Wiring miller maxtron 450 for single phase???

[desertmoron]

I have a miller maxtron 450 cc/cv that i used in a shop that was wired for 3 phase. the front panel says it can be used as single phase, but when i pulled the side panel off, there are 3 large wires and a ground - i'm not sure how to wire it up for single phase and don't want to mess anything up. the were no wiring diagrams inside (only a pic showing how to set it for 240 or 480 volts). any suggestions??

thanks much,
Barry

[Paul Seaman]

Wire L1 and L2 to the two verticle prongs of the plug. The 3phase will be the center lug opposite the ground. On my machine the 3 phase is the red wire{dynasty-may be different than yours}

Hope this helps,

[HAWK]

DESERTMOON,

STOP!!!

YOUR MAXTRON IS NOT BUILT LIKE PJ'S DYNASTY! YOU CAN CHANGE THE INPUT VOLTAGE AND PHASE BY CHANGING THE LOCATION OF THE JUMPER LINKS INSIDE THE MACHINE.

DOWNLOAD YOUR OWNERS MANUAL . BE SURE TO INCLUDE YOUR SERIAL NUMBER.. THEN TAKE A LOOK AT THE ELECTRICAL SERVICE GUIDE IN THE MANUAL. IF IT STILL DOES NOT MAKE SENSE, CALL 1-800-4 A MILLER AND ASK TO BE TRANSFERRED TO TECH SERVICE FOR THE MAXTRON 450 WELDERS. THE GUYS THERE CAN HELP YOU RE-WIRE IT OVER THE PHONE.

[Paul Seaman]

Thanks Hawk I missed the jumpers part of the setup, I hope no harm has been done.

Peace,

[HAWK]

PJ,

I was not trying to steal your thunder. Not all the 1/3 phase units are equipped with Miller's "Auto-Line" technology. You are lucky to have such a wonderful machine as the Dynasty. You, I and others are "spoiled"-in a good way I suppose.

If you get a chance to use the Maxtron, do it! It has a sweet arc-just different! You have to change the jumpers to get where you are going. I had a couple of Thermal Arc plasma machines wired that way. It's not too bad pulling the cover as long as you are not switching a lot.