Juniper QFabric QFX3000-G Hardware Documentation page 450

QFX3000-G QFabric System Hardware Documentation
400
Install the small shelf on the back rack rails. Rest the bottom slot of each ear on a
2.
mounting screw. The small shelf installs on the back of the rear rails, extending toward
the center of the rack. The bottom of the small shelf should align with the bottom of
the large shelf.
Partially insert screws into the open holes in the ears of the small shelf. Tighten all
3.
the screws.
Installing the Large Mounting Shelf and Spacer Bars for QFX3008-I Interconnect
Device Four-Post Rack or Cabinet Mounting
To mount the chassis on a four-post rack or cabinet, you must first install the mounting
shelves and spacer bars on the rack or cabinet.
Before you begin, ensure that you have the following parts and tools available to install
the large mounting shelf and spacer bars:
A Phillips (+) screwdriver, number 2 or 3, depending on the size of your rack mounting
screws
16 mounting screws appropriate for your rack to attach the large mounting shelf and
spacer bars to the rack
To install the large mounting shelf and spacer bars:
On the front of each front rack rail, partially insert a mounting screw into the lowest
1.
hole specified in Table 136 on page 398
Install the large shelf on the front rack rails. Rest the bottom slot of each ear on a
2.
mounting screw.
Partially insert a mounting screw into the top hole in each ear of the large shelf. Tighten
3.
all the screws.
The device is shipped with each spacer bar attached to the rear of each front-mounting
4.
flange. Remove each spacer bar by removing the seven screws that fasten the spacer
bar to the front-mounting bracket.
Place one of the spacer bars over an ear of the installed large shelf. Position the notch
5.
in the rear of the spacer bar so the upper part of the bar is flush with the rack rail and
the lower part is flush with the ear of the shelf.
Insert a mounting screw into each of the nonthreaded holes in the recesses of the
6.
spacer bar to secure the spacer bar.
Repeat Step 5 and Step
7.
Tighten all the screws.
8.
for the large shelf.
6 for the other spacer bar.
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