1. Introduction
The HZXVOGEN HVT250P is a versatile 5-in-1 multi-process inverter welding machine designed for professional and hobbyist use. It supports AC/DC TIG welding (including Pulse TIG) and MMA (Stick) welding, offering dual voltage compatibility (110V/220V). This manual provides essential information for safe and effective operation, setup, maintenance, and troubleshooting of your HVT250P welder.
2. Safety Information
Always prioritize safety when operating welding equipment. Failure to follow safety guidelines can result in serious injury or death. Read and understand all safety warnings before use.
- Electric Shock: Welding current can cause fatal electric shock. Ensure proper grounding, use dry gloves, and inspect cables for damage.
- Fumes and Gases: Welding produces fumes and gases that can be hazardous to your health. Work in a well-ventilated area or use a fume extractor.
- Arc Rays: Arc rays can burn eyes and skin. Always wear a welding helmet with appropriate shade, safety glasses, and protective clothing.
- Fire and Explosion: Welding sparks can cause fire or explosion. Keep flammable materials away from the welding area.
- Hot Parts: Welded parts and equipment can remain hot for a long time. Use insulated gloves and allow parts to cool before handling.
- Noise: High noise levels can damage hearing. Wear hearing protection.
3. Package Contents
Verify that all items listed below are included in your package:
- AC/CD TIG Welder (Main Unit)
- WP-17 TIG Torch
- TIG Torch Consumables (collets, collet bodies, nozzles)
- Ground Clamp
- Electrode Holder
- Argon Gas Hose
4. Product Overview
4.1. Front Panel Introduction
- Safety Indicator: Illuminates to indicate a safety warning or fault.
- Pedal Indicator: Shows if a foot pedal control is active.
- Parameter Adjust: Rotary knob to adjust welding parameters (e.g., current, frequency).
- Menu Adjust: Button to navigate through menu options and confirm selections.
- MMA/TIG Mode: Button to switch between MMA (Stick) and TIG welding modes.
- AC/DC Mode: Button to select Alternating Current (AC) or Direct Current (DC) for TIG welding.
- Pulse/Non-pulse Mode: Button to activate or deactivate pulse welding.
- 2T/4T Mode: Button to switch between 2-stroke (press and hold) and 4-stroke (press once to start, once to stop) trigger modes.
4.2. Rear Panel Introduction
- "-" Output Terminal: Negative welding output connection.
- Gas Terminal: Connection for inert shielding gas (e.g., Argon).
- Control Terminal: Connection for remote control devices like a foot pedal.
- "+" Output Terminal: Positive welding output connection.
- Power Cable: Main power input cable.
- Power Switch: Turns the welding machine ON/OFF.
- Cooling Fan: Provides essential cooling for internal components.
- Gas Inlet: Connection point for the gas supply hose.
5. Setup
Follow these steps to set up your HVT250P welding machine:
- Power Connection: Connect the power cable (5) to a suitable 110V or 220V power outlet. The machine automatically detects the voltage.
- Ground Clamp Connection: Connect the ground clamp to the "-" Output Terminal (1) for TIG welding or "+" Output Terminal (4) for MMA welding (check polarity requirements for your electrodes). Secure the ground clamp to the workpiece.
- TIG Torch/Electrode Holder Connection:
- For TIG welding: Connect the WP-17 TIG Torch to the appropriate output terminal (usually "+" for DC TIG, or as per specific setup for AC TIG) and the gas line from the torch to the Gas Terminal (2).
- For MMA welding: Connect the electrode holder to the appropriate output terminal (usually "+" for most electrodes, or "-" for specific types).
- Gas Connection (TIG only): Connect the Argon gas hose (6) from your gas cylinder regulator to the Gas Inlet (8) on the rear panel. Ensure all gas connections are tight to prevent leaks.
- Remote Control (Optional): If using a foot pedal or other remote control, connect it to the Control Terminal (3).
- Power On: Turn on the Power Switch (6) on the rear panel. The LED display will illuminate.
- Select Mode: Use the MMA/TIG Mode button (5) to select your desired welding process.
- Adjust Parameters: Use the Parameter Adjust knob (3) and Menu Adjust button (4) to set your welding parameters according to the material and thickness.
6. Operating Modes
The HVT250P supports multiple welding processes:
6.1. TIG Welding (AC/DC)
TIG (Tungsten Inert Gas) welding provides precise control and high-quality welds, especially for thin materials and exotic metals. The HVT250P offers both AC and DC TIG capabilities.
- DC TIG Welding: Ideal for stainless steel, carbon steel, copper, and titanium. Provides a stable arc and deep penetration.
Figure 7: A clean weld bead achieved with DC TIG welding. - AC TIG Welding: Essential for welding aluminum and magnesium alloys. The alternating current helps to break up the oxide layer on aluminum, ensuring a clean weld.
Figure 8: A clean weld bead achieved with AC TIG welding. - Pulse TIG Welding: Available in both AC and DC modes. Pulse welding helps to control heat input, reduce distortion, and improve weld appearance, especially on thin materials.
Figure 9: A clean weld bead achieved with Pulse TIG welding.
6.2. MMA (Stick) Welding
MMA (Manual Metal Arc) or Stick welding is a robust process suitable for outdoor use and welding thicker materials. It uses a consumable electrode coated in flux.
7. Welding Parameter Settings
Proper parameter settings are crucial for achieving quality welds. The HVT250P offers detailed control over various welding parameters.
The diagram above shows parameters such as Up Slope, Start Amps, Peak Amps, Peak On Time, Base Amps, Pulse Frequency, AC Frequency, AC Balance, Down Slope, and Finish Amps. Adjust these using the front panel controls to fine-tune your welding process.
7.1. Parameters for Aluminum TIG Welding
When welding aluminum, the waveform and specific parameters are critical. The HVT250P supports both Square Wave and Triangle Wave AC TIG for different aluminum thicknesses.
Refer to the table below for recommended starting parameters for aluminum and its TIG alloy. These are reference values and may need adjustment based on specific conditions and desired weld quality.
| Plate Thickness (mm) | Slope Shape | Welding Layers | Tungsten Radius (US) (mm) | Wire Radius (mm) | Preheat Temperature | Welding Current (A) | Gas Volume (L/min) | Nozzle Radius (mm) |
|---|---|---|---|---|---|---|---|---|
| 1.5 | I groove | 1/0 | 2 | 1.6-2.0 | - | 50-80 | 7-9 | 8 |
| 2 | I groove | 1/0 | 2-3 | 2-2.5 | - | 50-80 | 8-12 | 8-12 |
| 3 | I groove | 1/0 | 3 | 2-3 | - | 15-180 | 8-12 | 8 |
| 4 | I groove | 1-2/1 | 4 | 3 | - | 20-180 | 10-15 | 8-12 |
| 5 | I groove | 1-2/1 | 4 | 3-4 | - | 180-240 | 10-15 | 8-12 |
| 8 | Y groove | 2/1 | 5 | 4-5 | 100 | 260-320 | 16-20 | 10-12 |
| 10 | Y groove | 3-4/1-2 | 5 | 4-5 | 100-150 | 280-340 | 16-20 | 14-16 |
| 12 | Y groove | 3-4/1-2 | 5-6 | 4-5 | 150-200 | 300-360 | 18-22 | 14-16 |
| 16 | Y groove | 4-5/1-2 | 6 | 5-6 | 200-220 | 340-380 | 20-24 | 16-20 |
| 20 | Y groove | 4-5/1-2 | 6 | 5-6 | 200-260 | 360-400 | 25-30 | 20-22 |
| 16-20 | Double Y groove | 16-20 | 6 | 5-6 | 200-260 | 300-380 | 25-30 | 16-20 |
| 22-25 | Double Y groove | 22-25 | 6-7 | 5-6 | 200-260 | 360-400 | 30-35 | 20-22 |
8. Maintenance
Regular maintenance ensures the longevity and optimal performance of your welding machine.
- Cleaning: Regularly clean the machine's exterior and ventilation openings to prevent dust and debris buildup. Use compressed air to gently clear internal components if accessible and safe to do so.
- Cable Inspection: Periodically inspect all welding cables, torch, and ground clamp for cuts, fraying, or loose connections. Replace damaged components immediately.
- Gas System (TIG): Check gas hoses and connections for leaks. Ensure the gas regulator is functioning correctly.
- Consumables: Replace TIG torch consumables (tungsten electrodes, collets, collet bodies, nozzles) as they wear out to maintain arc stability and weld quality.
- Storage: Store the welder in a dry, clean environment when not in use.
9. Troubleshooting
This section addresses common issues you might encounter. For more complex problems, contact customer support.
- No Power: Check the power cable connection, power switch, and circuit breaker. Ensure the correct voltage (110V/220V) is supplied.
- No Arc/Weak Arc:
- Verify ground clamp connection to workpiece.
- Check welding current settings.
- Inspect welding cables and torch for damage.
- For TIG: Ensure gas flow, check tungsten electrode condition, and correct polarity.
- For MMA: Check electrode type and condition, and correct polarity.
- Poor Weld Quality:
- Review welding parameters (current, voltage, travel speed, gas flow).
- Ensure workpiece is clean and free of contaminants.
- For TIG: Check tungsten electrode grind, gas coverage, and torch angle.
- For MMA: Use appropriate electrodes for the material and ensure proper arc length.
- Overheating Indicator On: The machine has an internal thermal protection. Allow the welder to cool down. Ensure ventilation openings are clear and the cooling fan is operating.
10. Specifications
| Feature | Specification |
|---|---|
| Model Number | HVT250P AC/DC |
| Brand Name | HZXVOGEN |
| Origin | Mainland China |
| Plug Type | US Plug |
| Certification | CE |
| Voltage | 110V/220V (Dual Voltage) |
| Welding Processes | AC TIG, DC TIG, Pulse TIG, MMA (Stick) |
| Max Welding Current | 200A (AC TIG) |
| Technology | IGBT Inverter |
| Dimensions (L x W x H) | 45 cm x 15 cm x 33 cm (17.3 in x 6.2 in x 13.3 in) |
| Weight | 20.15 kg |
11. User Tips
No specific user tips or common questions were available from provided reviews or Q&A data. Always refer to the parameter tables and practice on scrap material to fine-tune your settings for optimal results.
12. Warranty and Support
For warranty information, technical support, or service inquiries, please contact HZXVOGEN customer service through their official channels. Keep your purchase receipt as proof of purchase.
