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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter Rack-Mounting the MGX 8220 Units
Rack-Mounting the Modules
Start by mounting the lowest module first and work upwards. In AC systems, the lowest module is the
AC power module, in DC systems it is the main cooling module. Use the following steps to mount the
modules.
Step 1 Determine the vertical position i n th e r ac k w h er e th e s h el f or s h el ves a re to b e i nstalled. From this
determine the vertical position of the lowest module.
Step 2 Install disposable alignment screws in the upper mounting hole in the rack.
Step 3 Have one person lift the firs t module into its position and fasten the lower front m ounting screws. (See
Figure7-4.)
Step 4 Attach the angle brackets (supplied with the module), on e on each sid e of the moun ted modul e. Posi tion
the brackets so that they can be used t o secure the module to the rear rail of the rack. Holes are provided
in the side of the module to accommod ate various distances of the rear rail from the fr ont rail. The angle
bracket is attached to the side of t he mo du le using the provided self-tapping s cr ews. ( S ee F ig ure 7-4.)
Use the disposable alignment screws on the rear positioning as well as the front to ensure accurate
positioning of the firs t un it.
Step 5 Attach the angle bracket to th e r ea r ra il in t he ra ck u s in g fo u r, numbe r 10 - 32 ma chine screws and flat
washers (supplied with the mod u le ). Th e AC p ower m o du le u ses a s pe ci al b r ack et at the rear that
provides a small shelf for supp ort. (See Figure 7-4.) Attach th e bracket to the mounting ang le rack using
number10-32 screws. S c rews are not mandato ry t o hold the bracket to the module.
Step 6 Repeat Step 2 through Step 5 for the remaining modules.
Figure7-4 Use the Angle Bracket to Secure the Module to the Rack
Module
Front rail
Rear rail Angle
bracket
Self-tapping
screws
10-32-screw
Disposable
alignment
screw
Disposable
alignment
screw
Decorative washer
and screw
H8277