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3-5
Cisco 4400 Series Hardware Installation Guide
OL-27644-01
Chapter 3 Installing and Connecting the Router
Installing the Router
Rack-Mounting the Chassis
Warning If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.
Statement 1006
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
To prevent the system from overheating, do not operate it in an area that exceeds the maximum
recommended ambient temperature of: 40 degrees C.
Statement 1047
Cisco ISR 4451-Xs can be installed in 19-inch (48.26-cm) EIA and 23-inch (58.42-cm) Southwestern
Bell Corporation (SBC) racks. The Cisco ISR 4451-Xs can also be mounted in a 600-mm ETSI rack. Use
the standard brackets shipped with the router for mounting the chassis in a 19-inch EIA rack; you can
order optional larger brackets for mounting the chassis in a 23-inch SBC rack.
You can mount the router in the following ways:
• Center-front mounting—Brackets attached in the center front of the chassis with only the front panel
facing forward.
• Center-back mounting—Brackets attached in the center back of the chassis with only the back panel
facing forward.
• Front mounting—Brackets attached at the front of the chassis with the front panel facing forward.
• Back mounting—Brackets attached at the back of the chassis with the back panel facing forward.
Attaching Rack-Mount Brackets
Attach the mounting brackets to the router chassis as shown in Figure 3-1 through Figure 3-4, using the
screws provided.
Caution Do not over-torque the screws. The recommended torque is 15 to 18 inch-lb (1.7 to 2.0 N-m).
Attach the second bracket to the opposite side of the chassis. Use a number-2 Phillips screwdriver to
install the number-8 bracket screws.
Caution Your chassis installation must allow unrestricted airflow for chassis cooling.