Aaon Rooftop Unit RL-170

General Unit Surface Inspection

Complete a general inspection of the unit surface

Check for surface corrosion in spot areas

Wire brush and clean thoroughly any corroded areas

Resurface cleaned areas with rust inhibitive paint

Evaporator Coil Inspection and Cleaning

Inspect evaporator coil for obstructions to air flow

Clean evaporator coil if necessary

Condenser Coil Inspection and Cleaning

Inspect condenser coil for obstructions

Is additional cleaning required due to location or outdoor air conditions?

Check condensate drain at start of cooling season

Ensure the bearing is at normal operating temperature but not running

Select the appropriate grease based on temperature

Add grease to purge the seals without over-lubricating

Confirm that seals are purged and not over-lubricated

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 pump rotation after motor leads have been disconnected.

Electrical Connections and Specifications

Verify 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.

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