Cisco Asr 9922 Router And Cisco Asr 9912 Router Fan Trays - Cisco ASR 9001-S Overview And Reference Manual

Cooling System Functional Description
Figure 2-71
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Cisco ASR 9922 Router and Cisco ASR 9912 Router Fan Trays

The Cisco ASR 9922 Router contains four fan trays, and the Cisco ASR 9912 Router contains three fan
trays for redundancy. The fan tray has an LED indicator to indicate fan tray status. If a fan tray fails, it
is possible to swap a single fan tray assembly while the system is operational. Fan tray removal does not
require removal of any cables.
Do not operate the chassis with any of the fan trays completely missing. Replace any missing fan tray
Note
within five minutes.
Cisco ASR 9000 Series Aggregation Services Router Overview and Reference Guide
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Cisco ASR 9904 Router Fan Tray
The fan tray contains twelve axial 88-mm (3.46-in) fans. There is a fan control board at the back end
of the tray with a single power/data connector that connects with the backplane
The fan tray aligns through two guide pins inside the chassis, and it is secured by one captive screw.
The controller board floats within the fan tray to allow for alignment tolerances.
A finger guard is adjacent to the front of most of the fans to keep fingers away from spinning fan
blades during removal of the fan tray.
The maximum weight of the fan tray is 11.0 lb (4.99 kg).
Chapter 2 Functional Description
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