1. Introduction
Thank you for choosing the Robustrue Digital Electric Torque Wrench. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before use and keep it for future reference.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the tool:
- Wear appropriate personal protective equipment (PPE), such as safety glasses.
- Ensure the workpiece is stable and secure before applying torque.
- Do not exceed the maximum torque capacity of the wrench.
- Keep the tool clean and dry.
- Do not use the wrench if it is damaged or malfunctioning.
- Keep out of reach of children.
3. Setup
3.1 Unpacking and Inspection
Carefully remove the torque wrench and its accessories from the packaging. Inspect all components for any signs of damage. If any damage is found, do not use the tool and contact customer support.
3.2 Battery Installation
The wrench is powered by batteries (included). Locate the battery compartment, insert the batteries according to the polarity markings, and secure the cover. The display will illuminate upon successful installation.
3.3 Power On/Off
Press the power button to turn the wrench on. The display will show the current settings. The wrench features an automatic standby mode after five minutes of inactivity, followed by an automatic power-off to conserve battery life.
3.4 Unit Selection
The wrench supports five measurement units: Nm, ft-lb, in-lb, Kgf-m, and Kgf-cm. Use the 'U' button on the control panel to cycle through and select your desired unit of measurement.
3.5 Presetting Torque Values
In Preset mode, you can set a target torque value. Use the arrow buttons to adjust the value. The wrench will alert you as you approach and reach this target.
4. Operating Instructions
4.1 Torque Range
This digital torque wrench offers a wide torque range from 12.5 ft-lbs to 250.8 ft-lbs (17-340 N.m), suitable for various applications from bicycle components to automotive tasks.
4.2 Operating Modes
The wrench features three upgraded operating modes:
- Preset Mode (PRESET): Set a target torque value. The wrench will provide alerts as you approach and reach the target. Up to 10 data sets can be stored.
- Real-time Mode (TRACK): Track the applied torque value in real-time on the display. This mode is useful for monitoring torque application without a specific target.
- Peak Mode (PEAK): Records the maximum torque applied during an operation. This mode saves up to 500 sets of test data, allowing for later review.
4.3 Target Torque Alert System
To prevent over-tightening, the wrench incorporates a dual alarm mechanism:
- Auditory Alert: A regular beep sounds as you approach the preset torque.
- Visual Alert: LED lights flash (green, then yellow, then red) as you approach and reach the target torque.
- Haptic Alert: The wrench vibrates continuously when the target torque is reached.
4.4 72-tooth Ratchet Head
The 72-tooth reversible ratchet head allows for efficient operation in tight spaces with just a 5° swing. It can measure torque in both clockwise and counter-clockwise directions.
4.5 Multifunctional Use
This tool can be used as a manual wrench when the digital display is turned off. It is suitable for a wide range of applications, including tightening or loosening screws on bicycles, motorcycles, engine components, and tires.
5. Maintenance
5.1 Cleaning and Storage
After each use, wipe the wrench clean with a soft, dry cloth. Do not use abrasive cleaners or solvents. Store the wrench in its protective carrying case in a dry, cool place, away from direct sunlight and extreme temperatures.
5.2 Battery Replacement
When the battery indicator on the display shows low power, replace the batteries promptly to ensure accurate readings and proper functionality. Refer to section 3.2 for battery installation instructions.
5.3 Calibration
For optimal accuracy, it is recommended to verify the calibration of your torque wrench after 12 months of use or 5000 tightening cycles, whichever comes first. Contact a certified calibration service for professional calibration.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display not turning on | Low or dead batteries; Incorrect battery installation; Auto-off activated | Replace batteries; Reinstall batteries correctly; Press power button to turn on |
| Inaccurate torque readings | Wrench needs calibration; Incorrect unit selected; Damaged sensor | Perform calibration; Verify unit setting; Contact customer support |
| Alarm not functioning | Volume too low; Malfunction | Check settings for alarm volume; Contact customer support |
| Wrench feels loose or damaged | Physical damage; Wear and tear | Discontinue use immediately; Contact customer support |
7. Specifications
| Feature | Specification |
|---|---|
| Model | TH340 |
| Torque Range | 12.5 - 250.8 ft-lbs (17 - 340 N.m) |
| Accuracy | ±2% |
| Drive Size | 1/2 inch |
| Measurement Units | Nm, ft-lb, in-lb, Kgf-m, Kgf-cm |
| Ratchet Head | 72-tooth, 5° swing |
| Operating Modes | Preset, Real-time, Peak |
| Data Storage (Preset Mode) | Up to 10 data sets |
| Data Storage (Peak Mode) | Up to 500 test data sets |
| Alarm Mechanism | Buzzer, LED Flash, Vibration |
| Power Source | Battery |
| Auto-off | After 5 minutes of inactivity |
| Certification | CE |
| Package Dimensions (L x W x H) | 68 cm x 11 cm x 6 cm |
| Package Weight | 2.46 kg |
8. Warranty and Support
Robustrue 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 Robustrue website. Keep your purchase receipt as proof of purchase.
9. User Tips
- Always ensure the correct unit of measurement (Nm, ft-lb, etc.) is selected before starting any task to avoid errors.
- Utilize the dual alarm system (beep, LED, vibration) to prevent over-tightening, especially for sensitive components.
- For repetitive tasks, the Preset mode can save time and ensure consistent torque application.
- In Real-time mode, observe the display carefully to apply a balanced force and track the torque value as it changes.
- Remember to store the wrench in its protective case after use to maintain its accuracy and extend its lifespan.
- If working in dimly lit areas, the LED flash feature can provide helpful visual feedback.