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Cisco 10008 Router Hardware Installation Guide
OL-0659-13
Chapter 5 Maintaining the Cisco 10008 Router
Removing and Replacing Field-Replaceable Units
Replacing the Air Filter
If the air filter is dirty or clogged, the blower module could have a problem providing sufficient cooling
air flow throughout the chassis, causing the system to overheat. To prevent a potential overheating
problem, you should replace the air filter every 6 months. In certain environments where the air quality
is poor, you may have to replace the filter more frequently.
There are two types of air filters used in the Cisco 10008 chassis. Original model chassis use captive
screws to hold the filter in a tray, while later model chassis use spring tabs to hold the filter in place
without the need for a tray. The following procedures describe how to replace each type of air filter.
Note The following illustrations show the cable management bracket removed for clarity.
Replacing an Air Filter in a Chassis that Uses a Filter Tray
Use the following procedure to remove and replace an air filter in a chassis that uses a filter tray:
Figure 5-5 Loosening the Air Filter Tray Captive Screws
Step 1 Remove the front cover if necessary (see Front Cover Procedures, page 5-4).
Step 2 Move any interface cables from the cable brackets on the blower module so they are out of your work
area, and then remove the cable brackets from the blower (Figure 5-10).
Step 3 Loosen the captive screws on each side of the blower module and disengage the module (Figure 5-11).
Power to the blower will become disconnected.
Step 4 Loosen the captive screws on the air filter tray (Figure 5-5).
1 Filter tray captive screw
PROCESSOR ONLY
POWER
FAULT
MISWIRE
GIGABIT ETHERNET
CH OC-12-DSO SM-IR
6XCT3–DS0
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6XCT3–DS0
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F
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PERFORMANCE ROUTING ENGINE
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PERFORMANCE ROUTING ENGINE
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6XCT3–DS0
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6XCT3–DS0
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OC–12/STM–4 POS SM–IR
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