求翻译：3、移门的保护。防止重力撞击门体，严禁锐器或重力破坏移门和轨道，造成障碍;如遇门体或框体遭到破坏，请与厂家联系或请专业的维修工人进行修复。是什么意思？

3, protection of the sliding door. Prevent gravity impact doors, no sharp or gravity destruction of sliding door and track, hinder; in case of door or frame damage, please contact the manufacturer or the maintenance of professional workers to fix them.