1. Introduction
The 2UUL DA85 CVT GRINDER PRO is a high-precision electric grinding pen designed for intricate tasks in phone repair and other electronics. Featuring a coreless motor, unibody aluminum alloy construction, and low noise operation, it offers precise control for polishing pads and other delicate grinding applications. This manual provides essential information for the safe and effective use of your device.
2. Safety Information
- Always wear appropriate personal protective equipment, such as safety glasses, when operating the grinding pen.
- Ensure the device is turned off before changing grinding bits or performing any maintenance.
- Keep the device away from water or other liquids to prevent electric shock.
- Do not operate the device near flammable materials or gases.
- Store the device in a dry, safe place out of reach of children.
- Use only approved grinding bits and accessories with this device.
- Avoid applying excessive pressure during operation, as this can damage the device or the workpiece.
3. Package Contents
Verify that all items are present in your package:
- 2UUL DA85 CVT GRINDER PRO Electric Grinding Pen
- Grinding Bits (various sizes: 2.5A*2, 2.0D*2, 1.5K*2, 0.8A*2, 4.0K*2)
- USB Type-C Charging Cable (not explicitly listed but implied by Type-C port)
4. Product Overview
The 2UUL DA85 CVT GRINDER PRO features a sleek unibody aluminum alloy design, providing durability and a comfortable grip. It is equipped with a digital display for battery level and speed, and intuitive controls for operation.
Key Components:
- Power Switch: Long press to turn on/off, short press to pause.
- Speed Adjustment: Controls the rotation speed of the grinding bit.
- Type-C Port: For charging the device.
- Rotation Change (F/R): Allows switching between forward and reverse rotation.
- Battery Display: Shows the current battery level.
- Speed Display: Indicates the current rotation speed.
- Bit Chuck: Mechanism for inserting and securing grinding bits.
5. Setup
5.1 Charging the Device
- Connect the provided USB Type-C cable to the Type-C port on the grinding pen.
- Connect the other end of the cable to a compatible USB power adapter (DC5V/1A recommended).
- The battery display will indicate charging status. Charge fully before first use.
5.2 Installing/Removing Grinding Bits
- Ensure the grinding pen is turned OFF.
- To loosen the chuck, turn the front part of the pen to the left until you hear a "Click" sound.
- Insert the desired grinding bit into the chuck. Ensure it is fully seated.
- Turn the front part of the pen to the right to tighten the chuck and secure the bit.
- To remove a bit, turn left until it loosens, then "Pull Out" the bit.
6. Operating Instructions
6.1 Power On/Off and Pause
- Power On/Off: Long press the power switch button.
- Pause: Short press the power switch button during operation to pause. Short press again to resume.
6.2 Adjusting Speed
- Use the speed adjustment controls (refer to Figure 2) to increase or decrease the rotation speed.
- The current speed will be displayed on the screen. The device supports a rotating speed range of 0-35000RPM.
6.3 Changing Rotation Direction
- Press the 'Change Rotation' button (F/R) to switch between forward and reverse rotation as needed for your task.
6.4 General Usage
- Select the appropriate grinding bit for your task (e.g., precision pads polishing).
- Hold the pen firmly and apply gentle, consistent pressure to the workpiece.
- Start with a lower speed and gradually increase if necessary.
- For precision work, use the low-speed setting for better control.
7. Maintenance
- Cleaning: After each use, gently wipe the device with a soft, dry cloth to remove any dust or debris. Ensure no particles enter the motor or chuck mechanism.
- Bit Storage: Store grinding bits in a protective case to prevent damage and dulling.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in use for extended periods.
- Avoid Lubricants: Do not apply oil or lubricants to the chuck or motor unless specifically instructed by the manufacturer.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Low battery; Faulty power switch | Charge the device; Long press the power switch firmly; Contact support if issue persists. |
| Grinding bit is loose or falls out | Chuck not tightened properly; Worn chuck mechanism | Ensure chuck is tightened securely (turn right until firm); Inspect chuck for damage, replace if necessary. |
| Reduced grinding performance | Dull or incorrect grinding bit; Low speed setting | Replace the grinding bit; Ensure the correct bit is used for the material; Increase speed setting. |
| Unusual noise or vibration | Loose bit; Damaged bit; Internal issue | Check bit installation; Replace bit; Discontinue use and contact support. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | DA85 |
| Product Name | CVT GRINDER PRO - CVT PRO |
| Application | Phone Repairing Tool Set, Phone Repair |
| Material | Stainless Steel, Aluminum Alloy |
| Voltage | AV 110V-240V 50-60HZ |
| Input | DC5V/1A |
| Power | 30W |
| Rotating Speed | 0-35000RPM |
| Gross Weight | 244g |
| Package Size | 198*72*48mm |
| Department | Unisex-adult |
| Pattern | Monochrome |
10. User Tips
- The device is noted for its high quality, quiet operation, and nice finish. Users appreciate its robust build, though some find it a bit heavy.
- For optimal results, ensure the grinding bit is securely fastened before operation.
- Experiment with different speed settings to find the most effective one for your specific task and material.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official product website or contact the seller directly. Keep your purchase receipt as proof of purchase.