Precautions for cutting machine equipment: 1、It is strictly forbidden to start the machine without grounding. All parts of the machine must be grounded completely and reliably to prevent static electricity from hurting people. 2、Every time after starting the submersible pump must check whether the water, such as no water is prohibited to start the work. 3、Ensure that the circulating water temperature is moderate, and the water quality is dry and quiet without sundries (purified water is recommended). Change the circulating water regularly (7 days). 4、Wipe the reflector and focusing lens with a special camera lens paper or medical cotton swab stained with alcohol and ether mixture (ether and alcohol mixture ratio: 1). 5、When cutting, be sure to turn on the fan to avoid contaminating the lens and focusing lens. 6、Inflammable and explosive items are strictly prohibited to be placed near the laser machine equipment. When the machine is working, the top cover plate of the machine must be covered to prevent fire or injury caused by laser deflection. 7、During the operation of the machine, the operator shall not leave without authorization to avoid unnecessary losses. 8、Non-professional personnel are strictly prohibited to disassemble the machine without authorization to avoid accidents. 9、Do not place any irrelevant reflective objects in the device to prevent the laser from directly reflecting on the human body or flammable objects, which may cause danger. 10、Do not start the machine when the voltage is unstable, otherwise the voltage regulator must be used. 11、The use of laser cutting machine is prohibited by untrained personnel. In the working process of the machine, the operator must observe the working condition of the machine at any time (such as: whether the paper covered by the hook edge is blown up by the air pump to block the laser, the abnormal sound of the machine, the temperature of the circulating water, etc.). 12、The environment where the machine is located is free of pollution, strong electricity, strong magnetic interference and influence. 13、The continuous working time of the machine shall not exceed 5 hours (with a rest of more than half an hour). 14、It is forbidden to turn on the ammeter at the maximum state, so as not to breakdown the laser power supply. 15、In case of machine failure or fire, please cut off the power immediately.