Motor Problem

[phantomwarrior1]

Sorry if this is the wrong section, but I thought it fit here better than any other electric sub forum. Now I got a sheldon lathe and it had a dayton motor. We had everything wired up and all it did was humming. It was wired for 220v and running on 220v. So then I played around a little because it seamed just like the starting capacitor was the problem. So I gave it a spin and it looked like it was starting and then it smoked up. Tried again with the same steps as before and it smoked up again. Now when I turn it on it makes no sounds. Did I burn the running capacitor just now too, or did I do something more serious like the windings. The fuses don't look blown, but I have nothing right now to test voltage or amps or anything going through to make sure they aren't. Thanks.

[Al_The_Man]

It sound like the motor is a burn out.
If the start capacitor/start winding is not connected it will draw very heavy current.
If smoke came out, it most likely needs a rewind.
Was this a first time hook-up, or had it been running up to now?
Al.

[phantomwarrior1]

It was a first time hook up. It looked more like it was coming from the capacitors though (the smoke) which is why I asked. How much do rewinds cost on !.5 horsepower motors. Just a range is needed unless I can find it out somewhere else.

[Al_The_Man]

For a Cap to smoke right off the bat would normally be because it was connected across the 220v supply, if it is a cap start only motor, if it has a centrifugal switch, generally if you give it a hard spin and immediately apply power it will go into normal run.
Al.

[phantomwarrior1]

Well, I probably didn't give it enough spin. I tried spinning it, but that's what led to the smoke. I must have not given it a good enough spin then and now I think I have a burned out motor.

[bharbour]

Is there a reset button on the motor? Some motors have a manually reset thermal switch.

BobH

[phantomwarrior1]

Yeah it has one. I already pressed it. It didn't trip though. Does anyone know why it would stop humming though. It would only be a reset switch or a fuse right? If the capacitors both burned and the wiring than those wouldn't stop the humming right? Thanks.

[Al_The_Man]

Do you have an Multimeter or some way of checking continuity across the windings, it is a bit unusual to go open, The run winding is across the supply so there is always resistance there which should be measurable, normally just a few ohms
Al.

[phantomwarrior1]

I changed the fuse and put a new capacitor in. Got the motor wired up and now it works, but only in the forward direction. Before I draw any conclusions, is it possible to burn something on a capacitor induction motor so that it only goes forward. We tried a variety of different connections to get it go reverse, but we couldn't get it. Thanks.

[Al_The_Man]

You have to reverse the start winding connections with respect to the run windings, this is the winding that is fed through the start capacitor.
Al.

[phantomwarrior1]

Okay, so if it starts one way on a capacitor start induction motor, than it will definitely start the other way, just that you have to wire the switch right. Will try when I need to do something the other way. Thanks.