Hi Bob
Didn't spend a lot of time making this pretty or really explaining it figured I'd start with sound and video. You will hear two different welding sounds one is the regular weld mode the other is a pulse mode.
In looking at the manual for my unit which is different company I was looking at the wiring diagram it has about 6 or so different taps on the transformer for 220, 440, single phase three phase 50cycles 60cycles. Manual is also in I think seven languages. But one of the points it does make is that you must be sure to connect the power leads to the correct taps. Mine came from the company with the 220 cord and plug no problem. I assume that yours came from the dealer with the correct cord and plug as well. I wonder though if they connected the cord to the correct taps if yous is likewise made for the world market.
Video is at
http://www.canadianmilitarypattern.com/CMP%20Videos.htm bottom of the page.
Cheers Phil