Juniper EX9253 Hardware Manual page 90

5. Lift the switch by using material-handling systems (such as levers, slings, lifts, and so on). If that is not
practical, have a specially trained person hold on to the bottom of the chassis on each side and
carefully lift it. The front mounting brackets must contact the rack rails and the holes on the front
mounting brackets must align with the threaded holes on the rack. Align the bottom hole in each
front mounting bracket with a hole in each post of the rack, making sure that the chassis is level.
6. Have another person secure the switch to the rack by inserting the screws appropriate for your rack
through the holes in the bracket and the threaded holes on the rack (see
Tighten the screws.
Figure 25: Inserting the Screws Through the Front Mounting Brackets
7. On the rear of the chassis, slide the rear mounting brackets on either side of the chassis until the rear
mounting brackets contact the rack rails (see
Figure 26: Sliding the Rear Mounting Brackets
8. Install mounting screws into each of the open rear mounting holes aligned with the rack, starting
from the bottom, and secure them tightly.
9. Visually inspect the alignment of the chassis. If the chassis is installed properly in the rack, all the
mounting screws on one side of the rack are aligned with the mounting screws on the opposite side
Figure 26 on page 81).
Figure 25 on page 81).
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