Cem Dual Mig 120 Manual |work|

Check for a worn or clogged contact tip. Replace it if it looks ovalized or contains spatter.

Always read the specific safety manual that came with your unit for detailed electrical and safety requirements. Pro-Tip: Finding the Manual

If the machine stops and a yellow/orange light comes on, you’ve exceeded the Duty Cycle . Leave the fan running and wait 10 minutes for it to reset. 4. Consumables and Maintenance

The CEM Dual Mig 120 is a compact, versatile welder known for:

Increase voltage switch setting or turn down the wire speed. If using gasless wire, swap polarity to Torch Negative (-). Thermal overload protection has activated. cem dual mig 120 manual

This setup is ideal for outdoor welding where wind would blow away shielding gas, or for quick, portable repairs.

Are you setting up the machine for or gasless (flux-cored) welding?

Note: On these older units, this usually involves swapping two heavy-gauge cables inside the wire feed compartment near the drive motor. 3. The Control Panel Basics Most 120-amp CEM units feature a simplified interface:

Like any tool, this welder will last longer with regular care: Check for a worn or clogged contact tip

Maintain a distance of 1/4" to 1/2" between the contact tip and the metal workpiece. An excessive stick-out weakens electrical current and destabilizes the arc. 7. Maintenance and Care

Slide the wire spool onto the spindle, ensuring it feeds from the bottom.

Ensure the gas cylinder is open and the regulator is set to 10-15 CFH. Check for leaks in the hose.

E71T-GS or E71T-11 Flux-Cored wire (0.8mm or 0.9mm). Pro-Tip: Finding the Manual If the machine stops

The "Dual" in the Dual Mig 120 name highlights its capability to run two different configurations: traditional MIG with shielding gas, or Flux-Cored Arc Welding (FCAW) without gas. To switch between them, you must configure the machine's internal polarity. Standard MIG Configuration (With Gas)

The manual is not just a booklet of warnings; it is a wiring schematic, a parts list, and a tuning guide. It explains the specific synergy between wire speed (feed rate) and voltage (arc force) for solid wire and flux-cored wire.

Welding equipment can be dangerous. Always wear a proper auto-darkening welding helmet, heavy-duty leather gloves, and a fire-resistant jacket. Never weld in damp or wet conditions, and ensure your work area is free of flammable materials.