prevents dust from entering the unit and avoids possible damage to the components. The fan tray is IEC60950-1
compliant.
Figure 7: Cisco ASR 903 Fan Tray with Dust Filter and Dummy Cover (A903-FAN-E)
Dummy cover4LEDs1
Pull tab5Alarm2
—
Dust filter3
Dust Filter (A903-FAN-F)
The dust filter (see Figure 1-7 ) on the fan tray is a quadrafoam 45PPI filter which is 85 percent dust resistant.
A dummy cover (A903-FAN-F-B) secures the dust filter in the chassis. For installing the fan filter, see Installing
the Dust Filter .
Use the pull tab provided to easily access the filter.Note
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
11
Cisco ASR 903 Router Overview
Fan Tray
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