CONENTOOL 26MM Demolition Hammer Electric Jack Hammer User Manual

1. Introduction

The CONENTOOL NBT-RH-26A is a powerful 26MM Demolition Hammer designed for heavy-duty tasks such as drilling in concrete, masonry, wood, and metal, as well as chiseling and demolition work. Featuring a 1400W motor and a 26mm chuck, this tool is engineered for efficiency and durability in various construction and renovation scenarios. Its dual-gear intelligent switching allows for versatile operation, adapting to different material requirements.

2. Safety Instructions

Always follow basic safety precautions when using electric power tools to reduce the risk of fire, electric shock, and personal injury. Read all instructions before operating this tool.

• Work Area Safety: Keep your work area clean and well-lit. 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. Do not expose power tools to rain or wet conditions. Never abuse the cord; keep it away from heat, oil, sharp edges, or moving parts.
• Personal Safety: Always wear eye protection, hearing protection, and appropriate dust masks. Dress properly; avoid loose clothing or jewelry. Secure long hair.
• 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.
• Vibration: This tool features upgraded double-layer vibration technology to reduce vibration to the arm. However, prolonged use can still cause vibration-related injuries. Take regular breaks and use anti-vibration gloves.

3. Package Contents

Upon opening the package, verify that all items listed below are present and undamaged:

• 1 X Electric Hammer (CONENTOOL NBT-RH-26A)
• 1 X Plastic Carrying Box
• 1 X Auxiliary Handle
• 1 X Pointed Chisel (Picks)
• 1 X Flat Chisel (Hammers)
• 4 X Drill Bits (various sizes: 6, 8, 10, 12mm x 150mm)
• 1 X Pair of Industrial Gloves
• 1 X Dust Guard
• 2 X Carbon Brush (spare set)
• 3 X Drill Chuck (includes quick-fit adapter and standard drill chuck)
• 1 X User Manual (this document)

4. Specifications

Technical specifications for the CONENTOOL NBT-RH-26A Demolition Hammer:

5. Setup

Before operating the hammer drill, ensure it is properly set up and all accessories are securely attached.

5.1 Attaching the Auxiliary Handle

1. Loosen the auxiliary handle clamp by rotating it counter-clockwise.
2. Slide the auxiliary handle onto the front of the hammer drill body.
3. Adjust the handle to a comfortable and secure position for your grip. The handle is 360° rotatable for optimal control.
4. Tighten the clamp by rotating it clockwise until the handle is firmly secured and does not move.

5.2 Mounting Drill Bits and Chisels

The CONENTOOL NBT-RH-26A uses an SDS-Plus chuck system for quick and secure bit changes. For standard drill bits, use the provided drill chuck adapter.

1. For SDS-Plus Bits (Drill Bits/Chisels):
   • Pull back the chuck collar.
   • Insert the SDS-Plus bit into the chuck until it clicks into place.
   • Release the chuck collar. Pull on the bit to ensure it is securely locked. There will be a slight play, which is normal for SDS-Plus systems.
2. For Standard Drill Bits (using Drill Chuck Adapter):
   • First, mount the quick-fit adapter into the SDS-Plus chuck as described above.
   • Then, attach the standard drill chuck to the quick-fit adapter.
   • Insert the desired standard drill bit into the standard drill chuck.
   • Tighten the drill chuck using the chuck key (if applicable) or by hand until the bit is firmly secured.

6. Operating Instructions

The CONENTOOL NBT-RH-26A offers three primary operating modes: Hammer Drilling, Chiseling, and Drilling. Select the appropriate mode for your task using the mode selector switch.

6.1 Mode Selection

The mode selector switch is located on the top of the tool. Rotate the switch to align with the desired icon:

• Hammer Drilling: For drilling in concrete, brick, and masonry with impact action.
• Chiseling: For breaking and chiseling in concrete and masonry. The bit will rotate freely to allow for repositioning.
• Drilling: For drilling in wood, metal, and plastic without impact action.

6.2 General Operation

1. Ensure the correct bit/chisel is installed and the mode is selected.
2. Plug the tool into a suitable AC power outlet (220V 50/60Hz).
3. Hold the tool firmly with both hands, using the main handle and the auxiliary handle.
4. Position the bit/chisel on the workpiece.
5. Press the trigger switch to start the tool. The speed is variable depending on trigger pressure.
6. Apply steady, firm pressure. Do not force the tool; let the hammer action do the work.
7. When finished, release the trigger switch and wait for the tool to come to a complete stop before setting it down.

7. Maintenance

Regular maintenance ensures the longevity and optimal performance of your CONENTOOL Demolition Hammer.

• Cleaning: After each use, clean the tool with a dry cloth. Remove any dust or debris from the air vents to prevent overheating. Do not use water or chemical cleaners.
• Chuck Maintenance: Keep the chuck clean and lightly lubricated to ensure smooth bit changes.
• Carbon Brush Replacement: The tool comes with spare carbon brushes. If the tool's power decreases significantly or sparks are visible, the carbon brushes may need replacement. Consult a qualified technician or refer to specific instructions for carbon brush replacement.
• Storage: Store the tool in its plastic carrying box in a dry, secure place, out of reach of children.

8. Troubleshooting

If you encounter issues with your CONENTOOL Demolition Hammer, refer to the following common problems and solutions:

• Tool does not start:
  • Check if the power cord is securely plugged into a working outlet.
  • Inspect the power cord for any damage.
  • Ensure the trigger switch is fully depressed.
  • Check the carbon brushes; they might be worn out and need replacement.
• Reduced power or excessive sparking:
  • This often indicates worn carbon brushes. Replace them with the provided spare set or new ones.
  • Ensure the power supply voltage matches the tool's requirements.
• Bit not locking into chuck:
  • Ensure the SDS-Plus bit shank is clean and free of debris.
  • Pull back the chuck collar fully before inserting the bit.
  • Verify you are using the correct type of bit for the chuck (SDS-Plus or standard with adapter).
• Excessive vibration:
  • While the tool has vibration reduction, excessive vibration might indicate a bent or damaged bit. Replace the bit.
  • Ensure the auxiliary handle is securely tightened.

For issues not covered here, please contact customer support.

9. User Tips

• Pre-Drilling: For very hard materials or precise holes, consider starting with a smaller drill bit before moving to the desired larger size.
• Cooling: Allow the tool to cool down during prolonged use, especially during heavy demolition tasks, to prevent overheating and extend motor life.
• Dust Management: Always use the provided dust guard, especially when working overhead or in enclosed spaces, to minimize dust exposure.
• Bit Selection: Always use sharp, appropriate drill bits and chisels for the material you are working on. Dull bits can strain the tool and reduce efficiency.

10. Warranty and Support

CONENTOOL products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official CONENTOOL website. Keep your purchase receipt as proof of purchase for any warranty claims.