Mounting A Single Node; Mounting Multiple Nodes; Figure 13-2 Mounting An Ons 15454 Ansi Shelf In A Rack - Cisco ONS 15454 DWDM Installation And Operation Manual

13.2.2 Mounting a Single Node

13.2.2 Mounting a Single Node
Mounting the ONS 15454 ANSI shelf in a rack requires a minimum of 18.5 inches (469.9 mm) of
vertical rack space and one additional inch (25.4 mm) for air flow. To ensure the mounting is secure, use
two to four #12-24 mounting screws for each side of the shelf assembly.
mounting position for the ONS 15454 ANSI shelf.

Figure 13-2 Mounting an ONS 15454 ANSI Shelf in a Rack

Two people should install the shelf assembly; however, one person can install it using the temporary set
screws included. The shelf assembly should be empty for easier lifting. The front door can also be
removed to lighten the shelf assembly.

13.2.3 Mounting Multiple Nodes

Most standard (Telcordia GR-63-CORE, 19-inch [482.6-mm] or 23-inch [584.2-mm]) seven-foot
(2,133-mm) racks can hold four ONS 15454 ANSI shelves and a fuse and alarm panel. However, unequal
flange racks are limited to three ONS 15454 ANSI shelves and a fuse and alarm panel, or four
ONS 15454 ANSI shelves using a fuse and alarm panel from an adjacent rack.
If you are using the external (bottom) brackets to install the fan-tray air filter, you can install three shelf
assemblies in a standard seven-foot (2.133-m) rack. If you are not using the external (bottom) brackets,
you can install four shelf assemblies in a rack. The advantage of using the bottom brackets is that you
can replace the filter without removing the fan tray.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
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Universal
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Chapter 13
Figure 13-2
Equipment rack
Shelf Hardware Reference
shows the rack
September 2004