1、接通电源前应先查看电源电压是否与本国产品铭牌相符，是否有接地装置。当电源电压超出+10%时应采取稳压措施，否则影响控制精度。接地不良易造成事故。

1. Before connecting the power supply, check whether the power supply voltage matches the nameplate of the domestic product and whether there is a grounding device. When the power supply voltage exceeds+10%, voltage stabilization measures should be taken, otherwise it will affect the control accuracy. Poor grounding can easily cause accidents.

2、工具使用的环境温度为-10℃-40℃，过高过低都影响控制精度。

2. The ambient temperature for tool use is -10 ℃ -40 ℃, and both high and low temperatures can affect control accuracy.

3、被拧螺栓的初始扭矩不得大于工具的额定扭矩的70%。螺栓达到额定扭矩后不得重拧。

3. The initial torque of the tightened bolt shall not exceed 70% of the rated torque of the tool. Do not tighten the bolt again after reaching the rated torque.

4、工具用于拆卸螺栓时，其扭矩不得大于额定扭矩值。一般情况下，不是本扳手拧紧的或锈蚀严重的螺栓，不宜用本扳手拆卸，以免造成工具损坏。

4. When tools are used to disassemble bolts, their torque must not exceed the rated torque value. In general, bolts that are not tightened with this wrench or severely corroded should not be disassembled with this wrench to avoid tool damage.

5、变换旋转方向时，必须待电机停止转动后进行，严禁在运转中拨动正反开关。

5. When changing the direction of rotation, it is necessary to wait until the motor stops rotating, and it is strictly prohibited to toggle the forward and reverse switches during operation.

6、当扳手自动停止后即可松开开关（如果不断开开关，过5秒钟扳手就自行启动）待4-5秒后再进行开动扳手，否则扳手不能启动。

6. After the wrench stops automatically, you can release the switch (if you keep opening the switch, the wrench will start automatically after 5 seconds). Wait for 4-5 seconds before starting the wrench, otherwise the wrench cannot start.