ANDELI TIG-250 PRO AC DC Professional Aluminum Welding Machine

1. Introduction

The ANDELI TIG-250 PRO AC DC is a professional-grade inverter welding machine designed for versatile welding applications, including TIG (AC-TIG, DC-TIG, Cold-TIG), Pulse welding, and MMA (Stick) welding. Featuring an advanced LCD high-definition display and IGBT inverter technology, this machine offers precise control and stable power output for various materials, especially aluminum. Its intelligent design makes it suitable for both experienced welders and beginners.

Front view of the ANDELI TIG-250 PRO AC DC Welding Machine.

2. Safety Information

Always prioritize safety when operating welding equipment. Failure to follow safety precautions can result in serious injury or death.

• Eye and Face Protection: Always wear a welding helmet with appropriate shade lenses to protect against arc flash and sparks.
• Body Protection: Wear flame-resistant clothing, gloves, and safety shoes to protect against burns and electrical shock.
• Ventilation: Ensure adequate ventilation to remove welding fumes, which can be hazardous to your health.
• Electrical Safety: Never operate the welder in wet conditions. Ensure proper grounding and inspect cables for damage before use.
• Fire Prevention: Keep flammable materials away from the welding area. Have a fire extinguisher readily available.
• Gas Cylinders: Handle gas cylinders with care, secure them properly, and ensure connections are leak-free.

3. Setup

3.1. Unboxing and Package Contents

Carefully unpack the welding machine and all accessories. Verify that all components are present:

ANDELI TIG-250 PRO AC DC Welding Machine with included accessories.

• ANDELI TIG-250 PRO AC DC Welding Machine
• Ground Clamp (2M)
• WP-26 Welding Torch (4M)
• Gas Pipe (3M)
• Hose Clamp (x2)
• Collet (x10)
• Nozzle (x20)
• TIG Electrode (x10)

3.2. Physical Dimensions and Weight

The machine is designed to be compact and manageable.

Dimensions: 500mm (L) x 238mm (W) x 390mm (H). Net Weight: 12.5 KG.

• Dimensions (L x W x H): 500mm x 238mm x 390mm
• Net Weight: 12.5 kg
• Package Weight: 17.0 kg

3.3. Power Supply Connection

Connect the welding machine to a stable 220V AC power supply. Ensure the power outlet can handle the rated input current of the machine.

3.4. Welding Connections

1. Ground Clamp: Connect the ground clamp cable to the workpiece. Ensure a clean, secure connection for optimal performance and safety.
2. TIG Torch: Connect the WP-26 TIG torch to the appropriate port on the front panel.
3. Gas Pipe: Connect the gas pipe from your inert gas cylinder (e.g., Argon) to the gas inlet on the machine. Secure with hose clamps to prevent leaks.

4. Operating Instructions

4.1. LCD High-Definition Display

The machine features an intuitive LCD display for easy parameter adjustment and mode selection.

LCD display showing various function selections like Waveform, Pulse, 2T/4T, Pre/Post Gas, Balance, and Start/Stop Current.

4.2. Welding Modes

The TIG-250 PRO AC DC supports multiple welding modes:

Visual representation of various welding modes and their applications.

• AC-TIG: Ideal for welding aluminum and its alloys (0.5-5mm thickness).
• DC-TIG: Suitable for stainless steel, carbon steel, copper, and other non-ferrous metals (0.8-8mm thickness).
• Cold-TIG: For welding extremely thin sheets (0.3-1mm thickness) with minimal heat input, preventing discoloration and deformation.
• MMA (Stick Welding): For general purpose welding with coated electrodes. Supports 3.2mm welding rods for all-day welding.

4.3. AC Waveform Selection

For AC-TIG welding, you can select from three waveforms:

Choose between Trapezoidal, Square, and Sine wave for optimal AC-TIG welding.

• Trapezoidal Wave: More suitable for thin plates.
• Square Wave: Provides arc stability.
• Sine Wave: Offers low noise operation.

4.4. Pulse Function

The pulse function provides a better welding effect, especially for thin materials, by controlling heat input and improving weld bead leveling.

Pulse function helps in achieving a better, more leveled weld bead.

4.5. Balance Control

Adjusting the balance helps achieve a cleaner weld bead by controlling the cleaning action and penetration during AC welding.

Balance control ensures a cleaner weld bead.

4.6. Pre/Post Gas Flow

Pre-gas flow purges the welding area before the arc starts, and post-gas flow protects the cooling weld puddle and electrode from atmospheric contamination. This is crucial for preventing oxidation, especially when welding aluminum.

Pre/Post Gas prevents aluminum oxidation.

4.7. Start/Stop Current

Proper adjustment of start and stop current ensures full solder joints and prevents collapse.

Setting Start/Stop Current for full solder joints.

4.8. 2T/4T Selection

Choose between 2T (Two-Touch) and 4T (Four-Touch) modes based on your welding task:

2T for short welding, 4T for batch welding.

• 2T (Non-auto locking): Press the switch to weld, release to stop. Ideal for short welds.
• 4T (Auto locking): Press the switch to start and continue welding. Press again to stop. Suitable for longer, batch welding tasks.

4.9. Synergy Support

The TIG-250 PRO AC DC supports synergy settings, simplifying parameter adjustment and making it suitable for beginners.

4.10. Channel Storage

The machine offers 6 channels for storing your preferred welding parameters, allowing for quick recall of frequently used settings.

6 channels available for storing welding parameters.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your welding machine.

• Cleaning: Periodically clean the exterior of the machine and ensure ventilation openings are free from dust and debris. Use compressed air to gently clear internal components if accessible and safe to do so.
• Cable Inspection: Regularly inspect all welding cables, torch, and ground clamp for cuts, fraying, or loose connections. Replace damaged components immediately.
• Gas Connections: Check gas lines and fittings for leaks.
• Electrode and Nozzle: Replace worn-out TIG electrodes and nozzles as needed to maintain weld quality.

6. Troubleshooting

If you encounter issues with your welding machine, refer to the following common problems and solutions:

• Machine does not power on:
  • Check the power supply connection and ensure the main power switch is ON.
  • Verify that the circuit breaker has not tripped.
  • If the issue persists, contact customer support.
• Poor weld quality (e.g., porosity, uneven bead):
  • Ensure proper gas flow and check for gas leaks.
  • Verify that the correct welding parameters (current, pulse, balance, pre/post gas) are set for the material and thickness.
  • Check the condition of the TIG electrode and replace if contaminated or worn.
  • Clean the workpiece thoroughly before welding.
• Overheating: The machine has a complete cooling system. If it overheats, it may shut down automatically. Allow it to cool down before resuming operation. Ensure adequate airflow around the machine.

7. Specifications

Detailed technical specifications for the ANDELI TIG-250 PRO AC DC welding machine:

Technical specifications for TIG-250 PRO AC/DC.

8. User Tips

• Aluminum Welding: The AC-TIG mode is specifically designed for aluminum. Ensure proper cleaning of the aluminum surface and use the recommended parameters for optimal results.
• Thin Materials: For very thin materials, utilize the Cold-TIG mode to minimize heat input and prevent warping or discoloration.
• Cylinder Head Repair: This machine is suitable for filling cylinder heads, as confirmed by user inquiries.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.