NA-5 - Welding machine LINCOLN ELECTRIC - Free user manual and instructions
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| Product Type | Semi-automatic wire feeder for MIG/MAG welding |
| Brand | Lincoln Electric |
| Model | NA-5 |
| Input Voltage | 230/460 V, 3-phase, 60 Hz |
| Wire Diameter Range | 0.035 – 5/64 in (0.9 – 2.0 mm) |
| Welding Current Range | 50 – 400 A |
| Duty Cycle | 60% at 300 A |
| Wire Feed Speed | 50 – 600 in/min (1.3 – 15.2 m/min) |
| Dimensions (HxWxD) | 14 x 8 x 12 in (356 x 203 x 305 mm) |
| Weight | 21 lb (9.5 kg) |
| Polarity | DC reverse (electrode positive) or DC straight (electrode negative) |
| Welding Processes | MIG (GMAW) with solid wire, FCAW with cored wire |
| Control System | Analog voltage and wire feed speed control |
| Gas Solenoid | Built-in, 24 VAC coil |
| Drive Roll Type | Dual-groove, knurled or V-groove |
| Input Power Cable Length | 10 ft (3 m) |
| Welding Gun Connection | Lincoln K-126 or compatible (Euro connection) |
| Maintenance | Periodically clean drive rolls, replace worn liners and tips; check gas connections |
| Safety Features | Thermal overload protection, wire feed stop button |
| Spare Parts Availability | Common parts: drive rolls, gun consumables, control boards available from Lincoln Electric distributors |
| Operating Temperature Range | 14°F to 104°F (-10°C to 40°C) |
| Certifications | NEMA, CSA |
Frequently Asked Questions - NA-5 LINCOLN ELECTRIC
What welding processes can the Lincoln Electric NA-5 be used for?
The NA-5 is designed for MIG (GMAW) with solid wire and flux-cored arc welding (FCAW) with cored wire. It can handle mild steel, stainless steel, and aluminum with proper setup.
How do I set up the wire feeder for the correct wire size?
Select the appropriate drive roll groove (V-groove for solid wire, knurled for cored wire) and install the correct contact tip for the wire diameter. Adjust the wire feed speed control to match welding requirements.
What is the duty cycle of the NA-5?
The NA-5 has a 60% duty cycle at 300 A, meaning it can weld for 6 minutes out of a 10-minute cycle at that current. Higher currents reduce duty cycle.
How do I change polarity for different welding wires?
The NA-5 allows easy polarity change by swapping the welding cable connections at the machine. Typically, solid wire uses DC reverse (electrode positive), while self-shielded flux-cored wire uses DC straight (electrode negative).
Why is the wire not feeding properly?
Common causes: drive roll tension too low, liner blockage, or burred contact tip. Check and adjust drive roll pressure, clean or replace the liner, and replace the tip if needed.
What maintenance does the NA-5 require?
Regularly clean drive rolls and wire guide to prevent buildup. Inspect and replace worn liners, contact tips, and gas diffusers. Check gas connections for leaks.
Can I use a different brand welding gun with the NA-5?
The NA-5 is compatible with Lincoln K-126 style guns and also Euro connection guns via an adapter. Check your gun's connector type.
What safety precautions should I take when using the NA-5?
Always wear proper welding helmet with shade 10-14, welding gloves, and protective clothing. Ensure good ventilation and avoid flammable materials. Use the thermal overload protection as a backup.
How do I troubleshoot erratic arc or burnback?
Erratic arc may indicate low wire feed speed, incorrect voltage setting, or poor ground connection. Burnback is often due to slow wire feed or a sticking contact tip. Adjust settings and inspect tip.
Where can I find spare parts for the NA-5?
Spare parts are available through Lincoln Electric authorized distributors or online retailers. Common parts include drive rolls, control boards, and gun consumables. The manual includes part numbers.
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USER MANUAL NA-5 LINCOLN ELECTRIC
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Product information
Brand : LINCOLN ELECTRIC
Model : NA-5
Category : Welding machine