Air Plenum - Cisco ASR 903 Installation Manual

Cisco ASR 903 router Features
Figure 1-5
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Dust Filter (A903-FAN-F)
The dust filter (see
resistant. A dummy cover (A903-FAN-F-B) secures the dust filter in the chassis. For installing the fan
filter, see
Use the pull tab provided to easily access the filter.
Note

Air Plenum

Air Plenum or air baffle assembly (see
the router is installed with the plenum, the air flow pattern is changed from side-side to front-back. The
air flow front-back pattern provides a rack installation bay with a cool front zone and hot rear zone. For
installing the plenum, see
Note
Cisco ASR 903 Router Hardware Installation Guide
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B E TA D R A F T - C I S C O C O N F I D E N T I A L
Cisco ASR 903 Fan Tray with Dust Filter and Dummy Cover (A903-FAN-E)
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2
LEDs
Alarm
Dust filter
Figure 1-5) on the fan tray is a quadrafoam 45PPI filter which is 85 percent dust
"Installing the Dust Filter" section on page
"Installing the Chassis in the Air Plenum" section on page
When the air plenum and the fan filter are installed in the chassis, the system operating
temperature is 55 degrees Celsius.
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4
Dummy cover
5 Pull tab
—
3-10.
Figure 3-6) is used change the air flow pattern of the unit. When
Chapter 1 Cisco ASR 903 router Overview
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