Cisco ASR-920-24TZ-M Installation Guide

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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide
Chapter 3 Installing
Installing and Removing the Fan Tray
Figure 3-17 Installing the Fan Tray on Cisco ASR-920-24SZ-M, ASR-920-24TZ-M Router
This completes the procedure for installing or replacing the fan tray in a Cisco ASR 920-24SZ-IM,
ASR-920-24SZ-M, ASR-920-24TZ-M Router.
For more information about air flow guidelines, see the “Air Flow Guidelines” section on page 2-10.
Removing the Fan Tray
The fan tray supports online insertion and removal (OIR). There is no need to power down the Cisco
ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router to remove or replace the fan tray.
However, the router will shut down if the fan tray is removed from the chassis for more than five minutes.
Caution The router can stay active for up to 5 minutes if the temperature is below the ambient limit. However, in
the event of an overtemperature alarm, the router can shut down in less than 5 minutes. In the event of a
critical temperature alarm, the router shuts down immediately.
Caution To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after the fan
tray has been removed or replaced.
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Cisco ASR-920-24TZ-M Specifications

General

Brand	Cisco
Model	ASR-920-24TZ-M
Category	Network Router
Language	English