When welding with , use the push technique (forehand welding) to ensure optimal gas coverage over the weld puddle.
You likely exceeded the Duty Cycle . Let the fan run to cool the transformer; it will reset automatically. Routine Care
| Specification | Value | | --- | --- | | Input Voltage | 230V / 50Hz (Single phase) | | Rated Input Current | 16A (Requires a standard household plug, though 13A fuse may blow at max power) | | Welding Current Range | 30A – 120A | | Duty Cycle | 60% @ 80A, 20% @ 120A | | No-load Voltage | 34V DC | | Wire Diameter Capacity | 0.6mm, 0.8mm (Solid); 0.8mm, 0.9mm (Flux-cored) | | Protection Class | IP21S | cem dual mig 120 manual
Fixed ground lead with heavy-duty spring clamp. Rear Panel
| Symptom | Likely Cause | Solution | |---------|--------------|----------| | Wire feeds but no arc | Earth clamp not connected / poor contact | Clean clamp contact point | | Erratic arc, popping | Wrong polarity for wire type | Swap torch/earth cables | | Thermal light on | Duty cycle exceeded | Wait 10 min for fan to cool | | Bird’s nest (wire tangles) | Spool brake too tight or loose | Adjust nut tension | | Porosity in weld | No gas flow (or wind) | Check cylinder valve, regulator | When welding with , use the push technique
Ensure they are clean and free of metal filings. Conclusion The CEM Dual MIG 120
Why? Flux-cored wire requires less heat in the base metal and more penetration; reversing polarity reduces spatter. Routine Care | Specification | Value | |
If you need help tracking down a digital copy of a specific schematic or require specific part dimensions for replacement drive rollers, please let me know. To help further, tell me:
Before you even plug in your welder, make safety your top priority. A MIG welder generates intense heat, bright light (including harmful UV), and potentially toxic fumes. Here are the most critical safety rules distilled from general welding practices:
Clean the ground clamp location; attach directly to bare metal. Worn out torch liner. Pull out and replace the internal torch liner sleeve. Thermal overload triggered.