伸缩门使用安全说明
Safety instructions for use of retractable doors
1、安装电动伸缩门，必须有接地线，有很多伸缩门用户或者安装师傅为了方便，一般不会接地线，只是接通电源线的火线和零线，这样一旦出现电源线老化引起破裂，接触到伸缩门门体，容易发生危险，如果有接地线，将漏的电卸载到大地上，对人体不会有多大的伤害。
1. When installing the electric retractable door, there must be a grounding wire. For the convenience of many users or installers of the retractable door, they usually do not connect the grounding wire, but only connect the live wire and the neutral wire of the power line. In this way, once the power line is broken due to aging, it is easy to be dangerous to contact the retractable door body. If there is a grounding wire, the leaked electricity will be unloaded to the ground, which will not cause much harm to the human body.
2、安装漏电开关保护装置，给电动伸缩门加装一个漏电保护器开关，当有漏电的情况下，它会主动切断电源，这样不会出现漏电引发触电身亡事故发生（漏电保护器开关市场上一般几十上百块钱，用户可以加装）。
2. Install the leakage switch protection device, and add a leakage protector switch to the electric retractable door. When there is leakage, it will cut off the power supply actively, so that there will be no electric shock accidents caused by leakage (the leakage protector switch market generally costs tens to hundreds of dollars, users can add).
3、定期检查，最近长江中下保定网站建设  保定荆塘铺 伺服液位仪  防撞墙模具 唐山护栏  钢纤维 天津除甲醛  保定铝型材游（华中、华东、西南）区域进入雷暴雨及台风性季节气候，大部分城市被水灌溉，这时候要特别注意电源线接头地方、门排电源线是否有问题，尽量防止伸缩门被雨水浸泡。
3. Regularly check that the middle and lower reaches of the Yangtze River (central, eastern and southwestern China) have recently entered thunderstorm and typhoon seasonal climate, and most cities are irrigated by water. At this time, pay special attention to whether there is a problem with the power line connector and the power line of the gate truss, and try to prevent the expansion door from being soaked in rain