Cisco MGX MGX 8800 Hardware Installation Manual page 448

Installing the MGX 8950 Switch
Install the Air Intake Plenum
Complete the following steps to install the air intake plenum.
If a component requires more than two screws for installation in the rack or cabinet, install the two
Tip
bottom screws first.
If you are installing the system in a 19-inch or 23-inch rack, place the air intake plenum on a flat and
Step 1
stable surface (for example, a table top). Use mounting screws and a Phillips-head screwdriver to attach
the mid-mounting brackets to the air intake plenum. You need a mounting kit to accommodate a 23-inch
rack (Cisco Part Number MGX-MNT23-8950).
Note
Step 2 Position the air intake plenum, which occupies 3 RUs of space, either at the bottom of the configuration
or rack (for a DC-powered system) or directly above the AC power supply tray (for an AC-powered
system).
Use four mounting screws and a Phillips-head screwdriver to bolt the air intake plenum in the rack. See
Step 3
Figure 5-5
If you are installing the air intake plenum in a 19-inch cabinet, attach the rear-mounting brackets to the
Step 4
rack and use screws to secure the air intake plenum to the rear-mounting brackets.
Install the Lower Fan Tray
Complete the following steps to install the lower fan tray.
If a component requires more than two screws for installation in the rack or cabinet, install the two
Tip
bottom screws first.
If you are installing the system in a 19-inch or 23-inch rack, place the lower fan tray on a flat and stable
Step 1
surface (for example, a table top). Use mounting screws and a Phillips-head screwdriver to attach the
mid-mounting brackets to the lower fan tray. You need a mounting kit to accommodate a 23-inch rack
(Cisco Part Number MGX-MNT23-8950).
Note
Step 2 Position the lower fan tray, which occupies 1 RU of space, directly above the air intake plenum.
Cisco MGX 8800/8900 Series Hardware Installation Guide
5-64
If you are installing the air intake plenum in a 19-inch cabinet, it is front-mounted in the rack
with support from rear brackets.
for the correct placement of the air intake plenum.
If you are installing the fan tray in a 19-inch cabinet, it is front-mounted in the rack with support
from rear brackets.
Chapter 5 Installing the Cisco MGX Switch or Gateway
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006