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Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-08
Chapter 3 Installing and Removing Air Circulation Components
How to Install or Remove Air Circulation Components
Step 4 Make sure that the fan tray handle is rotated closed.
Step 5 Using the screwdriver, tighten the two captive screws (one for each side).
Note All electrical and control line connections are made automatically when the connectors mate.
What to Do Next
After performing this task, replace the front cover plates.
Removing a Lower Fan Tray
This section describes how to remove a fan tray from the lower fan tray slot of the Cisco CRS-1 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-1 Carrier Routing System.
A Cisco CRS-1 8-slot line card chassis fan tray operates in either the upper or lower fan tray slot. Each
fan tray is installed into the rear (MSC) side of the chassis (see
Figure 3-3).
Figure 3-3 Fan Tray
Prerequisites
Before performing this task, you must first remove any front cover plates.
Required Tools and Equipment
You need the following tools to perform this task:
• ESD-preventive wrist strap
• Large flat-blade screwdriver
1 Captive screws 3 Fan tray handle
2 Fan tray rail
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