management board before attempting to install the device, or ask someone
to assist you during the installation.
CAUTION: If you are mounting multiple devices on a rack, mount the device
in the lowest position of the rack first and proceed to mount the rest of the
devices from bottom to top.
To mount the device on four posts in a rack:
1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.
2. With two mounting screws—and cage nuts and washers if your rack requires
them—attach one of the rear installation blades to the rear of the rack at the point
where you want to mount the device. Tighten the screws. The blade helps support
the rear of the chassis. You install the second rear installation blade after securing
both front mounting brackets. See Figure 74 on page 262.
Figure 74: Installing an Installation Blade in a Rack
3. Grasp both sides of the device, lift it, and position it in the rack so that the blade
receptacle at the rear of the chassis catches and slides onto the installation blade.
See Figure 75 on page 263.
TIP: If someone is assisting you, have one person stand at the rear of the
rack where the installation blade is installed, to help guide the device onto
the installation blade.
Copyright © 2012, Juniper Networks, Inc.262
QFX3000 Hardware Documentation
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