S-LONG Cordless Angle Grinder User Manual

1. Introduction

Thank you for choosing the S-LONG Cordless Angle Grinder. This powerful and versatile tool is designed for various cutting and grinding applications, offering portability and efficiency with its 20V 4.0AH Lithium-Ion battery and brushless motor. This manual provides essential information for the safe and effective use, maintenance, and troubleshooting of your angle grinder. Please read all instructions carefully before operation.

2. Important Safety Instructions

Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Keep this manual for future reference.

General Power Tool Safety

• Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
• Electrical Safety: Avoid body contact with earthed or grounded surfaces (e.g., pipes, radiators, ranges, refrigerators).
• Personal Safety: Always wear appropriate personal protective equipment, including eye protection (safety glasses or goggles), hearing protection, and gloves. Dress properly; avoid loose clothing or jewelry that can get caught in moving parts.
• Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.

Angle Grinder Specific Safety

• Guard Use: Always use the protective guard provided with the tool. Ensure it is securely attached and positioned to provide maximum safety.
• Accessory Selection: Only use accessories that are specifically designed for your angle grinder and rated for the tool's maximum RPM.
• Workpiece Securing: Always secure the workpiece firmly. Do not hold small workpieces by hand.
• Proper Grip: Maintain a firm grip on the tool with both hands. The 2-position auxiliary handle should always be used for better control.
• Kickback Prevention: Be aware of potential kickback. Avoid binding the disc or applying excessive pressure.
• Sparks and Debris: Be aware that sparks and metal chips will be generated during operation. Ensure no flammable materials are nearby.

3. Product Components and Identification

Familiarize yourself with the parts of your S-LONG Cordless Angle Grinder:

Image Description: An S-LONG Cordless Angle Grinder is shown with various components labeled, including the Side Handle, Spindle Lock Button, Start Switch, Speed Switch Button, Battery Release Button, Battery, and Wheel Guard. This image helps users identify each part of the tool.

• Angle Grinder Body: The main unit housing the motor and gear assembly.
• 4.0AH Lithium-Ion Battery: Provides cordless power to the grinder.
• Fast Charger: Used to recharge the battery.
• Cutting Wheels/Flap Discs: Abrasive accessories for cutting and grinding.
• Side Handle: Provides an additional grip point for control and comfort. This model features a 2-position auxiliary handle for versatility.
• Wheel Guard: A protective cover designed to shield the user from sparks and debris.
• Spindle Lock Button: Engages the spindle to allow for easy disc changes.
• Start Switch: Activates the grinder.
• Battery Release Button: Used to detach the battery from the tool.
• Wrench: Tool for securing and removing discs.

4. Setup

4.1 Battery Charging

Before first use, fully charge the 4.0AH Lithium-Ion battery. Connect the fast charger to a standard power outlet and insert the battery pack. The charger's indicator light will show the charging status. Once fully charged, remove the battery from the charger.

Image Description: The S-LONG Cordless Angle Grinder is displayed alongside its 4.0Ah Lithium-Ion battery and charger, highlighting the cordless design and power components.

4.2 Attaching the Wheel Guard

The protective wheel guard must always be installed before operating the grinder. Position the guard over the spindle housing and secure it firmly. Ensure it is oriented to deflect sparks and debris away from you.

4.3 Installing/Changing Discs

Follow these steps to install or change cutting/grinding discs:

1. Ensure the battery is removed from the tool.
2. Place the inner flange onto the spindle, ensuring it fits the spindle flat.
3. Place the desired cutting or grinding disc over the spindle.
4. Depress and hold the spindle lock button on the gear box.
5. Screw the outer flange onto the spindle. Use the provided wrench to tighten it securely.

Image Description: A four-step visual guide demonstrating how to easily install and remove a grinding disc on the angle grinder, showing the lock nut, grinding disc, backing flange, wheel guard, and spindle.

4.4 Attaching the Side Handle

Screw the side handle into one of the two available positions on the grinder head. Choose the position that offers the best control and comfort for your specific application.

Image Description: The S-LONG Angle Grinder is shown highlighting its 2-position non-slip rubber handle, emphasizing comfort and control during use.

5. Operating Instructions

5.1 Basic Operation

1. Ensure the battery is fully charged and securely inserted into the tool.
2. Hold the grinder firmly with both hands, using the main grip and the side handle.
3. Press the start switch to activate the grinder. Allow the disc to reach full speed (up to 9000 RPM) before contacting the workpiece.
4. Apply light, even pressure. Do not force the tool. Let the disc do the work.
5. To stop the grinder, release the start switch.

5.2 Applications

The S-LONG Cordless Angle Grinder is suitable for a variety of tasks:

• Metal Cutting: Use appropriate cutting discs for steel, aluminum, and other metals.
• Metal Grinding: Use grinding discs to smooth welds, remove rust, or shape metal.
• Cutting Rebar: Capable of cutting through rebar with the correct cutting disc.
• Plastic Cutting: Can be used for cutting various plastic materials.

Image Description: A collage of four images demonstrating the S-LONG Angle Grinder in various applications: metal cutting, metal grinding, cutting rebar, and plastic cutting, showcasing its versatility.

5.3 Brushless Motor Technology

This angle grinder features a powerful brushless motor, which provides several benefits:

• High Efficiency: Converts more energy into power, resulting in longer runtime.
• Longer Motor Life: No carbon brushes to wear out, reducing maintenance and extending the tool's lifespan.
• Reduced Heat: Operates cooler, contributing to durability.

Image Description: An illustration of the S-LONG Angle Grinder highlighting its powerful brushless motor, with icons indicating high efficiency, longer runtime, and extended motor life.

6. Maintenance

Regular maintenance ensures the longevity and safe operation of your angle grinder.

• Cleaning: After each use, clean the tool with a dry cloth to remove dust and debris. Do not use solvents or abrasive cleaners. Ensure ventilation openings are clear for proper heat dissipation.
• Disc Inspection: Regularly inspect cutting and grinding discs for wear, cracks, or damage. Replace worn or damaged discs immediately.
• Guard Inspection: Check the wheel guard for any damage or looseness. Ensure it is always securely attached.
• Battery Care: Store batteries in a cool, dry place. Do not expose them to extreme temperatures. Charge batteries fully before storing for extended periods.
• General Inspection: Periodically check all screws and fasteners for tightness.

7. Troubleshooting

If you encounter issues with your S-LONG Cordless Angle Grinder, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact S-LONG customer support.

8. Specifications

9. Warranty and Support

For information regarding the product warranty, please refer to the documentation included with your purchase or visit the official S-LONG website. For technical support, replacement parts, or any other inquiries, please contact S-LONG customer service through the contact information provided on their official channels.