1. Introduction
This manual provides essential information for the safe and efficient operation and maintenance of your JASIC ZX7 series manual arc welding machine. Please read this manual thoroughly before operating the equipment to ensure proper usage and to prevent injury or damage.
Video: 360-degree view of the JASIC ZX7-400D welding machine.
2. Safety Information
Welding operations can be hazardous. Always follow safety precautions to prevent electric shock, burns, fire, and other injuries. Keep this manual accessible for future reference.
- Always wear appropriate personal protective equipment (PPE), including welding helmet, gloves, and protective clothing.
- Ensure proper ventilation to avoid inhaling welding fumes.
- Do not operate the machine in damp or wet conditions.
- Ensure the workpiece is properly grounded.
- Keep children and unauthorized personnel away from the welding area.
- Disconnect power before performing any maintenance or adjustments.
3. Product Overview
The JASIC ZX7 series are portable inverter DC manual arc welding machines designed for light industrial use. They feature advanced technology for stable performance and ease of use.
Key Features:
- Full network connection, arbitrary wiring (single-phase 220/380V, three-phase 380V).
- Ultra-wide network voltage adaptation range (140V-510V).
- Manual welding with unified adjustment, selecting electrode diameter, and self-matching welding parameters.
- High no-load voltage, strong output capability.
- Long line adaptive thrust, thrust current not affected by cable length and diameter.
- Compatible with most generators on the market.
- Intelligent fan for energy-saving and noise reduction, reduces dust entry, extends fan life.
- Beautiful molding, less splashing during welding.
Image: JASIC ZX7-400D highlighting features like manual welding, network voltage indication, unified manual welding, and intelligent fan.
Image: JASIC ZX7-250D highlighting features like manual welding, unified manual welding, and network voltage indication.
Image: JASIC ZX7-315D emphasizing network voltage adaptive and current self-matching capabilities. Notes that ZX7-250D extends welding handle wire by 50 meters for 3.2 welding rods, and ZX7-315D extends 50 meters for 4.0 welding rods.
4. Specifications
The following tables detail the technical specifications for the JASIC ZX7 series welding machines.
ZX7-250D and ZX7-315D Parameters:
Image: Detailed parameter table for ZX7-250D and ZX7-315D models.
| Category | Parameter | ZX7-250D (Z25II) | ZX7-315D (Z26II) | ||||
|---|---|---|---|---|---|---|---|
| Single phase AC220 ± 15% | Single phase AC380 ± 15% | Three phase AC380 ± 15% | Single phase AC220 ± 15% | Single phase AC380 ± 15% | Three phase AC380 ± 15% | ||
| Input | Input voltage (V) | AC220 ± 15% | AC380 ± 15% | AC380 ± 15% | AC220 ± 15% | AC380 ± 15% | AC380 ± 15% |
| Rated input capacity (kVA) | 8 | 8.8 | 11.5 | 7.9 | 11.3 | 9.3 | |
| Power factor | 0.77 | 0.7 | 0.85 | 0.77 | 0.7 | 0.85 | |
| Rated no-load voltage (V) | 65 | 59 | 65 | 60 | 60 | 60 | |
| Welding current/voltage range | 20-160 A | 20-200 A | 20-200 A | 20-180 A | 20-230 A | 20-230 A | |
| Output | Welding current (A) | 20-160 | 20-200 | 20-200 | 20-180 | 20-230 | 20-230 |
| Thrust current (A) | 0-100 | 0-100 | 0-100 | 0-100 | 0-100 | 0-100 | |
| Thermal arc current (A) | 0-100 | 0-100 | 0-100 | 0-100 | 0-100 | 0-100 | |
| Other | Rated load duration rate @ 40°C | 20% | 25% | ||||
| Efficiency | 85% | 85% | |||||
| Protection grade | IP21 | IP21 | |||||
| Insulation level | H | H | |||||
| Dimensions (mm) | 465*140*292 | 465*140*292 | |||||
| Weight (kg) | 6.2 | 6.5 | |||||
ZX7-400D Parameters:
Image: Detailed parameter table for the ZX7-400D model.
| Category | Parameter | Single phase AC220 ± 15% | Single phase AC380 ± 15% | Three phase AC380 ± 15% |
|---|---|---|---|---|
| Input | Input voltage (V) | AC220 ± 15% | AC380 ± 15% | AC380 ± 15% |
| Rated input capacity (kVA) | 8 | 8.8 | 11.5 | |
| Power factor | 0.77 | 0.7 | 0.85 | |
| Rated no-load voltage (V) | 75 | 65 | 65 | |
| Welding current/voltage range | 40-190 A | 40-190 A | 40-270 A | |
| Output | Welding current (A) | 40-190 | 40-190 | 40-270 |
| Thrust current (A) | 0-60 | 0-60 | 0-60 | |
| Thermal arc current (A) | 0-60 | 0-60 | 0-60 | |
| Other | Rated load duration rate @ 40°C | 30% | ||
| Efficiency | 85% | |||
| Protection grade | IP21 | |||
| Insulation level | H | |||
| Dimensions (mm) | 660*260*490 | |||
| Weight (kg) | 13.1 | |||
Note: Standard accessories include 2 quick plugs and 1 Allen wrench for all models.
5. Setup
5.1 Unpacking and Inspection
- Carefully remove the welding machine and all accessories from the packaging.
- Inspect the machine for any signs of damage during transit. If damage is found, contact your supplier immediately.
- Verify that all standard accessories (2 quick plugs, 1 Allen wrench) are present.
5.2 Power Connection
The ZX7 series supports single-phase AC220V, single-phase AC380V, and three-phase AC380V input voltages. Ensure the power supply matches the machine's requirements and is properly grounded.
- Connect the power cable to the appropriate power source.
- Ensure the circuit breaker on the rear panel is in the OFF position before connecting to power.
- The machine features an ultra-wide network voltage adaptation range (140V-510V), making it adaptable to various power conditions.
Image: Rear view of the ZX7-400D model, illustrating the power input terminal and cooling fans. Note the circuit breaker for power control.
5.3 Welding Cable Connection
- Connect the electrode holder cable to the positive (+) quick plug terminal on the front panel.
- Connect the workpiece clamp cable (ground cable) to the negative (-) quick plug terminal on the front panel.
- Ensure all connections are secure to prevent arcing and overheating.
Image: Front view of the ZX7-250D model, showing the quick plug terminals for welding cables and the control panel.
6. Operating Instructions
6.1 Powering On
- After all connections are made, switch the circuit breaker on the rear panel to the ON position.
- The digital display on the front panel will illuminate, indicating the machine is ready for operation.
6.2 Setting Welding Parameters
- Use the control knob on the front panel to adjust the welding current (Amperage) according to the electrode diameter and material thickness.
- The machine features unified adjustment and self-matching welding parameters, simplifying the setup process.
- Refer to the electrode manufacturer's recommendations for optimal current settings.
6.3 Electrode Selection
The ZX7 series is designed for Manual Metal Arc (MMA) welding. Select an electrode appropriate for your material and application.
- ZX7-250D can stably weld 3.2 welding rods with a 50-meter welding handle wire extension.
- ZX7-315D can stably weld 4.0 welding rods with a 50-meter welding handle wire extension.
- ZX7-400D can stably weld 5.0 welding rods with a 100-meter welding handle wire extension.
6.4 Welding Process
- Secure the workpiece with the ground clamp.
- Insert the chosen electrode into the electrode holder.
- Strike an arc by lightly touching and quickly lifting the electrode from the workpiece.
- Maintain a consistent arc length and travel speed for a quality weld.
- The machine's "long line adaptive thrust" ensures consistent thrust current regardless of cable length, improving weld quality.
Image: A welder demonstrating manual arc welding with the machine.
Image: Close-up of a welding process, illustrating the "beautiful molding and less splashing" characteristic of the machine.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your welding machine.
7.1 Daily Maintenance
- Clean the exterior of the machine with a dry cloth.
- Inspect welding cables and connections for wear or damage. Replace if necessary.
- Check the electrode holder and ground clamp for good contact and cleanliness.
7.2 Periodic Maintenance
- Periodically clean the cooling fans and ventilation openings to ensure proper airflow. The intelligent fan system helps reduce dust entry, but occasional cleaning is still recommended.
- Check internal connections for tightness (only to be performed by qualified personnel).
- Inspect the power cord for any damage.
Caution: Always disconnect the machine from the power supply before performing any maintenance.
8. Troubleshooting
This section provides solutions to common issues you might encounter. For problems not listed here or if issues persist, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not power on | No power supply; Circuit breaker off; Faulty power cable. | Check power outlet; Turn on circuit breaker; Inspect/replace power cable. |
| No arc or weak arc | Incorrect current setting; Poor ground connection; Wet or faulty electrode; Loose welding cable connections. | Adjust current; Ensure good ground contact; Use dry electrode; Tighten connections. |
| Overheating indicator on | Exceeded duty cycle; Blocked ventilation; High ambient temperature. | Allow machine to cool down; Clean ventilation openings; Operate in cooler environment. |
9. User Tips
- For optimal performance, match the electrode diameter to the material thickness and adjust the welding current accordingly.
- Take advantage of the machine's "long line adaptive thrust" feature when using extended welding cables to maintain consistent arc performance.
- Regularly check the digital display for current settings and any error indicators.
10. Warranty and Support
The JASIC ZX7 series welding machines come with a 1-year warranty. For any questions, technical support, or warranty claims, please contact your supplier or the manufacturer directly.
Manufacturer: Shenzhen Jialianda Welding Equipment Co., Ltd.
Contact: WhatsApp +86 15197868198
Certifications: ISO14001, ISO45001, ISO9001
Image: Certificate of Registration for ISO14001 Environmental Management Systems.
Image: Certificate of Registration for ISO45001 Occupational Health and Safety Management Systems.
Image: Certificate of Registration for ISO9001 Quality Management Systems.