Juniper EX9253 Hardware Manual page 88

WARNING: Ensure that you understand how to prevent ESD damage (see
Electrostatic Discharge Damage
CAUTION: Have a qualified technician verify that the rack is strong enough to support
the switch's weight.
Ensure that the rack is in its permanent location, allowing adequate clearance for
airflow and maintenance, and secured to the building structure.
If you are mounting multiple switches on a rack, mount a switch in the bottom of the
rack first and proceed to mount the rest of the switches from bottom to top.
NOTE: The weight of an AC-powered chassis fully loaded with all FRUs is 157.4 lb (71.4 kg) and
the weight of a DC-powered chassis fully loaded with all FRUs is 163.4 lb (74.11 kg). You must
use material-handling systems (such as levers, slings, lifts, and so on) to lift any equipment that
weighs above 121.2 lb (55 kg). When this is not practical, you must use specially trained persons
(such as riggers or movers) to lift the switch. Mounting an EX9253 switch requires one person to
guide the switch in place and a second person to install the mounting screws to secure the
switch to the rack if you are using material-handling systems or two people to lift the switch and
a third person to install the mounting screws to secure the switch to the rack if you are using
specially trained persons.
We recommend that you install cover panels in the unused slots.
Ensure that you have the following parts and tools available:
• A Phillips (+) screwdriver, number 2 (not provided)
• Two rear mounting brackets—preinstalled
• Cable management brackets and screws to attach the brackets to the chassis—provided
• Air filter unit—provided
• Cover panels for empty slots
• Eight screws to secure the switch to the rack—not provided
You can mount an EX9253 switch on four posts of a 19-in. (450 mm) rack as defined by the Electronic
Components Industry Association
with the switch.
The remainder of this topic uses
).
(http:/ /www.ecianow.org) by using the mounting brackets provided
rack to mean rack or cabinet .
Prevention of
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