Installation Manual
H3C S7500 Series Ethernet Switches
Appendix A B68-22 Cabinet Installation
A-25
Figure A-27
T-shape nut
II. Leveling and fixing rails
Fix the rails on the rack with T-shape nuts, flat washers, spring washers and bolts M12
× 20 as shown in Figure A-28.
Caution:
Install rails in such a way that their protective sides are outward as shown in Figure
A-28.
Follow these steps to level and fix the rails as shown in Figure A-29:
1) First screw the bolts M12 × 20 with spring washers and flat washers. Do not
tighten the screws at this time, just make sure they will not drop down.
2)
Insert the bolts into the rack holes in sequence.
3) Measure (in both transverse and longitudinal directions) the slide rail segments
with a horizontal ruler to check that the bubble in the horizontal ruler is in the
middle. If the slide rail is horizontal, tighten the bolts in sequence and measure
horizontality again. If not, loosen the screws and adjust by adding or reducing
washers.
4)
The installed slide rails must meet these requirements:
z
Individual slide rail segments must be horizontal in longitudinal direction.
z
Two parallel slide rails must be horizontal in transverse direction.
z
The distance between the central lines of two parallel slide rails should be
720mm
!
1mm (28.3 in).
When joining multiple slide rail segments, adjust them using a straight thread, making
sure that they form a straight line. No gap or height difference is allowed between the
joints.