Central air conditioners rely on fans to blow air through the condenser coils in order to dissipate heat. These fans are subject to the sun’s heat, rain, snow, and other adverse conditions, including dirt and grime. To keep the fan in tiptop shape, these fan motors need maintenance in the form of regular oiling.
In order to oil the motor, you must first turn the power off to the system and remove the fan cage, which holds the fan motor in place. Turn the cage assembly upside down to access the oil ports on the motor. These ports will be located on the top of the motor, just below the fan blade of the motor.
Remove the oil plugs that protect the motor from debris. Each port should be oiled with three drops of all-purpose, three-in-one oil. Spin the fan blade slowly by hand to disperse the oil within the fan.
Now, replace the oil plugs and wipe any excess oil that might have spilled. This process should be repeated each season to ensure proper lubrication and long wear for your fan motor.