Cem Dual Mig 120 Manual Direct

The manual for the CEM Dual MIG 120 provides technical specifications and operational instructions for this 220V continuous wire welding machine. CEM machines of this era are often associated with the Technical Specifications Power Supply: 220V / 230V single phase. Current Range: 60A – 120A. Wire Compatibility: 0.6 mm to 0.8 mm diameter. Dual Function:

Typically supports both gas (MIG/MAG) and gasless (Flux-cored) welding. Duty Cycle: cem dual mig 120 manual

Standard industrial units of this class often operate at a 30% duty cycle at peak amperage. Operating Instructions Weldcorp MIG Welder Operating Manual | PDF - Scribd The manual for the CEM Dual MIG 120

Usability & Setup

• Wire feed: Direct-drive feeder; smoothness depends on tension adjustment and wire spool size. Occasional birdnesting can occur if tension and liner are not set correctly.
• Gas vs Gasless: Some variants support gas MIG and flux-core (gasless) operation; manual typically explains switching the tip and using a regulator. Gas model requires correct shielding gas and regulator hookup—manual provides basic guidance.
• Polarity & Connections: Manual covers polarity for solid wire (DCEN/DCWP) and flux-cored; ground clamp and torch connections are standard.
• Portability: Lightweight and easy to move; suitable for small jobs on-site or at home.

Understanding the Control Panel

The CEM Dual MIG 120 manual dedicates two pages to the control panel. Here is a simplified breakdown: Understanding the Control Panel The CEM Dual MIG

• Voltage Knob (A – F or 1-6): Controls arc heat. Higher voltage = wider, flatter bead.
• Wire Speed Knob (Min – Max): Controls amperage. Higher speed = deeper penetration.
• Power Indicator Light: Illuminates when the machine is ON.
• Thermal Overload Light: If this red light is on, stop welding. Let the fan run until it turns off.
• Trigger Lock Switch: Locks the trigger for long, continuous welds. Push forward to engage.

Problem 2: The wire feeds but there is no gas (for gas MIG).

• Cause: Gas solenoid stuck or no pressure.
• Manual Solution: Check that the regulator shows 15-20 L/min. Listen for a “click” from the solenoid when pulling the trigger. If no click, the solenoid may be faulty (see repair section).

4.2 Voltage Connection

• 110V mode: Use 15A outlet. Max output limited to ~80A.
• 230V mode: Use 13A or 16A outlet. Achieves full 120A output.