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MaineZJ
02-06-2005, 04:06 PM
Got a 60 gal upright air compressor.
The motor looks similar to this:
http://www.electricmotorwarehouse.com/IMAGES/B385.gif
runs off 230V.

Question, what are the 2 units attached to the top of the motor, and if one failed would the motor sound like it was straining (cause it's only running off 110?)

OverkillZJ
02-06-2005, 04:19 PM
could they be solenoids?

Jim311
02-06-2005, 05:56 PM
Flux capacitors.

MaineZJ
02-06-2005, 06:19 PM
Flux capacitors.

Thanks, if I wanted a shit answer I would'a asked on NAGCA

rubicondave33
02-06-2005, 06:26 PM
They probably ARE starting capacitors for the motor. If one of them failed, the motor may still start and it probably would sound like it was working harder.

MaineZJ
02-06-2005, 06:30 PM
thank you. I knew some compressors used CAPs to get em spinning, but I wasn't sure if they were caps, condensors, or some funky soleniod.

OverkillZJ
02-06-2005, 08:28 PM
thank you. I knew some compressors used CAPs to get em spinning, but I wasn't sure if they were caps, condensors, or some funky soleniod.

I can see why they would use caps to help get it started, but I don't think that would explain why it's running funny? Unless they're wired in-line and not just as a reserve to kick start, in which case your motor could be getting a diffent voltage than is optimal...


Things that make you go "hmmmmmmmm"

MaineZJ
02-06-2005, 09:22 PM
I was thinking that if one died, then the 230v motor would be running off 115v (and there fore always sounding like it's got a heavy load)

rubicondave33
02-06-2005, 09:34 PM
It's been awhile since I've worked around any single-phase motors, but I believe the motor on your compressor is a capacitor start- capacitor run motor.
Here is a link to a site that describes the operation of different types of motors.
http://www.iprocessmart.com/leeson/leeson_singlephase_article.htm

Most of the stuff I get into is installation of new equipment and it's all 3 phase
Hope the link helps.