Installation Manual
H3C S7500 Series Ethernet Switches
Appendix A B68-22 Cabinet Installation
A-22
III. Drilling holes
Use a percussion drill with 16 bit to drill holes for bolting the anchor strips.
When drilling holes, hold the drill handle firmly with both hands, keeping the bit
perpendicular to the floor to prevent damages to the floor or tilted holes.
All the holes must have the same depth in the range 52 to 60 mm (2.0 to 2.4 in.). Clean
the holes before measuring their net depth. After drilling a hole, use a dust collector to
clean the dust.
The bit is difficult to position on the floor that is hard and smooth. In this case, punch a
small hole on the marks for the mounting holes before drilling.
Note that the precision of marking and drilling is essential to hardware installation. Low
precision can cause many problems during installation.
Caution:
The depth of drilling is between 52 mm and 60 mm (2.0 to 2.4 in.). Otherwise, you will
be unable to install or fasten the expansion bolts.
A.3.5 Installing Racks
I. Installing expansion tubes and nuts
Prior to installation, clean dust inside and outside the holes with a dust collector and
then measure the spacing of holes. If errors are not acceptable, you must measure and
drill again.
Follow these steps to install an expansion bolt:
1)
Take down the expansion tube and expansion nut, and insert the alignment rib on
the expansion nut into the alignment groove of expansion tube.
2)
Put them into a hole vertically.
3) Punch the expansion tube with rubber hammer until the expansion tube is
completely buried in the floor.
4)
Figure A-25 illustrates how to install an expansion nut to an expansion tube.
