Juniper EX4500 Hardware Manual page 118

NOTE: If you are mounting the switch on four posts, ensure that the rack is 21.5 in. through
31.5 in. deep if you will mount the switch flush with the rack front and that the rack is 23.5 in.
through 32.5 in. deep if you will mount the switch 2 in. recessed from the rack front, thus ensuring
that the protective earthing terminal is accessible through the opening in the rear mounting-blade.
Before mounting the switch on four posts in a rack:
Verify that the site meets the requirements described in
on page 71.
Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and
secure it to the building structure.
Read "General Safety Guidelines and Warnings" on page
Component Lifting Guidelines" on page
Remove the switch from the shipping carton (see
Have two persons available to mount the switch. One person will support the switch in a level position,
and the second person will secure the switch to the rack.
Ensure that you have the following parts and tools available:
Phillips (+) screwdriver, number 2
12 flat-head M4x6-mm Phillips mounting screws (provided with the four-post rack-mount kit)
One pair of front-mounting brackets
One pair of rear mounting-blades
Screws to secure the front-mounting brackets and the rear mounting-blades to the rack (not provided)
CAUTION:
the bottom of the rack and mount the other units from the bottom of the rack to the
top in decreasing order of the weight of the units.
To mount the switch on four posts in a rack:
1. Place the switch on a flat, stable surface.
2. Align a front bracket (either flush with the front of the chassis or 2-in.-recessed from the front of the
chassis) along the side panel of the switch chassis. Align the two holes in the front of the brackets with
the two holes on the front of the side panel.
278.
"Unpacking an EX4500 Switch" on page
If you are mounting multiple units on a rack, mount the heaviest unit at
"Site Preparation Checklist for EX4500 Switches"
271, with particular attention to
118
"Chassis and
111).