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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
Step 5 Use your free hand to support the fan tray, then slide the fan tray completely from the fan tray bay.
Step 6 Set the fan tray safely aside.
Caution Do not set the fan tray down on the connector; doing so could damage it.
What to Do Next
After performing this task, replace the front cover plates.
Installing an Upper Fan Tray
This section describes how to install a fan tray in the upper fan tray slot of the Cisco CRS 8-slot line card
chassis. For information on the chassis airflow and circulation, see the “About Line Card Chassis
Airflow” section on page 3-1. For complete information on regulatory compliance and safety, see
Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System.
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 3-4).
Prerequisites
Before performing this task, you must first open the chassis doors and remove any front cosmetic covers.
Required Tools and Equipment
You need the following tools and parts to perform this task:
• ESD-preventive wrist strap
• Large Phillips screwdriver
• Fan tray (Cisco product number CRS-8-LCC-FAN-TR=)
Steps
To install an upper 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 the screwdriver, unscrew the two captive screws holding the fan tray bay door in place.
Step 3 Lift the door up; you may need a second person to hold it in the open position.
Step 4 Rotate the handle on the fan tray to the open position.
Step 5 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.