unit before opening the access door

Filter Inspection and Replacement

Inspect the following for obstructions to air flow

Open the filter section door to access the filters

Replace or clean filters with the same size as indicated on the filters

Ensure all filters are in place before operating the unit

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

Ensure the following components are clean

Inspect unit interior at the beginning of each heating and cooling season.

Is additional cleaning required based on operating conditions?

Turn off power before cleaning blower wheel

Inspect blower and blower section for cleanliness

Is the blower and blower section clean after inspection?

Shut off water to float valve and open the drain connection for flushing of the sump

Water Level and Distribution System

Inspect the water distribution system to ensure nozzles and spray orifices are functioning correctly