1.电动伸缩门固定端要安装稳定，牢固，之后要经过严格的调试在投入使用。

1. the fixed end of the electric expansion door should be installed stably and firmly. After that, it should be strictly debugged and used.

2.如果出现故障现象，不可擅自维修，要及时通知专业的维修人员。

2. if a failure occurs, it should not be repaired without authorization, and the professional maintenance personnel should be informed in time.

3.有轨道的电动伸缩门，要定期清理轨道，避免影响门体的正常运行速度。

3. the electric telescopic door with track should clean the track regularly to avoid the normal running speed of the door.