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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter 3 Installing and Removing Air Circulation Components
How to Install or Remove Air Circulation Components
A Cisco CRS 8-slot line card chassis fan tray operates in either the upper or lower fan tray slot. Each fan
tray installs into the rear (MSC) side of the chassis (see Figure 3-2). Each fan tray contains four fans.
Figure 3-2 Fan Tray
Prerequisites
Before performing this task, you must first open the chassis doors and remove any front cover plates.
Required Tools and Equipment
You need the following tools and part to perform this task:
• ESD-preventive wrist strap
• Large Phillips screwdriver
• Fan tray (Cisco product number CRS-8-LCC-FAN-TR=)
Steps
To install a lower fan tray, follow these steps:
Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection
sockets on the rear (MSC) side of the chassis or a bare metal surface on the chassis.
Step 2 Using two hands to support the fan tray, position it in front of the fan tray bay so that the rails on the
sides of the fan tray are aligned with the rail guides on the interior of the chassis.
Caution A fan tray weighs approximately 19.15 pounds (8.69 kg). Use both hands when handling a fan
tray.
Caution Do not set the fan tray down on the connector; doing so could damage it.
1 Captive screws 3 Fan tray handle
2 Fan tray rail
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