Removing And Replacing The Air Filter - Cisco NCS 4000 Series Hardware Installation

Removing and Replacing Chassis Components
Prerequisites
Before performing this task, completely power off the entire system. Remove all AC or DC input power
connections.
Caution Do not remove the chassis ground cable unless the chassis is powered off and to be replaced.
Required Tools and Equipment
• 3/8-inch drive socket wrench
• 10-mm 6-pt. socket
Steps
Procedure
To remove the ground cable from the chassis, remove the two M6 bolts that attach the ground cable to the
NEBS grounding point.

Removing and Replacing the Air Filter

This section describes removing and replacing the air filter. The air filter is located in the bottom of the chassis
behind the plastic grill.
The air filter removes dust from the room air drawn into the chassis by the fan tray. If it is damaged, dirty, or
clogged with dust, they must be replaced with a new air filter. Failure to replace a compromised air filter can
result in insufficient air circulation through the chassis and temperature-related environmental alarms.
Never operate the Cisco NCS 4009 chassis without an air filter. Operating a Cisco NCS 4009 chassis
Caution
without a filter for an extended time can result in damage to the chassis hardware.
First inspection of the air filter must be performed six months after the system installation. Air filters must
Note
be inspected every three months after the initial six month inspection and replaced if found to be dirty.
Inspection of the air filter must be performed as specified in your local site practices. Spare filters must
be kept in stock. The filter is sold in packs of 5 (Cisco PID NCS4K-FTF=).
Prerequisites
Before performing this task, open the front door, if installed.
Required Tools and Equipment
• ESD-preventive wrist strap
• Number 1 Phillips screwdriver
• Air filter (Cisco PID NCS4K-FTF=)
Steps
To remove the air filter:
Removing and Replacing the Air Filter
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