Re: Look at the control box for clues....
It says polyphase on the controls if you look carefully at it. Consequently, the
controls may be for a 3 phase motor. If this is so, then you will have to replace
all the controls with a double pole double throw drum switch or similar to have
forward and reverse on the Leeson. Is that the motor for that lathe?
Also the 3 wires on the bottom right of the control box look clipped off and would
be indicative of a 3 phase setup. Also notice the terminals say T1, T2, &T3 which
leads me to believe it is a 3 phase setup.
Hi Cathead,
sorry, i disagree as far as control replacement- there are a million ways to skin a cat (no pun intended)
the existing contactors are 3 phase contactors- on that i do agree
I can't say it never existed- but, I haven't ever seen a 3 phase dual voltage motor that will operate on single phase 110v.
this Leeson is a single phase- dual voltage motor
the only difference between 3 phase contactors and single phase contactors is the addition of a 3rd pole for the 3 phase contactor.
there is no other difference!!!!
If you look at the incoming power wiring, there are 2 conductors and a ground- indicative of single phase supply.
there is no magic, dependent on how the contactor is wired, will switch one pole or all 3 at the same time.
a 3 phase contactor can be safely used on single phase circuits, provided it's rated for the intended work.
conversely, in most instances single phase contactors shouldn't be used in 3 phase circuits because it will only break 2 poles.
no other difference.
for 110 volt operation, i use 110volt/20amp rated components whenever possible, for longevity.
there is a few ways the lathe could be wired up.
it will not be necessary to ditch the existent control system, quite the contrary...
all of the components, less the contactors or contactor coils, can be utilized to provide directional control.
were not really dealing with rocket science, just a low voltage single phase change over.
surprisingly, it will wire up just like it's wired for single phase 220v with the exception of the motor tap wiring.
if the contactor coils are replaced or replace the contactors themselves, this will be a slam dunk!!!