Switching 110v motor with drum switch to 220v

[superkonr]

Hello all,
My lathe has a 1hp dual voltage single phase motor on it with a drum type reversing switch. It's hard to see the label but it's an older Chicago Electric motor, I can try and get the model number later if needed.

It's currently set up for 110v and everything works. I need to change it to 220v. The label on the motor tells how to change to 220v but do I need to do anything to the drum switch wiring?

All the wires are the same color and half aren't labelled, and it's a PITA to get to the junction box on the thing. If I need to mess with the drum switch I was hoping someone might have a simple way to swap wires based on how it's hooked up now.

Thanks for your time

 

[BillK]

Cant help with your question. Just curious why you need to change it to 240 ?

 

[whateg01]

Pictures would help. Pictures of the existing wiring, for example

 

[The Cobbler]

I am not sure. it is likely different, because the wires from the drum switch go to the motor to reverse it.
my drum switch on my lathe is backwards, forward is revere & visa versa. I've looked at it a few times thinking of fixing it, but there's way too many wires in it for me, especially when it works as it is .

 

[walta]

Why do you want to change the motor voltage?

The work output of the motor will be exactly the same.

Once the motors gets to be 2 HP or larger you can install smaller gages wire and lower the install costs.


Walta

 

[superkonr]

Ok finally got the all the wires traced. Here is the tag on the motor.


Now here is a crude drawing of how it's all connected on low voltage


Now here is how the motor tag says it should be wired on high voltage. My problem is how do I wire the drum switch to accomplish this? I have a main switch on the lathe but I'd still rather run both hot wires through the drum switch so that there is absolutely no power to the motor when the drum switch is in neutral. Or am I stuck having ONLY 'hot 2' running through the drum sw?

 

[superkonr]

OK I figured out how to make it work but post 4 is always hot, any way to do this where I can have both 'hots' disconnected when the drum switch is in 'neutral'?