Cem Dual Mig 120 Manual Repack Jun 2026

Change out contact tips as soon as the inner hole becomes oblong, as worn tips cause arc instability.

Torch must be Positive (+) , Earth/Ground Clamp must be Negative (-) . Wire: Solid steel wire (0.6mm or 0.8mm ER70S-6).

While no official spec sheet is available, user experiences and discussions indicate its likely capabilities: cem dual mig 120 manual

Connect the Earth Clamp to the terminal (DCEN - Direct Current Electrode Negative). No gas shielding cylinder is required. Loading the Wire Spool and Feeding Isolate the machine from the mains electrical supply.

Take a clear photo of the wiring schematic usually glued to the inside of the side panel. If yours is missing, that’s the first thing to ask for on hobbyist forums! Change out contact tips as soon as the

Fan-cooled (internal transformer thermal protection) Deciphering the Control Panel

Torch must be Negative (-) , Earth/Ground Clamp must be Positive (+) . Note: Check inside the wire spool compartment for the terminal blocks or flying leads to swap these connections. Wire: Flux-cored wire (0.8mm E71T-GS). While no official spec sheet is available, user

To reverse polarity: Open side panel, swap the two heavy cables (torch and earth) according to labels inside.

To keep your vintage or legacy CEM welder running for decades, observe the following maintenance checklist: