Cem Dual Mig 120 Manual [portable] Access
For gasless (flux-core) welding, the MIG gun should typically be connected to the negative terminal and the work clamp to the positive . For gas-shielded solid wire, this is usually reversed (Gun +, Clamp -).
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
Feed the wire manually through the inlet guide tube, over the grooved roller, and into the brass torch liner guide. Lower the pressure arm and lock it into place.
: Connect the gas regulator to the cylinder and attach the hose to the rear of the machine. Maintenance and Troubleshooting cem dual mig 120 manual
Disclaimer: This document is a synthesized summary. Always refer to the official CEM user manual provided with your specific welder for safety warnings, wiring diagrams, and warranty terms.
Check the torch nozzle frequently for spatter accumulation. Clean it out using MIG pliers and apply anti-spatter spray to prevent build-up.
When your welds don’t look right, consult this troubleshooting table derived from the . For gasless (flux-core) welding, the MIG gun should
Disclaimer: This article is for informational purposes. Always refer to the official CEM Dual MIG 120 manual provided with your specific machine for exact diagrams, electrical schematics, and safety warnings.
Install a spool of 0.8mm or 0.9mm Gasless Flux-Cored Wire (E71T-GS).
Slide the spool onto the holder so it unrolls from the bottom. Feed the wire through the guide and into the drive rolls, ensuring the groove on the roller matches your wire diameter (e.g., 0.8mm). For Gasless (Flux-Cored) , the torch is usually Negative (-)
Use the front-panel switches (often 2 or 4 settings) to adjust voltage based on material thickness. Wire Speed:
Weld only in well-ventilated areas. Use a local exhaust ventilation system or a respirator rated for welding fumes when working on galvanized steel, stainless steel, or coated metals.
Before striking an arc, familiarize yourself with the front and rear layouts of the unit. The beauty of the CEM Dual MIG 120 lies in its physical, tactile switches, which are less prone to digital failure.
Whether you have inherited one of these robust machines, purchased it secondhand, or dug it out of storage, having a comprehensive understanding of its operation is vital. Because original printed manuals for vintage CEM equipment can be difficult to locate, this comprehensive guide serves as your definitive manual, setup helper, and troubleshooting companion. Technical Specifications Overview
