Metabo KHE 2444 Multifunction Rotary Hammer Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective use, setup, operation, and maintenance of your Metabo KHE 2444 Multifunction Rotary Hammer. Please read these instructions carefully before operating the tool and keep them for future reference. Proper use and adherence to safety guidelines will ensure optimal performance and extend the lifespan of your tool.

2. General Safety Instructions

Always observe the following fundamental safety precautions when using power tools to reduce the risk of electric shock, fire, and serious injury.

• 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: Power tool plugs must match the outlet. Never modify the plug in any way. Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges, and refrigerators.
• Personal Safety: Always wear eye protection. Use hearing protection when operating the tool for extended periods. Wear a dust mask if operations create dust. Dress properly; avoid loose clothing or jewelry.
• 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 before making any adjustments, changing accessories, or storing power tools.
• Service: Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

3. Product Overview and Components

The Metabo KHE 2444 is a versatile multifunction rotary hammer designed for percussion drilling, non-percussion drilling, and chiseling. It features Vario (V) electronics for material-specific speeds and a Metabo S-automatic safety clutch for user protection.

Figure 1: Metabo KHE 2444 Multifunction Rotary Hammer. This image shows the main body of the tool, including the handle, chuck, and mode selector switch.

Included Components:

• SDS-plus Chuck for SDS-plus shank tools
• Auxiliary Handle
• Depth Stop
• Plastic Carrying Case

Key Features:

• Vario (V) Electronics: Allows for speed adjustment to match the material being worked on.
• Metabo S-automatic Safety Clutch: Disengages the drive automatically if the drill bit jams, enhancing user safety.
• Lockable Switch: For comfortable continuous operation.
• Mode Selector: Easily switch between percussion drilling, non-percussion drilling, and chiseling.

4. Setup

4.1 Attaching the Auxiliary Handle

1. Loosen the auxiliary handle by rotating it counter-clockwise.
2. Slide the handle over the clamping collar of the tool.
3. Position the handle to your desired working angle.
4. Tighten the handle by rotating it clockwise until secure.

4.2 Inserting SDS-plus Tools

1. Clean the shank of the SDS-plus drill bit or chisel.
2. Apply a thin layer of grease to the shank.
3. Push the tool into the SDS-plus chuck until it locks into place. Pull on the tool to ensure it is securely seated.
4. To remove, pull back the locking sleeve on the chuck and pull the tool out.

4.3 Setting the Depth Stop

1. Insert the depth stop rod into the hole on the auxiliary handle.
2. Adjust the depth stop to the desired drilling depth.
3. Tighten the auxiliary handle to secure the depth stop in position.

5. Operating Instructions

5.1 Selecting Operating Mode

Rotate the mode selector switch to choose the desired function:

• Hammer Drilling: For drilling in concrete, masonry, and stone.
• Drilling (without percussion): For drilling in wood, metal, and plastics.
• Chiseling: For light chiseling work, such as removing tiles or breaking small sections of concrete.

5.2 Powering On and Off

• To start the tool, press the trigger switch.
• To stop the tool, release the trigger switch.
• For continuous operation, press the trigger switch and then press the lock button. To release, press the trigger switch again.

5.3 Speed Control (Vario Electronics)

The Vario (V) electronics allow you to adjust the speed by varying the pressure on the trigger switch. Lighter pressure results in lower speed, while full pressure provides maximum speed. This feature is useful for starting holes precisely or working with different materials.

5.4 Working Examples

Figure 2: Overhead drilling with the Metabo KHE 2444. Ensure proper safety gear, including eye protection, hearing protection, and a dust mask, is worn during operation.

Figure 3: Chiseling a wall with the Metabo KHE 2444. Always maintain a firm grip on the tool and ensure stable footing.

6. Maintenance and Care

Regular maintenance ensures the longevity and safe operation of your Metabo KHE 2444.

• Cleaning: After each use, clean the tool, especially the ventilation slots, with a soft brush or compressed air. Do not use water or chemical cleaning agents.
• Chuck Maintenance: Keep the SDS-plus chuck clean and lightly greased to ensure smooth tool insertion and removal.
• Cable Inspection: Regularly inspect the power cable for damage. If damaged, have it replaced by a qualified electrician.
• Storage: Store the tool in its plastic carrying case in a dry, secure location, out of reach of children.

7. Troubleshooting

For issues not listed here or if solutions do not resolve the problem, please contact Metabo authorized service personnel.

8. Technical Specifications

9. Warranty and Support

Your Metabo KHE 2444 Multifunction Rotary Hammer comes with a 1-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

For warranty claims, technical support, or service inquiries, please contact your authorized Metabo dealer or visit the official Metabo website for contact information in your region. Please have your proof of purchase and the tool's model and serial number available when contacting support.

Note: Unauthorized repairs or modifications to the tool will void the warranty.