Clearance Requirements; Cooling And Airflow Requirements - Juniper PTX10008 Quick Start Manual

Clearance Requirements

Cooling and Airflow Requirements

Copyright © 2017, Juniper Networks, Inc.
For the cooling system to function properly, the airflow around the chassis must be
unrestricted. You must allow sufficient clearance around the installed chassis for cooling
and maintenance (see Figure 1 on page
Figure 1: Clearance Requirements for Airflow and Hardware Maintenance
for a PTX10008
If you are mounting a PTX10008 in a rack with other equipment, ensure that the exhaust
from other equipment does not blow into the intake vents of the chassis.
The cooling system in a PTX10008 chassis consists of dual fan trays and dual fan tray
controllers. There is no air filter in a PTX10008.
The air intake to cool the chassis is located on the port (line card) side of the chassis. Air
flows into the chassis from the ports in the control boards and line cards, through the
switch interface boards (SIBs), and exits from the fan trays and the power supplies. This
airflow is called port-to-FRU cooling or airflow out (AFO). See
3).
Figure 2 on page
Clearance Requirements
4.
3