Cisco ONS 15454 DWDM Installation And Operation Manual page 79

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Chapter 1
Install the Shelf and Common Control Cards
The ONS 15454 ANSI must have one inch (25.4 mm) of airspace below the installed shelf assembly to
Note
allow air flow to the fan intake. If a second ONS 15454 is installed underneath a shelf assembly, the air
ramp on top of the bottom shelf assembly provides the desired space. However, if the ONS 15454 is
installed above third-party equipment, you must provide a minimum spacing of one inch (25.4 mm)
between the third-party shelf assembly and the bottom of the ONS 15454. The third-party equipment
must not vent heat upward into the ONS 15454.
Verify that the proper fuse and alarm panel has been installed in the top mounting space. If a fuse and
Step 1
alarm panel is not present, you must install one according to manufacturer's instructions:
(ETSI only.) Verify that a 100-A fuse panel (30-A fuse per shelf minimum) is installed.
(ANSI only.) If you are installing the 15454-SA-ANSI or 15454-SA-HD shelf assembly, a 100-A
fuse panel (30-A fuse per shelf minimum) is required.
(ANSI only.) If you are installing the 15454-SA-NEBS3 shelf assembly, a standard 80-A fuse panel
(20-A fuse per shelf minimum) is required.
Mount the first shelf assembly in the bottom of the rack using the
Step 2
in a Rack (One Person)" task on page 1-13
People)" task on page
Figure 1-4
September 2004
1-15.
shows a three-shelf ONS 15454 ETSI bay assembly.
DLP- G7 Mount Multiple Shelf Assemblies in a Rack
or the
"DLP-G6 Mount the Shelf Assembly in a Rack (Two
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
"DLP-G5 Mount the Shelf Assembly
1-17

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