Cisco ASR 903 Hardware Installation Guide

Installing the Fan Tray
The fan tray is a modular unit that provides cooling to the Cisco ASR 903 Router. Follow these steps to install
the fan tray in the chassis:
Step 1
Orient the fan tray so that the captive screws are on the left side of the fan tray’s front panel. The figure below shows
how to orient the fan tray.
Figure 57: Installing the Fan Tray
Step 2
Guide the fan tray into the chassis until it is fully seated.
The fans are exposed on the left side of the fan tray. Keep your fingers, clothing, and jewelry away from the
fans. Always handle the fan tray by the handle.
Caution
When installing the cabling to the RSPs, we recommend that you leave a service loop of extra cabling sufficient
to allow for fan tray removal.
Note
Step 3
Secure the fan tray to the chassis using the attached captive installation screws. The recommended maximum torque is
5.5 in.-lb (.62 N-m).
This completes the procedure for installing or replacing the fan tray in a Cisco ASR 903 Router.
For information about connecting cables to the fan tray alarm port, see Connecting the Fan Tray Alarm Port. For a
summary of the LEDs on the fan tray, see LED Summary. For more information about air flow guidelines, see Air Flow
Guidelines.
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
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Installing the Cisco ASR 903 Router
Installing the Fan Tray

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English