Introduction
This user manual provides essential information for the safe and effective operation of the Digital Inverter Gas-shielded Welding Machine. It covers detailed instructions on installation, operation, maintenance, and troubleshooting for various models including MIG-120, MIG-130, MIG-160, MIG-200, and MIG-250. Please read this manual thoroughly before using the equipment.
Key Features
- Full-digital control system for precise arc length and stable wire feeding.
- Supports Gas shielded arc welding, MMA welding, and Self Shielded arc welding.
- IGBT technology for enhanced reliability.
- High duty cycle for extended welding operations.
- Closed loop feedback control with stable voltage output, accommodating network voltage fluctuations up to ±15%.
- Adjustable welding voltage and circuit for excellent welding characteristics.
- Efficient welding with stable current and excellent arc starting.
- Reduced volume and weight due to 35 KHz inverter frequency.
- Enhanced welding efficiency and energy saving.
- Low noise pollution due to switching frequency beyond audiorange.
Safety Precautions
Safety is paramount when operating welding equipment. This manual emphasizes critical safety instructions, including:
- Proper electrical connection and adherence to safety operation rules.
- Protection against electric shock by turning off power before wiring and avoiding contact with exposed conductive parts.
- Mitigation of welding fume hazards through ventilation and personal protective equipment.
- Prevention of fire and explosion risks by keeping combustibles away from the welding site and using appropriate protective clothing.
- Protection against arc light hazards by wearing eye and skin protection.
- Awareness of high-frequency arc ignition and potential electromagnetic interference.
- Caution regarding high-speed moving parts like fans.
- Safe handling of gas cylinders to prevent explosion.
- Personal protection measures, including wearing necessary protective clothing.
Installation and Operation
Detailed steps are provided for the installation and operation of the welding machine, including:
- Connection of input cables and ensuring proper grounding.
- Installation procedures for MMA welding, including correct connection of electrode holder and work piece.
- Installation and operation for gas shielded arc welding, including torch connection, gas hose connection, and parameter adjustment.
- Installation and operation for self-shielded arc welding.
- Guidance on single pulse gas welding for aluminum-magnesium and aluminum-silicon welding.
Maintenance and Troubleshooting
Regular maintenance is crucial for the longevity and performance of the welding machine. This section covers:
- Periodic checks of internal circuit connections, fan, and cables.
- Cleaning procedures using compressed air.
- Protection against water and vapor infiltration.
- Troubleshooting common malfunctions, such as overheating LED flashes, power LED issues, response problems with the torch switch, and unstable welding current.
Working Environment
Optimal working conditions are essential for safe and efficient operation:
- Maintain a dry environment with humidity not exceeding 90%.
- Operate within a temperature range of -10°C to 40°C.
- Avoid welding in open air without shelter from sunlight and rain.
- Prevent welding in dusty areas or environments with corrosive chemical gases.
- Avoid gas shielded arc welding in environments with strong airflow.
- Ensure good ventilation by keeping louvers uncovered and unblocked, with a minimum distance of 30cm from nearby objects.
