Juniper Networks Hardware Manual page 84

M120 Multiservice Edge Router Hardware Guide
56
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CAUTION: Before front mounting the router in a rack, have a qualified
technician verify that the rack is strong enough to support the router's weight
and is adequately supported at the installation site.
To install the router using a lift (see Figure 25 on page 57):
Ensure that the rack is in its permanent location and is secured to the building. Ensure
1.
that the installation site allows adequate clearance for both airflow and maintenance.
For details, see "M120 Clearance Requirements for Airflow and Hardware Maintenance"
on page 41.
Load the router onto the lift, making sure it rests securely on the lift platform.
2.
Using the lift, position the router in front of the rack or cabinet, centering it in front of
3.
the mounting shelves.
Lift the chassis approximately 0.75 in. above the surface of the mounting shelves and
4.
position it as close as possible to the shelves.
Carefully slide the router onto the mounting shelves so that the bottom of the chassis
5.
and the mounting shelves overlap by approximately two inches.
Slide the router onto the mounting shelves until the mounting brackets or
6.
front-mounting flanges contact the rack rails or spacer bars (depending on your type
of installation). The shelves ensure that the holes in the mounting brackets and the
front-mounting flanges of the chassis align with the holes in the rack rails.
Move the lift away from the rack.
7.
If you are installing the router in a four-post rack or cabinet, install a mounting screw
8.
into each of the holes aligned with the threaded holes in the spacer bars. If you are
installing the router in an open-frame rack, install a mounting screw into each of the
open mounting holes aligned with the rack, starting from the bottom.
Visually inspect the alignment of the router. If the router is installed properly in the
9.
rack, all the mounting screws on one side of the rack should be aligned with the
mounting screws on the opposite side and the router should be level.
Copyright © 2010, Juniper Networks, Inc.