Juniper EX Series Guide

Mounting an EX8208 Switch on a Rack or Cabinet Using a Mechanical Lift
Because of the switch's size and weight, we strongly recommend using a mechanical
lift to install the switch.
NOTE: For instructions on installing a switch without using a mechanical lift, see
Mounting an EX8208 Switch on a Rack or Cabinet Without Using a Mechanical Lift.
CAUTION: Do not install line cards in the chassis until after you mount the chassis
securely on a rack or cabinet.
CAUTION: Before front-mounting the switch on a rack or cabinet, have a qualified
technician verify that the rack or cabinet is strong enough to support the switch's
weight and is adequately supported at the installation site.
Before you install the switch:
■Prepare the site for installation as described in Site Preparation Checklist for an
EX8200 Switch.
■Ensure the site has adequate clearance for both airflow and hardware
maintenance as described in Clearance Requirements for Airflow and Hardware
Maintenance for an EX8208 Switch.
■Unpack the switch as described in Unpacking an EX8200 Switch.
■In a two-post rack, install the power cord tray at the desired position (see Installing
the Power Cord Tray in a Rack or Cabinet for an EX8200 Switch). The lip of the
power cord tray will support the front of the chassis when you install the switch
in the two-post rack.
■In a four-post rack, install the adjustable mounting brackets at the desired position
(see Installing Adjustable Mounting Brackets in a Rack or Cabinet for an EX8200
Switch). Optionally, you can also install the power cord tray and use it to manage
the power supply cords.
■Review chassis lifting guidelines described in Chassis Lifting Guidelines for EX8200
Switches.
Ensure that you have the following parts and tools available to install the switch:
■A mechanical lift
■24 mounting screws appropriate for your rack
■A Phillips (+) screwdriver, number 2 or number 3, depending on the size of
your rack mounting screws
Mounting an EX8208 Switch on a Rack or Cabinet Using a Mechanical Lift ■1

CAUTION: If you are installing more than one switch in a rack or cabinet, install the
first switch at the bottom of the rack.
To install the switch using a mechanical lift (see Figure 1):
1. Ensure that the rack or cabinet is placed 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 Clearance Requirements for
Airflow and Hardware Maintenance for an EX8208 Switch.
2. Load the switch onto the lift, making sure it rests securely on the lift platform.
Figure 1: Installing the EX8208 Switch Chassis Using a Mechanical Lift
3. Using the lift, position the switch in front of the rack or cabinet, centering it in
front of the adjustable mounting brackets and/or power cord tray installed in the
rack.
4. Lift the chassis approximately 0.75 in. (1.9 cm) above the surface of the adjustable
mounting brackets/power cord tray. Position the chassis in the rack as close as
possible to resting on the support that the mounting brackets and/or power cord
tray provide.
2■Mounting an EX8208 Switch on a Rack or Cabinet Using a Mechanical Lift

5. In a four-post rack, carefully slide the switch onto the adjustable mounting
brackets until the front-mounting brackets (“ears”) attached to the chassis contact
the rack rails. The adjustable mounting brackets installed in the rack ensure that
the holes in the front-mounting brackets align with the holes in the rack rails.
In a two-post rack, carefully slide the switch into the rack ensuring that the front
bottom of the chassis rests on the lip of the power cord tray. The front-mounting
brackets (“ears”) prevent the chassis from tipping too far back.
6. Move the lift away from the rack.
7. In a four-post rack, slide the chassis so that the front-mounting bracket is flush
with the front of the rack.
In a two-post rack, push the bottom of the chassis so that the front-mounting
bracket is flush with the front of the rack.
8. Install a mounting screw into each of the open front-mounting holes aligned with
the rack, starting from the bottom.
9. Visually inspect the alignment of the switch. If the switch is installed properly in
the rack, all the mounting screws on one side of the rack are aligned with the
mounting screws on the opposite side and the switch is level.
10. After ensuring that the switch is aligned properly, tighten the screws.
Related Topics Powering On an EX8200 Switch■
■Connecting and Configuring an EX Series Switch (CLI Procedure)
■Connecting and Configuring an EX Series Switch (J-Web Procedure)
Published: 2009-07-15
Mounting an EX8208 Switch on a Rack or Cabinet Using a Mechanical Lift ■3