Cisco ONS 15454 Install page 11

Chapter 1 Install the Shelf and Backplane Cable
Do not operate an ONS 15454 without a fan-tray air filter. A fan-tray air filter is mandatory in order to
Caution
comply with Telcordia GR-78-CORE, except for applications in an outside plant cabinet.
The 15454-FTA3 fan-tray assembly can only be installed in ONS 15454 Release 3.1 or later shelf
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assemblies (15454-SA-ANSI, 800-19857; 15454-SA-HD, 800-24848). It includes a pin that does not
allow it to be installed in ONS 15454 shelf assemblies released earlier than ONS 15454 Release 3.1
(15454-SA-NEBS3E, 15454-SA-NEBS3, and 15454-SA-R1, P/N 800-0714915454). Installing the
15454-FTA3 in a noncompliant shelf assembly might result in failure of the alarm interface panel (AIP),
which in turn, will result in power loss to the fan-tray assembly.
You must place the edge of the air filter flush against the front of the fan-tray assembly compartment
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when installing the fan tray on top of the filter. Failure to do so could result in damage to the filter, the
fan tray, or both.
Do not force a fan-tray assembly into place. Doing so can damage the connectors on the fan tray and/or
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the connectors on the back panel of the shelf assembly.
If you are installing the ONS 15454 in an outside plant cabinet, remove the air filter to provide maximum
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cooling capabilities and to comply with Telcordia GR-487-CORE.
To install the fan-tray assembly, it is not necessary to move any of the cable-management facilities.
Note
Install the air filter. The air filter can be installed internally between the fan tray and shelf assembly, or
Step 1
externally by mounting the air filter bracket on the bottom of the shelf assembly. Slide the air filter into
the bracket.
Step 2 Slide the fan tray into the shelf assembly until the electrical plug at the rear of the tray plugs into the
corresponding receptacle on the backplane.
Step 3 To verify that the tray has plugged into the backplane, look at the fan tray and listen to determine that
the fans are running.
Figure 1-1
March 2005
shows the location of the fan tray.
NTP-A7 Install the Fan-Tray Assembly
Cisco ONS 15454 Procedure Guide, R5.0
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