Prerequisites
Before performing this task, completely power off the entire system. Remove all AC or DC input power
connections.
Do not remove the chassis ground cable unless the chassis is powered off and to be replaced.
Caution
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 Cisco NCS 4016 chassis is shipped with two
air filters installed. The air filters are located in the middle of the chassis behind the plastic grill.
The air filter removes dust from the room air drawn into the chassis by the two fan trays. If they are 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 4016 chassis without an air filter. Operating a Cisco NCS 4016 chassis
without a filter for an extended time can result in damage to the chassis hardware.
Caution
First inspection of the air filter must be performed six months after the system installation. Air filters must
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=).
Note
Prerequisites
Before performing this task, open the front door, if installed.
Required Tools and Equipment
•
ESD-preventive wrist strap
•
Number 1 Phillips screwdriver
•
Air filters (Cisco PID NCS4K-FTF=)
Steps
To remove the air filter:
Hardware Installation Guide for Cisco NCS 4000 Series
112
Removing and Replacing Chassis Components
Removing and Replacing the Air Filter
