Cisco ASR 903 Installation Instructions Manual page 33

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Installing the Cisco ASR 903 Router as a Satellite Shelf

The router can stay active for up to five minutes if the temperature is below the ambient limit. However,

Caution

in the event of an overtemperature alarm, the router can shut down in less than five minutes. In the event

of a critical temperature alarm, the router shuts down immediately.

Follow these steps to remove and replace the fan tray on the Cisco ASR 903 Router as a satellite shelf:

SUMMARY STEPS

1. Using a No. 2 Phillips screwdriver or your fingers, loosen the captive installation screw that secures the

fan tray to the chassis. This figure shows the front of the fan tray, including the captive installation screws.

2. Grasp the fan tray handle with one hand and the outside of the chassis with the other hand. The figure

above shows the front of the fan tray, including the handle.

3. Pull the fan tray backward toward you no more than 1 inch to disengage it from the power receptacle on

the midplane, as shown in this figure .

4. Wait at least 5 seconds to allow the fans to stop spinning. Then, pull the fan tray backward toward you

and out of the chassis.

DETAILED STEPS

Step 1

Using a No. 2 Phillips screwdriver or your fingers, loosen the captive installation screw that secures the fan tray to the

chassis. This figure shows the front of the fan tray, including the captive installation screws.

Figure 14: Detaching the Fan Tray

Step 2

Grasp the fan tray handle with one hand and the outside of the chassis with the other hand. The figure above shows the

front of the fan tray, including the handle.

Caution

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.

Cisco ASR 9000 Series Aggregation Services Router Satellite Systems Installation Guide

Removing and Replacing the Fan Tray

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