1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your DONGCHENG DZG10 Corded Electric Demolition Hammer. Please read this manual thoroughly before using the tool to ensure proper handling and to prevent injury or damage.
The DONGCHENG DZG10 is designed for heavy-duty demolition tasks, including concrete crushing, chipping, digging, and cutting. It is suitable for various civil engineering applications such as pipe assembly, cable laying, machinery installation, water supply and drainage facilities, and interior decoration.
2. General Safety Instructions
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury when operating power tools.
- Work Area Safety: Keep the 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 working in dusty conditions. 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
The DONGCHENG DZG10 Demolition Hammer is a robust tool designed for demanding tasks. Familiarize yourself with its components before operation.

An image showing the DONGCHENG DZG10 Corded Electric Demolition Hammer. The tool is blue and black, featuring a robust handle, a powerful motor housing, and a pointed chisel bit inserted into the chuck. The brand name 'Dongcheng' is visible on the side.
Key Components:
- Main Handle: For primary grip and control.
- Auxiliary Handle: Provides additional stability and control during operation.
- Chisel/Bit Holder (Chuck): Securely holds the demolition bits.
- Power Switch: To turn the tool on and off.
- Variable Speed Control: Adjusts the impact rate for different materials and tasks.
- Power Cord: Connects the tool to the electrical supply.
4. Setup
Before operating the demolition hammer, ensure it is properly set up.
- Unpacking: Carefully remove the tool and all accessories from the packaging. Inspect for any damage that may have occurred during transit.
- Attaching the Auxiliary Handle: Securely attach the auxiliary handle to the tool. Adjust its position for comfortable and safe operation.
- Inserting the Chisel/Bit:
- Clean the shank of the chisel/bit.
- Insert the chisel/bit into the chuck until it locks into place. Pull on the bit to ensure it is securely seated.
- Ensure the correct type of chisel/bit is used for the specific demolition task.
- Power Connection: Ensure the power switch is in the 'OFF' position. Connect the power cord to a suitable 220V electrical outlet.
5. Operating Instructions
Follow these steps for safe and effective operation of your demolition hammer.
- Preparation: Ensure all safety gear is worn (eye protection, hearing protection, gloves, dust mask). Clear the work area of any obstructions.
- Grip: Hold the tool firmly with both hands, one on the main handle and one on the auxiliary handle.
- Starting the Tool: Press the power switch to turn the tool on.
- Adjusting Speed: Use the variable speed control to select the appropriate impact rate for the material being worked on. Lower speeds are suitable for delicate work, while higher speeds are for aggressive demolition.
- Demolition: Apply steady, firm pressure to the tool. Allow the hammer mechanism to do the work; do not lean heavily on the tool. Guide the chisel along the desired line of breakage.
- Stopping the Tool: Release the power switch to turn the tool off.
- Cool Down: For prolonged use, allow the tool to cool periodically to prevent overheating.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your DONGCHENG DZG10 Demolition Hammer.
- Cleaning: After each use, clean the tool thoroughly. Remove dust and debris from ventilation openings to prevent motor overheating. Use a soft, damp cloth; do not use harsh chemicals.
- Lubrication: Refer to the tool's specific lubrication points and schedule. Typically, the chuck mechanism may require periodic lubrication.
- Carbon Brushes: Inspect carbon brushes periodically. Worn brushes should be replaced by a qualified service technician to maintain motor efficiency.
- Cord Inspection: Regularly check the power cord for cuts, abrasions, or damage. Replace damaged cords immediately to prevent electrical hazards.
- Storage: Store the tool in a dry, secure place, out of reach of children.
7. Troubleshooting
This section addresses common issues you might encounter with your demolition hammer.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | No power supply; Damaged power cord; Faulty switch; Worn carbon brushes | Check power outlet and cord; Replace damaged cord; Have switch/brushes inspected by service center |
| Reduced impact force | Worn chisel/bit; Insufficient lubrication; Internal mechanism issue | Replace chisel/bit; Lubricate chuck; Contact service center |
| Excessive vibration/noise | Loose components; Worn bearings; Damaged internal parts | Tighten fasteners; Contact service center for inspection |
| Overheating | Blocked ventilation; Prolonged heavy use; Overload | Clean ventilation slots; Allow tool to cool; Reduce load |
If the problem persists after attempting these solutions, please contact an authorized service center.
8. Specifications
Detailed technical specifications for the DONGCHENG DZG10 Corded Electric Demolition Hammer.
- Brand: Dong Cheng
- Model Number: DZG10
- Power Source: Corded Electric
- Maximum Power: 1500 Watts
- Voltage: 220V
- Amperage: 14 Amps
- Drill Type: Hammer Drill (Demolition Hammer)
- Special Feature: Variable Speed
- Colour: Black
- Material: Plastic (housing)
- Item Weight: 10.4 Kilograms (10 kg 400 g)
- Product Dimensions: 59.5L x 15W x 40.5H Centimeters
- Included Components: Switch
9. Warranty and Support
For warranty information, service, or technical support, please refer to the warranty card included with your product or contact your authorized Dong Cheng dealer. Keep your purchase receipt as proof of purchase for warranty claims.