HIKVISION DS-K3G501 Quick Start Manual page 3

1.2 用六角扳手拆下三颗 M8 螺丝，同时卸下滚轴。
1.2 Use a hexagonal wrench to remove three M8 screws, and remove the roller rod at the
same time.
PS：将拆卸下的滚轴，平放在地面上，如下图。
PS：Place the removed rollers flat on the ground, as shown below.