ANDELI TIG-250MPC
ANDELI TIG-250MPC 200Amp Pulse TIG/MMA/CLEAN/HOT TIG Welder Instruction Manual
Comprehensive guide for safe and effective operation of your ANDELI TIG-250MPC welding machine.
1. Introduction
Thank you for choosing the ANDELI TIG-250MPC 200Amp Pulse TIG/MMA/CLEAN/HOT TIG Welder. This machine is designed for versatile welding applications, offering TIG, Pulse TIG, MMA (Stick), and CLEAN functions. Featuring IGBT inverter technology, it provides efficient and reliable performance for both 110V and 220V power sources. This manual provides essential information for the safe and correct operation, setup, and maintenance of your welding machine.

Figure 1.1: The ANDELI TIG-250MPC welding machine with included accessories such as the TIG torch, ground clamp, electrode holder, and various consumables.
2. Safety Information
Welding operations involve significant risks. Always prioritize safety to prevent injury or damage. This machine is CE certified, indicating compliance with European safety standards. Adhere to all local and national safety regulations.
2.1 General Safety Precautions
- Electric Shock: Welding current can cause fatal electric shock. Ensure proper grounding and insulation. Never touch live electrical parts.
- Fumes and Gases: Welding produces fumes and gases that can be hazardous to health. Work in a well-ventilated area or use local exhaust ventilation.
- Arc Rays: Arc rays can burn eyes and skin. Always wear a welding helmet with appropriate shade lenses and protective clothing.
- Fire and Explosion: Welding sparks and hot materials can cause fires. Keep flammable materials away from the welding area. Have fire extinguishing equipment readily available.
- Burns: Hot metal and slag can cause severe burns. Wear protective gloves and clothing.
- Noise: High noise levels can damage hearing. Use hearing protection if necessary.
2.2 Personal Protective Equipment (PPE)
Always wear the following PPE during welding operations:
- Welding helmet with appropriate filter lens.
- Flame-resistant clothing (long sleeves and pants).
- Welding gloves.
- Safety shoes.
- Respiratory protection if ventilation is inadequate.
3. Product Overview and Features
The ANDELI TIG-250MPC is a multi-functional welding machine designed for precision and efficiency. It incorporates advanced IGBT inverter technology for stable arc performance and high power conversion efficiency.
3.1 Key Features
- Multiple Welding Functions: TIG, Pulse TIG, MMA (Stick), CLEAN, and HOT TIG.
- Dual Voltage Capability: Operates on both 110V and 220V power supplies.
- IGBT Inverter Technology: Enhances duty cycle and power efficiency (exceeding 85%).
- High Definition LED Screen: Provides clear display of welding parameters for easy adjustment.
- Compact and Lightweight Design: Reduces weight by up to 25% for portability.
- Silent Fan Design: Maintains a quiet working environment.

Figure 3.1: Front panel of the TIG-250MPC, highlighting its various welding modes.

Figure 3.2: The high-definition LED screen provides clear parameter display for user convenience.
4. Included Components
Upon unpacking, verify that all components are present and undamaged. The standard package for the TIG-250MPC includes:
- ANDELI TIG-250MPC Welding Machine
- WP-17 TIG Torch
- Electrode Holder (for MMA welding)
- Ground Clamp
- Consumables (Nozzles, Collets, Tungsten Electrodes)
- Gas Hose (Trachea)

Figure 4.1: Overview of the TIG-250MPC welding machine and its standard accessories.

Figure 4.2: Detailed view of the TIG torch components for assembly and maintenance.
5. Setup Instructions
5.1 Power Connection
The TIG-250MPC supports dual voltage input (110V/220V). Ensure the correct power cord and plug are used for your local power supply. Connect the machine to a properly grounded electrical outlet.

Figure 5.1: The welder's dual voltage capability allows operation on both 110V for small tasks and 220V for industrial applications.
5.2 Gas Connection (for TIG Welding)
For TIG welding, connect a shielding gas cylinder (typically Argon) to the gas inlet on the rear of the machine using the provided gas hose. Ensure all connections are secure and leak-free. Adjust the gas flow rate according to the welding parameters and material thickness.
5.3 Torch and Ground Clamp Connection
- Connect the TIG torch to the appropriate connector on the front panel.
- Connect the ground clamp cable to the negative (-) terminal. Attach the ground clamp securely to the workpiece, ensuring good electrical contact.
- For MMA (Stick) welding, connect the electrode holder to the positive (+) terminal and the ground clamp to the negative (-) terminal.
6. Operating Instructions
The TIG-250MPC offers various welding modes. Select the appropriate mode and adjust parameters using the control panel and LED screen.

Figure 6.1: The control panel is designed for easy adjustment of welding parameters.
6.1 TIG Welding Mode
TIG welding provides stable and uniform solder joints, resulting in clean and aesthetically pleasing welds.
- Select TIG mode on the control panel.
- Adjust welding current (Amps) based on material type and thickness.
- Ensure proper gas flow.
- Initiate arc using Lift TIG or high-frequency start (if available).

Figure 6.2: A sample TIG weld demonstrating stable and uniform solder joints.
6.2 Pulse TIG Welding Mode
Pulse TIG mode is ideal for welding thin materials or when heat input needs to be precisely controlled. It produces stable and uniform solder joints with reduced distortion.
- Select Pulse TIG mode.
- Adjust peak current, background current, pulse frequency, and pulse width as required.
- Proceed with welding as in standard TIG mode.

Figure 6.3: A sample Pulse TIG weld, also exhibiting stable and uniform solder joints.
6.3 MMA (Stick) Welding Mode
MMA mode is suitable for welding thicker materials and in outdoor conditions. The TIG-250MPC offers easy arc start and minimizes electrode sticking.
- Connect the electrode holder and ground clamp as described in Section 5.3.
- Select MMA mode.
- Adjust welding current based on electrode type and diameter.
- Strike the arc and maintain a consistent arc length.

Figure 6.4: A sample MMA (Stick) weld, demonstrating the machine's capability for this process.
6.4 CLEAN Function
The CLEAN function is designed to clean the surface of the weld bead, restoring its original shiny appearance. This function can be activated with a single click on the control panel.
Note: The cleaning solution (HCl with a concentration of 0.175-0.035%) is not included and must be purchased locally due to transportation restrictions.
6.5 Suitable Materials for Welding
The TIG-250MPC is capable of welding various materials, including:
- Stainless Steel
- Galvanized Pipe
- Square Tube
- Iron

Figure 6.5: Examples of materials that can be welded with the TIG-250MPC.

Figure 6.6: Visual representation of welding effects achieved with TIG, Pulse TIG, and Spot Welding modes.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your welding machine. Always disconnect the power supply before performing any maintenance.
- Cleaning: Periodically clean the machine's exterior and ventilation openings to prevent dust and debris buildup. Use compressed air to clear internal components if necessary, ensuring the machine is completely powered off and cooled.
- Cable Inspection: Regularly inspect all welding cables, torch, and ground clamp for damage, cuts, or loose connections. Replace damaged components immediately.
- Consumables: Check and replace TIG torch consumables (nozzles, collets, tungsten electrodes) as they wear out to maintain weld quality.
- Gas System: Verify that gas hoses are free from kinks or leaks.
8. Troubleshooting
This section addresses common issues you might encounter. For problems not listed here, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the machine | Power cord disconnected, circuit breaker tripped, faulty power switch. | Check power cord connection, reset circuit breaker, ensure power switch is ON. |
| No welding arc | Poor ground connection, incorrect welding parameters, faulty torch/electrode holder. | Ensure ground clamp is secure, adjust current settings, inspect torch/electrode holder for damage. |
| Poor weld quality | Incorrect parameters, contaminated material, improper gas flow (TIG), worn consumables. | Adjust settings, clean workpiece, check gas flow, replace worn consumables. |
| Overheating protection activated | Exceeded duty cycle, blocked ventilation. | Allow machine to cool down, ensure ventilation openings are clear. |
9. Specifications
Detailed technical specifications for the ANDELI TIG-250MPC welding machine.

Figure 9.1: Product parameters and dimensions of the TIG-250MPC.
| Parameter | Value (110V) | Value (220V) |
|---|---|---|
| Model | TIG-250MPC | |
| Input Voltage (U1) | 110V | 220V |
| Rated Input Current (I1max) | 43A | 27A |
| Output Current Range (I2) | 20A-160A (TIG), 20A-130A (MMA) | 20A-200A (TIG), 20A-160A (MMA) |
| Rated Output Voltage (U2) | 16.4V (TIG), 25.2V (MMA) | 18V (TIG), 26.4V (MMA) |
| No-Load Voltage (U0) | 56 ± 5V | |
| Duty Cycle (40°C) | 40% @ 160A (TIG), 40% @ 130A (MMA) | 40% @ 200A (TIG), 40% @ 160A (MMA) |
| Protection Grade | IP21 | |
| Insulation Grade | F | |
| Cooling Method | Air-cool | |
| Item Weight | 21.4 pounds (approx. 9.7 kg) | |
| Package Dimensions | 18.5 x 14.5 x 11 inches (approx. 47 x 37 x 28 cm) | |
10. Warranty and Support
ANDELI provides a two-year warranty for the TIG-250MPC welding machine, including free replacement parts. For any issues or guidance, please contact the efficient customer service team. Refer to your purchase documentation for specific warranty terms and contact information.
For further assistance, visit the official ANDELI store: ANDELI Store on Amazon.
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