Fish On
Hot Rolled
- Joined
- Feb 23, 2014
- Location
- Foley, Alabama
I've got a vertical bandsaw with a 115/230v 1 hp motor, currently wired for 115v.
Recently, it's started a very loud (probably amplified by the thin gauge sheet metal cabinet) vibration or buzzing when under power. Motor still does it with belt removed, so clearly in the motor, not the rest of the saw. And, only under power, not coasting - goes nearly silent as soon as power is cut. If I bump the start switch to keep it up to speed without the switch locking on, it'll buzz only when the start switch is pressed, and immediately stop when power is removed.
Motor spins freely and smoothly - don't think it's a bearing issue being that it's based on power on, not based on RPM.
I'm surmising it's got something to do with the start capacitor circuit staying engaged when it shouldn't, but I'm not familiar enough with the inner workings of electric motors to know where to start looking for that. The start switch on this is just an on/off switch, not an actual motor starter, so whatever it is would be self contained in the motor.
Any suggestions on what to check?
Recently, it's started a very loud (probably amplified by the thin gauge sheet metal cabinet) vibration or buzzing when under power. Motor still does it with belt removed, so clearly in the motor, not the rest of the saw. And, only under power, not coasting - goes nearly silent as soon as power is cut. If I bump the start switch to keep it up to speed without the switch locking on, it'll buzz only when the start switch is pressed, and immediately stop when power is removed.
Motor spins freely and smoothly - don't think it's a bearing issue being that it's based on power on, not based on RPM.
I'm surmising it's got something to do with the start capacitor circuit staying engaged when it shouldn't, but I'm not familiar enough with the inner workings of electric motors to know where to start looking for that. The start switch on this is just an on/off switch, not an actual motor starter, so whatever it is would be self contained in the motor.
Any suggestions on what to check?