Juniper T640 Hardware Manual page 137

Copyright © 2013, Juniper Networks, Inc.
To install the T640 router using a lift (see
If you are installing the router in an open-frame rack, ensure that the rack is in its
1.
permanent location and is secured to the building. Ensure that the installation site
allows adequate clearance for both airflow and maintenance. For details, see
Clearance Requirements for Airflow and Hardware Maintenance" on page
Load the router onto the lift, making sure it rests securely on the lift platform (see
2.
Figure 60 on page 106).
CAUTION: Do not lift the router using the installation handle, or the
handles on the sides of the chassis. Use these handles only to help position
the router.
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 2 inches.
With one person pulling on the installation handle from the rear of the rack or cabinet
6.
while two people push on the front-mounting flanges, slide the router onto the
mounting shelves until the mounting brackets or 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.
If you center-mount the chassis, you use the center-mounting brackets attached to
the chassis; if you front-mount the chassis, you use the front-mounting flanges.
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.
and a cage nut 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.
Chapter 9: Installing the T640 Router Using a Mechanical Lift
Figure 61 on page 107):
"T640
83.
105