Original message
| mickabersdad
 |  "Slow moving condenser fan."
, posted Fri 12 Sep 13:58  
Can the lack of air being drawn through condenser coils cause the motor to run slower than normal? I have replaced the capacitor and the motor. I do believe the coils are dirty, but have not been able to clean them as of yet. It seems to me that the motor is running as slow as the original one, and my thought is that proper air flow allows fan to spin faster. Thanks in advance for any input.
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Replies:
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| lovo127
| "Re(1):Slow moving condenser fan." , posted Tue 16 Sep 21:24
if the motor was replace what type do you used factory motor for the unit by model n serial numbers or a generic or rescue if that is the case make sure is wired correct
any help counts
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| | mickabersdad
| "Re(2):Slow moving condenser fan." , posted Wed 17 Sep 19:19
I pulled a fan, top and all, from an identical unit on the property. Checked second motor before moving from one condenser to the other. Double checked wiring; ok. Found second motor running a little faster than the first, but still getting bad pressure readings (65 Low, 400 High.
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| Jojo98
| "Re(1):Slow moving condenser fan." , posted Fri 12 Sep 14:33
Poor air circulation causes high refrigerant temps. The coil would have to be a wall of dirt, and then the A/C safeties wouldn't allow compressor to run. I would wager that you have something else going on.
Ensure the motor is wired properly, be certain that Common terminates at Common, Run terminates at Run ,and Start terminates at Start. That you have the proper voltage and mirofarad capacitor, and that it is wired properly. That you have two phases of power. Check voltage and amp draw; refer to the motor data plate for specs. A fan prop with too great a pitch will slow down a motor as well. An overloaded or undervoltage motor will be hotter than damnit after a few minutes of running, open the A/C disconnect and feel the body of the motor.
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