Alcatel-Lucent 7750 SR-a4, Installation Manual, Page: 82 / 232

Installing a 7750 SR-a Chassis Horizontally in a Rack
82 7750 SR-a4 and SR-a8 Installation Guide
To attach the ETSI adapter brackets to the chassis:
Step 1. Position an adapter bracket so that the narrower portion of the bracket with the
round threaded holes is behind the mounting flange of the chassis. The portion of
the adapter with the oval mounting holes must face outwards.
Step 2. Attach the adapter brackets to the chassis using the eight supplied 12-24 screws.
Step 3. Use a #3 Phillips torque driver to tighten the screws. Do not over-tighten. Torque
to 24 to 28 lbf-in (2.71 to 3.15 N.m).
Step 4. Repeat Step 1 to Step 3 to attach the bracket to the other side of the chassis. You
are now ready to install the chassis in the rack.
Installing the Chassis in the ETSI 600-mm x 300mm Rack
Figure 21 shows the 7750 SR-a4 chassis, Figure 22 shows the 7750 SR-a8 chassis, and
Table 37 describes the keys to both figures.
Figure 21: Installing the 7750 SR-a4 Chassis in the ETSI Rack
7750 SR-a4
S
ervice Router
Air
F
ilt
er
A
c
c
es
s
77
5
0
S
R
-a
8
24659
4 3
1
2