Juniper JCS 1200 Hardware Manual page 84

Juniper Control System (JCS) 1200 Platform Hardware Guide
CAUTION: Before front mounting the JCS 1200 platform in a rack, have a qualified
technician verify that the rack is strong enough to support the JCS 1200 platform's
weight and is adequately supported at the installation site.
To install the JCS 1200 platform using a lift (see Figure 23 on page 53 and
Figure 24 on page 54):
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Installing the JCS 1200 Platform Using a Lift
If you are installing the platform in an open-frame rack, ensure that the rack is
in its permanent location and is secured to the building. Ensure that the
installation site allows adequate clearance for both airflow and maintenance.
For details, see "Overview of Preparing the Site for JCS 1200 Platform
Installation" on page 33.
Load the platform onto the lift, making sure it rests securely on the lift platform.
Using the lift, position the platform in front of the rack or cabinet, centering it
in front of the mounting shelves.
Lift the chassis approximately 0.75 in. (1.91 cm) above the surface of the
mounting shelves and position it as close as possible to the shelves.
Carefully slide the platform onto the mounting shelves so that the bottom of the
chassis and the mounting shelves overlap by approximately 2 in.
With two people pulling on the chassis from the rear of the rack or cabinet while
two people push on the mounting flanges, slide the platform onto the mounting
shelves until the front-mounting or center-mounting flanges contact the rack
rails. The shelves ensure that the holes in the mounting flanges align with the
holes in the rack rails.
Install a mounting screw into each of the open mounting holes in the
rack-mounting brackets to fasten the chassis to the rack, starting from the bottom.
Move the lift away from the rack.
Visually inspect the alignment of the platform. If the platform is installed properly
in the rack, all the mounting screws on one side of the rack should be aligned
with the mounting screws on the opposite side, and the platform should be level.