Cisco ASR 9000 Series
Line Card
Chassis Airow
Chassis Airow
ESD
Compatible Modules
Replacement
Provide unrestricted airow by maintaining adequate clearance at both the inlet and exhaust openings of the chassis and the
power modules. For more details on chassis airow clearance, click here.
Prevent any airow obstruction that may be caused by cables or blocked lters. Manage and route the cables in ideal directions to
prevent such airow obstructions.
Maintenance Best Practices
ESD
While performing any function or replacement on the chassis, ensure that you use an ESD-preventive antistatic wrist strap
(or ankle strap) to avoid damage by static electricity.
Periodically, check the resistance value of the ESD-preventive strap. The measurement should be between 1 and 10 M Ohm.
For more details, click here.
Replacement
Inspect air lters once every 3 months. If there is an increase in temperature, please check the air lters and fans for any
malfunctioning. For troubleshooting, reach out to Cisco TAC and isolate any possible hardware failure.
Replace air lters that are clogged or damaged. Cleaning the air lters is not recommended.
Use only compatible versions of power modules and fan trays for operations. For the product datasheet, click here.
Compatible Modules
During maintenance, to avoid dust accumulation and air leakage that can increase the chassis temperature, do not keep the fan tray
slot empty for a long duration.
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