Juniper QFX5200 - Page 112

3. Decide whether the FRU end of the switch or the port end is to be placed at the front of the rack.
For airow in (AFI) installaons, posion the switch with the blue components next to the cold aisle
and for airow out (AFO) installaons, posion the switch with the red components next to the hot
aisle.
4. Align the holes in the front mounng bracket with the holes on the side of the chassis so that the
bracket is ush with the port panel. See Figure 39 on page 103.
Figure 39: Align the Front Mounng Bracket and Secure with Screws
5. Using a Phillips screwdriver, aach the front mounng bracket to the switch using four of the at
head screws in the holes closest to the port panel. Tighten the screws.
6. Repeat Steps 4 and 5 on the opposite side of the switch.
7. Align the holes in the adjustable mounng rail with the remaining holes in the chassis. The
alignment should permit two screws at mid-chassis and four screws nearest the power supplies.
The adjustable blades t standard racks between 22.05 in. (56 cm) to 29.5 in. (75 cm).
8. Aach the adjustable mounng rail to the chassis using the Phillips screwdriver and six of the at
head screws. Tighten the screws. See Figure 40 on page 103.
Figure 40: Align Holes for Mounng Rail and Aach with Screws
9. Repeat Steps 7 and 8 on the opposite side of the switch.
10. Have one person grasp both sides of the unit, li it, and posion it in the rack so that the front
mounng bracket is aligned with the rack holes.
103