What was the resolution, replacing the contactor?There's no doubt the forward micro switch isn't sticking. I have a Jet lathe that had a similar issue.
What was the resolution, replacing the contactor?There's no doubt the forward micro switch isn't sticking. I have a Jet lathe that had a similar issue.
The forward micro switch would constantly stick. This being an older machine and other things were going wrong, I stripped the all the contactors and switches and upgraded to a VFD. Was the best choice I could have made.What was the resolution, replacing the contactor?
What is a VFD? I made the problem worse today. I swapped the forward contactor with a spare I had, and the lathe would not start forward or reverse. Swapped the old one back still no forward or reverse. Started checking voltages and see power on the hot side of the contactors. But no low voltage on the transformer. The winding does not seem to be open and there is input voltage. Not sure where to go....The forward micro switch would constantly stick. This being an older machine and other things were going wrong, I stripped the all the contactors and switches and upgraded to a VFD. Was the best choice I could have made.
That is the bad one I took the cover off so I could pull the contactor out.It's the forward contactor that's sticking. Not sure where you can buy replacements- you may have to hunt
I see the two contactors look different- one appears to be missing the top cover-? Could that be the bad one?
-Mark
If you had started the VFD conversion when you started this thread it would probably be done now. Both my lathes have 3 phase motors withThanks, I don't think I am up to a conversion like that maybe in my younger days. I was able to fix (I hope) the nonstop problem. I had swapped out the contactor and the machine would not start in forward or reverse. Swapped the old one back still no good. Started looking and realized a wire was on a spare lug with nothing on the load side. Looking at my pictures and notes the wire should have been on the adjacent lug.
It seems to be working now wait and see. The original problem was somewhat intermittent, it would go away for days at a time. I have to take the old contactor apart to see if I can find where/how it was getting stuck, Hope to find a rub mark or something. Thank all