Help with Wiring a furnace squirrel cage blower

Joined
May 15, 1999
Messages
720
I am installing a blower by the grinders to pick up most of the garbage they generate.

The motor has four wires, one each Red, White, Black and Blue. There are two wires from another part of the motor that run to a thing that looks like a flattened coil from a car.

The motor is marked:
AO Smith Ser 3J89
HP 1/3
RPM 1050 3speed
HZ60 PH1
V120 Type FLL
Thermally Protected Type C

I have a Black, a White and a Green coming from my outlet.

I would like to hard-wire it to that source so that it always runs on the highest speed.

Thanks for your help,

Dave Evans
Tenino, WA

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Dave, the four wires are probably for two different sets of coils in the motor for two different speeds? is there a chart or marking anywhere on the motor to tell you anything? RPM's ect?

The flat thing is a capacitor to start the motor from a stop, dont disconnect it it willnot start without turning if you disconnect the capacitor.

If you dont get an answer here call an AC supply place or a motor supplier in your area, they should be able to tell you about the color code on the wires.

The red white and blue are the speeds I beleive and the black is the common, but It could be different from the ones I have used in the past...

Also, dont forget to ground the chassis or moto to the ground of your cord... They can build up a good current in um sometimes, especially in dealling with metal dust....

Hope I could be of some help...

Alan...


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If a Man talks in the forest, and there is no Woman around to hear him, is he still wrong?
 
Dave, on A.O. Smith permanant-split capacitor motors the lead connections are usually white-common,black-high speed,blue-med. speed and red is low speed.
This is a one direction motor. So likely your connection will be white to white and black to black. Tape off blue and red. E me at alliedel@pine-net.com if you have more questions.
 
Thanks, Guys. The motor is wired and running fine.
One final thing I learned today from another man was to put a load on the motor. If run without some resistance they burn right on up.
Thanks Ahain,

Dave Evans
Tenino, WA
 
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