Have a the motor below is installed in a squirrel cage fan. The fan's output is very low even though the motor is spinning at what appears to be normal speed. Out of curiosity I reversed the motors direction by changing the connection order of (brown,orange,purple,yellow). The fan is now pushing more air, but the motor is spinning very slow, and sounds like it is binding (electrically). The motor also gets much warmer in the reversed direction than before. To verify the fan blade is not the cause of the slow down, I removed it and changed the rotation back and forth. It spins very fast in one direction and slowly in the other. I've also bought a new capacitor, but this didn't help. Same problem exists on all three speeds.
Does this mean the motor is bad, or is there something else I should check out?
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1/3 HP GE Motor
Model: 5kcp39jg-n654
HP: 1/3
Volt: 208-230
Phase: single
Amps: 2.70
RPM: 1075
???: 24X3277722
Capacitor: 5.00/370
Yellow: common
Black: high
Blue: med
Red: low
Brn(both): cap
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First check the rating label, compare the RLA or FLA numbers to the actual running amps of the motor. This will have to be done with the fan compartment cover in place. Your meter should have a hold feature on it to capture and hold this number.
The current reading is normally less than the rating label, if it is at or above the rating label number and when it is running for awhile and gets hot to the touch, it is probably ready to be replaced. This could also be a symptom of a bad capacitor, but you replaced that.
Why were you called in the first place? Has the motor or blower wheel been replaced, was the blower wheel placed in the blower housing correctly?
Good luck on solving the problem.
Trainerguy
QuoteModel: 5kcp39jg-n654
HP: 1/3
Volt: 208-230
Phase: single
Amps: 2.70
RPM: 1075
: 24X3277722
Capacitor: 5.00/370
Yellow: common
Black: high
Blue: med
Red: low
Brn(both): cap
You list a 208-230V motor but mention the yellow wire is the common. There is no common on a 208-230V motor.
What is the model of the furnace?
It sounds like someone replaced a 120V motor with a 208-230V motor.
:angel: