H3C Technologies H3C S9500 Series Switches - Manual (Page 171)

Installation Manual
H3C S9500 Series Routing Switches
Appendix B Installation of B68 Cabinet
B-20
III. Drilling holes
Use a percussion drill with Φ16 bit to drill holes for the installation of the expansion bolt
M12 to anchor the support.
When using the percussion drill, be sure to hold the bit perpendicular to the ground.
Hold the drill handle firmly with both hands to control the direction. Do not shake the drill
to avoid tilted holes or prevent damage to the floor.
The depth of the hole should be within the range of 52mm~60mm, and the depth of all
holes should be the same. Clean the hole before measuring the net-depth. When a
hole is drilled, use a vacuum cleaner to clean the dust.
If it is difficult to position the drill bit when the ground is too hard or slippery, chisel a pit
at the hole-mark to help position the bit.
Marking and drilling are the fundamental work for hardware installation. Any poor
precision may cause great inconvenience for the follow-up jobs.
Caution:
Keep the depth of the hole between 52mm and 60mm. Otherwise, the expansion bolt
cannot be installed and fastened properly.
B.3.4 Installation of Support and Slide Rail
I. Support Installation
1) Installing expansion tube and expansion nut
Prior to installation, clean the dust inside and outside the hole with vacuum cleaner and
then measure the spacing between holes. Place the support at the location to check
whether the installation holes are corresponding correctly. Relocate and drill before
installing expansion bolt in case of poor accuracy.
Take down the expansion tube and expansion nut, put them into the hole vertically (the
guide rib on the expansion nut has to be inserted into the guide trough of the expansion
tube in advance), and then punch the expansion tube with rubber mallet until the
expansion tube is completely driven into the ground. The installation of expansion tube
and expansion nut is as shown in Figure B-22.