AmicoPower SF-160A Stick Arc DC Inverter Welder User Manual

1. Introduction

The AmicoPower SF-160A is a professional-grade rectifier utilizing advanced inverter technology for welding applications. This machine provides a strong, concentrated, and stable arc, ensuring quicker response during stick and workpiece short circuits. Its design allows for adjustable dynamic characteristics, enabling the arc to be softened or hardened based on specific welding requirements. This manual provides essential information for the safe and effective operation, setup, and maintenance of your SF-160A welding machine.

Figure 1: AmicoPower SF-160A Stick Arc DC Inverter Welder.

This image displays the AmicoPower SF-160A welding machine from a front-side angle, showcasing its red and black casing, control panel, and carrying strap.

2. Safety Information

Welding operations involve inherent risks. Adhering to safety precautions is crucial to prevent injury or damage.

• Electric Shock: Welding current can cause severe or fatal electric shock. Ensure proper grounding, inspect cables for damage, and wear dry gloves. 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 injure eyes and burn skin. Always wear a welding helmet with appropriate shade filter, safety glasses, and protective clothing.
• Fire and Explosion: Welding sparks and hot metal can cause fires or explosions. Keep flammable materials away from the welding area. Have a fire extinguisher readily available.
• Burns: Hot metal and sparks can cause burns. Wear protective clothing, including flame-resistant gloves, long sleeves, and pants.
• Noise: Some welding processes can generate high noise levels. Use hearing protection if necessary.
• Pacemakers: Individuals with pacemakers should consult their doctor before operating welding equipment.

3. Package Contents

Verify that all items listed below are present in your package:

• SF-160A Professional Stick Arc Welding Machine
• 8 feet Power Cord & N6-50P plug (pre-attached to the machine)
• 230V to 115V Power Adapter
• 300 Amp Electrode Holder with 10 feet Cable and 35-50 mm Connector
• 300 Amp Work Clamp with 10 feet Cable and 35-50 mm Connector
• 2 Pieces of 3/32 inch Electrodes
• 2 Pieces of 1/8 inch Electrodes
• Owner’s Manual (this document)

Figure 2: Electrode holder and sample electrodes.

This image shows the electrode holder with its cable and a selection of welding electrodes.

Figure 3: Work clamp with cable.

This image displays the work clamp, also known as the ground clamp, attached to its cable.

Figure 4: 230V to 115V Power Adapter.

This image shows the power adapter used to convert the N6-50P plug for 115V outlets.

4. Product Overview

4.1 Front Panel

Figure 5: Front Panel Controls and Connections.

This image provides a close-up view of the welder's front panel, highlighting the control knob, digital display, indicator lights, and output terminals.

• Power Indicator Light: Illuminates when the machine is powered on.
• O.C. (Over Current/Overheat) Indicator Light: Illuminates if the machine experiences overcurrent or overheating, indicating a temporary shutdown for protection.
• Digital Amperage Display: Shows the current welding amperage setting.
• Amperage Adjustment Knob: Used to set the desired welding current (15-160 Amp for 230V, 15-130 Amp for 115V).
• Negative Output Terminal (-): Connects to the work clamp cable.
• Positive Output Terminal (+): Connects to the electrode holder cable.

4.2 Rear Panel

Figure 6: Rear Panel Power Connection and Switch.

This image shows the rear of the welding machine, featuring the main power switch and the attached power cord.

• Power Switch: Turns the welding machine ON or OFF.
• Power Cord: Connects the machine to the main power supply.

5. Setup

5.1 Power Connection

1. Ensure the power switch on the rear panel is in the OFF position.
2. The SF-160A supports wide voltage input (AC 100-250V, 50-60Hz).
3. Connect the attached N6-50P power plug to a compatible 230V outlet. If using a 115V outlet, use the provided 230V to 115V power adapter.
4. Ensure the power source can provide sufficient amperage for the desired welding current.

5.2 Connecting Welding Cables

1. Connect the electrode holder cable to the Positive Output Terminal (+) on the front panel. Insert the connector and twist clockwise to secure.
2. Connect the work clamp cable to the Negative Output Terminal (-) on the front panel. Insert the connector and twist clockwise to secure.
3. Ensure all connections are tight and secure to prevent arcing and overheating at the terminals.

6. Operating Instructions

6.1 Stick (SMAW) Welding

1. Prepare Workpiece: Clean the workpiece surface of any rust, paint, or contaminants.
2. Attach Work Clamp: Securely attach the work clamp to the workpiece or a clean, bare metal work table. Ensure good electrical contact.
3. Insert Electrode: Insert the appropriate electrode into the electrode holder. The SF-160A supports electrodes from 1/16 to 3/16 inch (230V) or 1/16 to 5/32 inch (115V).
4. Power On: Turn the main power switch ON. The Power Indicator Light should illuminate.
5. Set Amperage: Adjust the Amperage Adjustment Knob to the recommended current for your chosen electrode and material thickness. The digital display will show the setting.
6. Begin Welding: Put on all personal protective equipment (welding helmet, gloves, protective clothing). Strike an arc by lightly scratching the electrode on the workpiece. Maintain a consistent arc length and travel speed.
7. Post-Weld: Turn off the machine after use. Allow the workpiece to cool before handling.

6.2 Lift-TIG Welding

The SF-160A features Lift-TIG welding capability. For Lift-TIG operation, additional equipment such as a TIG torch with a gas valve, a tungsten electrode, and a shielding gas cylinder (e.g., Argon) will be required (not included with this package).

1. Connect TIG Torch: Connect the TIG torch power cable to the Positive Output Terminal (+) and the work clamp to the Negative Output Terminal (-).
2. Gas Connection: Connect the shielding gas hose from the TIG torch to the gas regulator on your shielding gas cylinder.
3. Prepare Tungsten: Install a sharpened tungsten electrode into the TIG torch.
4. Power On and Set Amperage: Turn on the machine and set the desired amperage.
5. Initiate Arc (Lift-TIG): Gently touch the tungsten electrode to the workpiece and then lift it slightly (approximately 1/16 to 1/8 inch) to initiate the arc. The arc will start without high-frequency interference.
6. Weld: Maintain a consistent arc length and feed filler rod manually if required.
7. Post-Weld: Close the gas valve on the TIG torch and turn off the machine.

7. Maintenance

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

• Cleaning: Periodically clean the machine's exterior with a dry, soft cloth. Use compressed air to blow out dust and debris from the ventilation openings. Ensure the machine is unplugged before cleaning.
• Cable Inspection: Regularly inspect all welding cables, power cords, and connectors for cuts, abrasions, or loose connections. Replace damaged components immediately.
• Terminal Connections: Ensure output terminals are clean and free of corrosion. Tighten connections as needed.
• Storage: Store the welding machine in a clean, dry environment, away from excessive dust, moisture, and corrosive materials.

8. Troubleshooting

This section addresses common issues you might encounter. For problems not listed here, contact customer support.

9. Specifications

Technical specifications for the AmicoPower SF-160A welding machine:

10. Warranty and Support

For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official AmicoPower website. Keep your purchase receipt as proof of purchase for warranty claims.