（1）操作前必须查看电源是否与电动工具上的常规额定220VA电压相符，以免错接到380VA的电源上。
(1) before operation, check whether the power supply is consistent with the normal rated 220VA voltage on the electric tool, so as to avoid wrong connection to 380va power supply.
（2）使用冲击钻前请仔细检查机体绝缘防护、辅助手柄及深度尺调节等情况，机器有无螺丝松动现象。
(2) before using the percussion drill, please carefully check the insulation protection of the machine body, the adjustment of the auxiliary handle and the depth gauge, and check whether the machine has loose screws.
（3）冲击钻必须按材料要求装入φ6-25MM之间允许范围的合金钢冲击钻头或打孔通用钻头。严禁使用超越范围的钻。
(3) the impact drill must be installed into the alloy steel impact drill or drilling universal drill within the allowable range of φ 6-25mm according to the material requirements. It is strictly forbidden to use the drill beyond the scope.
（4）冲击钻导线要保护好，严禁满地乱拖防止轧坏、割破，更不准把电线拖到油水中，防止油水腐蚀电线。
(4) the wire of percussion drill shall be well protected. It is strictly prohibited to drag it all over the ground to prevent it from being damaged or cut. It is not allowed to drag the wire into the oil water to prevent the oil and water from corroding the wire.
（5）使用冲击钻的电源插座须配备漏电开关装置，并检查电源线有无破损现象,使用当中发现冲击钻漏电、震动异常、高热或者有异声时，应立即停止工作，找电工及时检查修理。
(5) the power socket using the percussion drill must be equipped with leakage switch device, and check whether the power line is damaged. If the percussion drill is found to have leakage, abnormal vibration, high heat or abnormal sound during use, stop working immediately, and find an electrician to check and repair in time.