1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your WORX Angle Grinder Carbon Brushes. Carbon brushes are critical components in electric motors, facilitating the transfer of electrical current to the rotating armature. Regular inspection and timely replacement ensure optimal performance and longevity of your angle grinder.
2. Compatibility
These carbon brushes are designed for use with specific WORX angle grinder models. Please verify your tool's model number before installation to ensure proper fit and function.
Applicable WORX Angle Grinder Models:
- WU700
- WU703
- WU710
- WU712
- WU713
- WU714
- WU715
- WU716
- WU726
3. Installation (Replacement)
Replacing carbon brushes requires careful attention to safety and proper procedure. If you are unsure, consult a qualified technician.
- Safety First: Always disconnect the angle grinder from the power source before attempting any maintenance or replacement.
- Locate Brush Caps: Identify the brush caps on the side of the angle grinder motor housing. These are typically plastic or metal caps that can be unscrewed.
- Remove Old Brushes: Use a screwdriver or appropriate tool to unscrew the brush caps. Carefully pull out the old carbon brushes and their springs. Note their orientation.
- Clean Brush Holders: Inspect the brush holders for any carbon dust or debris. Clean them thoroughly to ensure the new brushes can move freely.
- Insert New Brushes: Insert the new carbon brushes into the holders, ensuring they are oriented correctly and the springs are properly seated behind them. The carbon block should slide smoothly into the holder.
- Secure Brush Caps: Screw the brush caps back into place, ensuring they are tightened securely but not overtightened.
- Test Operation: Reconnect the angle grinder to the power source and perform a brief test run. Listen for unusual noises and observe for excessive sparking. Allow the motor to run for a few minutes without load to help the new brushes seat properly.
4. Operating Principles
Carbon brushes are consumable parts that conduct electricity from the stationary part of the motor (stator) to the rotating part (armature). They are designed to wear down over time as they make contact with the commutator. Proper seating and consistent contact are essential for efficient motor operation and to prevent damage to the commutator.
5. Maintenance
To ensure the longevity and performance of your angle grinder, regular maintenance of the carbon brushes is recommended:
- Regular Inspection: Periodically inspect the carbon brushes for wear. The frequency depends on usage, but a general guideline is every 50-100 hours of operation.
- Replacement: Replace carbon brushes when they are worn down to approximately one-quarter of their original length, or if they show signs of chipping, cracking, or uneven wear. Always replace both brushes at the same time, even if only one appears significantly worn.
- Commutator Cleaning: While replacing brushes, it is good practice to gently clean the commutator with a soft, lint-free cloth to remove carbon dust. Avoid using abrasive materials.
6. Troubleshooting Common Issues
If your angle grinder exhibits any of the following symptoms, worn or faulty carbon brushes may be the cause:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Excessive sparking at the motor | Worn brushes, dirty commutator, incorrect brush seating | Inspect and replace brushes, clean commutator, ensure proper installation |
| Reduced power or intermittent operation | Worn brushes, poor electrical contact | Replace brushes |
| Motor stops working | Completely worn brushes, broken wire | Replace brushes, check wiring connections |
| Burning smell from motor | Overheating due to excessive sparking or motor overload | Replace brushes, reduce load, allow motor to cool |
7. Specifications
- DIY Supplies: Electrical
- Origin: Mainland China
- Package Dimensions (approx.): 15 cm (Length) x 10 cm (Width) x 5 cm (Height)
- Package Weight (approx.): 0.03 kg
8. User Tips
- Always ensure the new carbon brushes are identical in size and type to the original ones for optimal performance and safety.
- When installing, make sure the brushes slide freely within their holders. Any sticking can lead to poor contact and premature wear.
- After replacing brushes, it's recommended to run the tool at a low speed without load for a few minutes to allow the brushes to 'seat' or conform to the shape of the commutator, which helps establish good electrical contact.
9. Warranty and Support
For any questions regarding the installation, operation, or troubleshooting of your WORX Angle Grinder Carbon Brushes, please refer to your angle grinder's original manual or contact the manufacturer's customer support. Keep your purchase receipt for any warranty claims.
