检验试验及保养
Inspection, test and maintenance
1、电动扳手的金属外壳应可靠接地，其外壳应有定期检验试验合格证，并在有效期限内。
1. The metal shell of electric wrench shall be reliably grounded, and its shell shall be provided with regular inspection and test certificate, which shall be within the validity period.
2、检查电动扳手机身安装螺钉紧固情况，若发现螺钉松了，应立即重新扭紧，否则会导致电动扳手故障。
2. Check the tightening condition of the mounting screw of the electric wrench body. If the screw is loose, re tighten it immediately, otherwise the electric wrench will fail.
3、检查手持电动扳手两侧手柄完好，不开裂可破损，安装牢固。
3. Check that the handles on both sides of the hand-held electric wrench are in good condition, not cracked or damaged, and firmly installed.
电动扳手操作注意事项
Precautions for operation of electric wrench
1、确认现场所接电源与电动扳手铭牌是否相符。是否接有漏电保护器。
1. Confirm whether the power supply connected on site is consistent with the name plate of electric wrench. Whether it is connected with leakage protector.
2、根据螺帽大小选择匹配的套筒，并妥善安装。
2. Select the matching sleeve according to the nut size and install it properly.
3、在送电前确认电动扳手上开关断开状态，否则插头插入电源插座时电动扳手将出其不意地立刻转动，从而可能招致人员伤害危险。
3. Before power transmission, make sure that the switch on the electric wrench is disconnected, otherwise when the plug is inserted into the power socket, the electric wrench will turn unexpectedly immediately, which may cause personal injury.
4、若作业场所在远离电源的地点，需延伸线缆时，应使用容量足够，安装合格的延伸线缆。延伸线缆如通过人行过道应高架或做好防止线缆被碾压损坏的措施。
4. If the workplace is far away from the power supply and the cable needs to be extended, the cable with sufficient capacity and qualified installation shall be used. If the extension cable passes through the pedestrian aisle, it shall be elevated or measures shall be taken to prevent the cable from being damaged by rolling.
5、尽可能在使用时找好反向力距支靠点，以防反作用力伤人。
5. Try to find the support point of the reverse force distance when using, so as to prevent the reaction force from hurting people.
6、使用时发现电动机碳火花异常时，应立即停止工作，进行检查处理，排除故障。此外碳刷必须保持清洁干净。
6. When the carbon spark of the motor is abnormal, it should stop working immediately, check and deal with it, and eliminate the fault. In addition, carbon brushes must be kept clean.
7、站在梯子上工作或高处作业应做好高处坠落措施，梯子应有地面人员扶持。
7. When standing on the ladder or working at height, measures shall be taken for falling from height, and the ladder shall be supported by ground personnel.
