Miller CP-302 question

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Any one know if this is a machine where you can not only select voltages (3 phase) but also has a 1 phase or 3 phase switchable link in it?There is one at work that the control contactor failed in, they are going to scrap it.
Reply:I found the Manual on the Miller web site, no luck!May try to get it anyways.
Reply:the 302 does not have a contactor. only two ice cube relays and three scrs.One relay is controlled by the feeder. the relay tells the SCR firing pcb to turn on the SCRs full. The relays have a bad habit of breaking a small wire inside where it connects to the swing arm. easy fix.And yes three phase transformer welder only.