Reconfiguring voltage from 460 to 230 on bandsaw.

Just picked up this bandsaw. I think I have this figured out but would like second opinions from those with more experience.

1: the motor is a 2 HP, 2.9 amps at 460/5.8 at 230, 3 phase. I have already reconfigured the wiring to 230v.


2: it has an external transformer with a 120 outlet attached for the light. Picture. I reconfigured the “H” side from 460 to 230. The “X” side was already configured to 120 so I left it as is.


3. Looks like an internal transformer in the box. See pictures. Haven’t done anything here. I assume just need to reconfigure as the diagram shows?



4: the thermal fuses? It currently has E37 and I’m thinking I need E47 with the 5.8v at 230.


The saw also has a welder that I’m not dealing with for now but will probably have some questions later.

Any help confirming or correcting me is greatly appreciated!

Thanks
Bob

Looks like your on the right track. There is an Allen Bradley overload relay as well.But dosen't look like its wired to anything? I suggest disconnecting the welder until you deal with it, so it doesn't get damaged from low voltage.

SAF Ω

Correct, there are no wires to the other overload. The saw does not have a factory welder so I’m thinking it may have been for that. The welder is currently disconnected till I get the saw running.

Thanks

I have rewired several bandsaws to run on 240 Volts. All the blade welders in those machines were single voltage.

If it is single voltage, you need a much larger transformer than you have in the machine.

Bill

That AB OL relay comes off the load side of the main starter, so most likely it fed something that was intended to run at the same time, like a lube pump. Technically that's not the legal way to do that, but it was probably a user addition at some point.

Later came sooner than I thought. Ready to talk about the welder wiring.

The welder. Not a built in but an add on. It hangs off the back of the saw and I would like to move it. Makes the saw too long in it current configuration.


The wiring to the welder is attached directly to the line wiring coming in to the saw.


The 3 wires run out the box up to a disconnect box.


Then to a second disconnect box where a cord (where only 2 wires are used) comes out, and has a plug-in to power the welder.


Other than the plug wire all external wiring has been removed per the company policy where it came from.

I would like to mount the welder where the first disconnect is. It would be high but I will not be welding many blades. But want it to work.

So what would be the problem with removing both disconnects and hooking the plugin directly to the feed line wires in the main box? Then I can just plug and unplug as I need the welder. The saw is not in an industrial setting so I’m thinking I don’t need the disconnects anymore. But...I’ve been known to be wrong!!!

Thanks, Bob

Plug picture.

Jraef: these saws have an optional dust blower. Suppose that’s what it’s for?