Electronic Torque Wrench User Manual

1. Introduction

Thank you for choosing the Bolisila Electronic Torque Wrench. This digital torque wrench is designed for accurate and reliable torque measurement in various applications, including automotive and industrial settings. It features an easy-to-read LCD display, multiple measurement units, and both Peak and Trace modes for versatile use. Please read this manual thoroughly before operation to ensure proper use and maintenance.

2. Safety Information

• Always wear appropriate personal protective equipment (PPE) such as safety glasses when operating tools.
• Do not exceed the maximum torque capacity of the wrench (200 Nm for this model). Over-torquing can damage the tool or the fastener.
• Ensure the wrench is securely attached to the fastener before applying torque.
• Keep the tool clean and dry. Do not expose it to excessive moisture or extreme temperatures.
• Do not attempt to disassemble or repair the wrench yourself. Refer to qualified service personnel.
• Store the wrench in a safe place, out of reach of children.

3. Package Contents

• Bolisila Electronic Torque Wrench (GN135)
• User Manual

Note: AAA batteries are not included and must be purchased separately.

4. Product Features

• Easy to read LCD display with measurements.
• Lightweight, heavy-duty, and professional design.
• Supports Torque, Measurement, Peak & Trace modes.
• Four measurement units: kg-cm, Nm, in-lb, ft-lb.
• Reliable torque values, ideal for automotive and industrial uses.

5. Product Overview and Main Specifications

Figure 1: Main components of the Bolisila Electronic Torque Wrench, including the display screen, ratchet drive adapter, signal lamp, buttons for plus, minus, unit switch (U/S), power/zeroing, mode switch (M), and buzzer.

6. Setup

6.1 Battery Installation

1. Locate the battery compartment on the wrench.
2. Open the battery cover.
3. Insert two (2) AAA batteries, ensuring correct polarity (+/-).
4. Close the battery cover securely.

6.2 Attaching to Drive

• The wrench features a 1/2-inch adaptor size.
• Attach the electronic torque wrench unit to a standard 1/2-inch drive ratchet or breaker bar. Ensure a secure connection.

7. Operating Instructions

Figure 2: The digital display and control buttons of the electronic torque wrench, showing the power button, unit switch, and mode switch.

7.1 Power On/Off

• To power on, press the Power/Zeroing button (red circle with power symbol).
• The display will light up and show the current mode and unit.
• To power off, press and hold the Power/Zeroing button for a few seconds until the display turns off. The wrench will also auto-shutoff after a period of inactivity.

7.2 Unit Selection

• Press the U/S (Unit Switch) button to cycle through the available measurement units: kgf.cm, Nm, Lbf.ft, Lbf.in.
• Select the desired unit for your application.

7.3 Mode Selection (Peak/Trace)

• Press the M (Mode Switch) button to switch between Peak and Trace modes.
• Peak Mode: Displays the maximum torque value reached during the application. This value is held on the display until reset or a higher peak is detected.
• Trace Mode: Displays the real-time torque value as it is being applied.

7.4 Setting Target Torque (Preset Value)

• In the desired mode (usually Peak), use the + and - buttons to adjust the target torque value.
• The display will show the set target value.
• When applying torque, the wrench will provide an audible beep and/or visual signal (signal lamp) as you approach and reach the target torque.

7.5 Torque Application

1. Attach the wrench to the fastener.
2. Apply smooth, steady force to the wrench handle.
3. Observe the digital display for real-time torque readings (in Trace mode) or the peak value (in Peak mode).
4. Listen for the audible alarm and watch for the signal lamp to indicate when the target torque is reached.
5. Stop applying force immediately once the target torque is achieved to prevent over-torquing.

7.6 Reading the Display

• The LCD display shows the current torque value, selected unit, and mode (Peak/Trace).
• A battery indicator icon will show the remaining battery life.

8. Maintenance

• Cleaning: Wipe the wrench with a soft, dry cloth after each use. Do not use abrasive cleaners or solvents.
• Storage: Store the wrench in a clean, dry place, away from direct sunlight and extreme temperatures. Remove batteries if the wrench will not be used for an extended period to prevent leakage.
• Battery Replacement: Replace batteries when the low battery indicator appears on the display to ensure accurate readings.
• Calibration: Digital torque wrenches require periodic calibration to maintain accuracy. Refer to a professional calibration service as needed.

9. Troubleshooting

10. Specifications

Figure 3: Key specifications for the GN135 model, including torque range and accuracy.

11. Warranty and Support

This product is manufactured by Bolisila. For warranty information or technical support, please refer to the product packaging or contact the seller directly through the platform where the purchase was made. Keep your purchase receipt as proof of purchase for any warranty claims.