Switch for Rockwell-Delta 46-111?

[underdog]

How do I wire and switch to reverse Rockwell-Delta 46-111?

I'm working on a friends old Rockwell Delta 46-111.
About the only thing he needed was a motor. The original motor was either a 1/3 or 1/2 HP. We found a 3/4 HP off another Rockwell Delta product and the bolt patterns match up perfectly.

http://tinyurl.com/aklzk

Now the only thing he needs is a switch.

After looking at the wiring diagram we realized that the motor can be reversed. So I'm wondering what kind of switch he would need to accomplish this.

Thanks for any tips on this...

 

[arbud]

Got me

Obviously not a lot of us have the answer, Jim. I'd try e-mailing/calling Delta, they may even have the required switch.

 

[Dtoggs]

Reversing lswitch

Howdy. To reverse the motor,the starting winding leads need to be reversed(if 1ph.Interchange any two line leads if 3 ph) . This is best accomplished with a rotory drum switch(a double pole double throw could also be used.) Just remember , a single phase motor will not instantaneously reverse direction if running. It must stop and then it will reverse-3 phase will instataneous reverse. Caution,you could throw your chuck off if not careful.

 

[Bill Boehme]

Hopefully, there is a diagram or some printed information on the motor to tell you which way to hook the leads for CW and CCW rotation. A DPDT switch is required for this and it should be a snap action toggle rated for motor duty for at least the HP rating of the motor. The switch is used to reverse either the start or the run winding leads (but not both or you are back where you started). In addition to this, you will still need an ON-OFF switch to switch the power to the motor. And, as already mentioned, you need to stop the motor before reversing it, otherwise, when you flip the reverse switch, it will just continue to run in the same direction.

Bill

 

[underdog]

Thanks for the help guys...

Yes there is a diagram on the motor showing how to reverse it. That's what tipped us off that you could reverse it. So at least I know how it should be wired.

What I didn't know is what kind of switch to use. I will call Delta today to see if they have a switch that will do this...but I was also wondering if they could tell me what year this lathe is. I wonder if it would be cheaper to buy a switch locally?

Bill are you saying that I would need a regular ON/OFF switch in addition to a DPDT switch?

 

[n7bsn]

Thanks for the help guys...
.....

Bill are you saying that I would need a regular ON/OFF switch in addition to a DPDT switch?

I would, I would not use a DPDT center off. I would also make the DPDT switch hard to flip, what would happen if it was flipped "hot", would be, well, spectacular.

 

[Bill Boehme]

Actually, if it were flipped while the motor was running there would not be any spectacular results at all -- the motor would just keep on running just the same without as much as a hiccup.

Yes, you would want a regular ON-OFF switch upstream (i.e. towards the power source) of the reversing switch. And, it would definitely be a good idea to get a PULL ON - PULL OFF toggle switch. This is a type that has a mechanical locking feature that requires you to pull the toggle lever towards you to release the latch before it can be flipped. Another option is to use a guarded switch. I definitely would not contact Delta about a reversing switch. Insted try to find one at Newark, Allied, or Mouser Electronics. You might even be able to locate one at Grainger or McMaster-Carr. Places like Lowes and Home Depot have DPDT toggle switches, but for some reason that I can't figure out, all of theirs are center off -- I think that theirs are made mainly for 12V DC motors on things like winches where the center position is to stop the motor -- you don't want that on an AC motor.

Bill