Cem Dual Mig 120 Manual _hot_ May 2026

Generally around 10% at 105A–120A, increasing significantly at lower settings. Wire Compatibility: Handles 0.6mm to 0.8mm wire.

This potentiometer controls how fast the motor pushes the wire. This must be tuned by ear—you’re looking for a consistent "sizzling bacon" sound.

These are consumables. If the wire is "stuttering," replace the copper tip at the end of the torch. cem dual mig 120 manual

For Gas (Solid Wire) , the torch is usually Positive (+). For Gasless (Flux-Cored) , the torch is usually Negative (-). Check the internal terminals near the wire feed motor to switch these. 4. Maintenance Tips

Flip the tensioner arm, thread the wire through the guide liner, over the roller, and into the torch lead. This must be tuned by ear—you’re looking for

Keep the gas shroud clean of spatter to ensure even gas flow.

Tighten the pressure roller just enough so the wire feeds smoothly. If you block the wire at the torch tip with your gloved hand, the rollers should slip slightly rather than bird-nesting at the drive motor. For Gas (Solid Wire) , the torch is usually Positive (+)

If the wire won't feed even with high tension, your torch liner might be kinked or clogged with dust. 5. Troubleshooting Common Issues

As the name suggests, it is "Dual" because it can often be configured for Gas (MIG) or Gasless (Flux-Cored) welding by reversing the polarity. 2. Control Panel Breakdown

This usually means your shielding gas is off, empty, or there’s a breeze blowing the gas away. If using gasless wire, it means the metal is too dirty.