MWF FEED
15th August 2020, 10:30 PM
The single phase motor on my AL320G lathe runs just fine in forward but just hums when switched to reverse.
I was parting off in reverse with an inverted parting tool when it jammed. Interestingly, it didn't break the parting blade, just locked up solid. It took me no more than a second to kill the power but after clearing the jam the motor only hums when switched to reverse. I would suspect that something got a fright but I am at a loss to know what. As far as I am aware, two wires only need to be reversed to run a 240v motor in reverse, so that should be a simple switching arrangement. However the forward/reverse switch on the lathe looks anything but simple.
Unfortunately the motor rewinding specialist I have used in the past (and trusted - he was old school and knew it all backwards ) has retired, so I can't run it past him.
Anyone run across this before or have any clues as to the problem?
Read the full thread at metalworkforums.com... (https://metalworkforums.com/showthread.php?t=205485&goto=newpost)
I was parting off in reverse with an inverted parting tool when it jammed. Interestingly, it didn't break the parting blade, just locked up solid. It took me no more than a second to kill the power but after clearing the jam the motor only hums when switched to reverse. I would suspect that something got a fright but I am at a loss to know what. As far as I am aware, two wires only need to be reversed to run a 240v motor in reverse, so that should be a simple switching arrangement. However the forward/reverse switch on the lathe looks anything but simple.
Unfortunately the motor rewinding specialist I have used in the past (and trusted - he was old school and knew it all backwards ) has retired, so I can't run it past him.
Anyone run across this before or have any clues as to the problem?
Read the full thread at metalworkforums.com... (https://metalworkforums.com/showthread.php?t=205485&goto=newpost)