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PARTS OF THE CONDENSING UNIT:

Condenser Fan Motor:

Motor and blade pic These types of motors are usually rather small in horsepower (1/10th to 3/4). They are most often sealed on the ends and sides to keep out water, etc. and if they point upward with the shaft, then a rain shield is added to help keep the water out of the bearing. Often these bearing are also sealed and cannot even be oiled. More often there is no real bearing, but rather is a bushing. This type surely needs oiling more often. Usually once a year is fine. If it is a heat pump type unit that runs all year, then it may require more oiling.

If it "oils", then there is provided a way. Usually, a passageway from the bearing or bushing extends to the side of the motor at each end--one for each bearing. It will have a metal or plastic plug and will rarely have a spring-loaded cap except on some really old motors. Simply remove the plug and apply the oil. Apply only the equivalent of five "eye dropper" drops per oil port on each bearing and no more. Too much oil will overflow into the WINDINGS and soften or weaken the enamel coating and the motor may short out in a few years. Replace the plug. Always replace the plug to keep out any dirt. Dirt is a killer for bearings so use clean oil and keep the tip of the applicator clean.

These motors run pretty hot to the touch. Normal length of comfortable touch of a motor that had been running might be about one or two seconds before discomfort. This is normal. Anything less than this amount of time would indicate an overheating problem. The bearings might be bad or the motor might be internally damaged electrically or mechanically. It might have a bad capacitor (located in the control panel and discussed later). It might just be so dirty, that it overheats. Clean it. Sometimes, the condenser coils are so clogged that the air is excessively hot coming over the motor. Keep these clean also. These motors have an internal thermostat that switches them off if they get too hot and then when it cools it will reset again. So a motor might run for a while, shut off, and run again. A compressor will not run long without the fan running. It also will shut off, cool, and run again.

Here is a better view of another motor.

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Other Parts Of The Condenser
Blade Assembly Motor Mounting Bracket
Capacitors Contactors Condenser Coils
Line Valves Compressor Feet Compressors
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