r/AirCompression • u/KillerMiller595 • Sep 02 '26

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Can anyone help me out before I just resort to getting a new motor? Motor spends freely, new capacitors that tested good, pressure switch looks fine (no burn marks or anything. I’m stumped, would appreciate any help I can get. Century 7-177849-20 115/230v 19.0/9.5 Amp

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2

u/penguinpower81 Sep 02 '26

Are you positive the voltage is correct? Caps are wired correct pull the back of the motor off and check the centrifugal switch. Make sure the contacts are not welded together.

2

u/ToronadoBubby Sep 02 '26

Seems like an open start winding. I would test the winding for short to ground or open.

1

u/New-Key4610 Sep 02 '26 edited Sep 02 '26

bad starting switch contacts in motor looks like a century electric compressor motor. these parts are not available

1

u/ElectionBig713 Sep 03 '26

Spin the motor, if it starts then its a cap or centerfugial switch