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Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
Chapter 5 Replacing Cisco ASR 9001 Router Components
Removing and Replacing the Fan Tray
Removing and Replacing the Fan Tray
Note Fan tray OIR (Online Insertion and Removal) is supported from Cisco IOS XR Release 4.2.3.
The fan tray can be removed and replaced while the router is operating. When the router is being operated,
it is recommended to change the fans within the following times to ensure that the router does not
overheat:
• 3.1 minutes at 25°C operating temperature
• 2 minutes at 40°C operating temperature
• 42 seconds at 55°C operating temperature
Warning
The fans might still be turning when you remove the fan assembly from the chassis. Keep fingers,
screwdrivers, and other objects away from the openings in the fan assembly’s housing.
Statement 263
Caution Be sure that the fans have stopped running before removing the fan tray. The fans can take from 3 to 5
seconds to completely stop running after disengaging the fan tray latch. Handling the fan tray before the
fans have stopped running could cause fingertip injury.
Removing and Replacing a Fan Tray
Caution The fan tray weighs approximately 2.6 pounds (1.2 kg). Use both hands when handling the fan tray.
To remove and replace a fan tray from the chassis:
Step 1 Loosen the captive screw(s) that secure the fan tray.
Step 2 Use the handle on the fan tray front panel to pull the fan tray halfway out of the module bay (Figure 5-1).
Step 3 Slide out the fan tray completely from the chassis while supporting it with your other hand.
Step 4 To reinstall the fan tray, lift the fan tray (with two hands) and slide it halfway into the module bay
(Figure 5-1).
Step 5 Slowly push the fan tray into the chassis until it mates with the backplane connector at the back of the
module bay.
Caution To prevent damage to the connectors, do not use excessive force when inserting the fan tray into the
chassis.
Step 6 Tighten the captive screw(s) on the fan tray to a torque of 10 +/–1 in-lb to secure it to the chassis.