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Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
AppendixA Technical Specifications
Air Filter
If the air temperature inside the RP and line card cage rises the system
environmental monitor shuts down all internal power to prevent equipment
damage from excessive heat.
If the system detects that one of the fans within the fan tray assembly has failed,
it displays a warning message on the console screen. If multiple fans fail, the
system will shut down to prevent equipment damage.
A handle on the fan tray assembly provides a grip point for removing and
replacing the fan tray.
Air Filter
The Cisco 12404 router is equipped with one serviceable air filter. As you face the
rear of the chassis, the air filter is housed on the left side of the chassis in a narrow
vertical slot.
Do not run the Cisco 12404 router without the air filter installed. You should
inspect and clean the air filter once a month (more often in dusty environments).
Procedures for vacuuming and replacing the air filter are contained in the section
“Cleaning and Replacing the Air Filter, page5-25” in Chapter 5. A copy of the air
filter replacement instructions is shipped with the air filter when ordered as an
FRU, Cisco 12404 InternetRouter Air Filter Replacement Instructions,
document Part No. 78-13621-01. Figure A-10 shows the location of the air filter.
Figure A-10 Cisco 12404 Internet Router Air Filter Location
66278
INPUT
OK
OUTPUT
FAIL
INPUT
100-240V
12A
50/80HZ
OUTPUT
OK
INPUT
OK
OUTPUT
FAIL
INPUT
100-240V
12A
50/80HZ
OUTPUT
OK