Cooling System Components And Descriptions; Mx5, Mx10, Mx40, And Mx80 Cooling System Description; Figure 15: Airflow Through The Mx5, Mx10, Mx40, And Mx80 Routers - Juniper MX10 Hardware Manual

CHAPTER 3
Cooling System Components and
Descriptions

MX5, MX10, MX40, and MX80 Cooling System Description

Copyright © 2017, Juniper Networks, Inc.
MX5, MX10, MX40, and MX80 Cooling System Description on page 19
The cooling system consists of the following components:
Fan tray
Air filter
The cooling system components work together to keep all router components within the
acceptable temperature range (see
router has one fan tray and one air filter that install vertically in the front of the router.
The fan tray contains five fans.
The air intake to cool the chassis is located on the right side of the chassis next to the air
filter. Air is pulled through the air filter toward the fan tray, where it is exhausted out the
left side of the system. The power supplies are self-cooling and are located in the front
of the router to the left of the front panel. The exhaust for the power supplies is located
on the left side of the chassis.

Figure 15: Airflow Through the MX5, MX10, MX40, and MX80 Routers

Front view
airflow
Power supply exhaust
The chassis monitors the temperature of the router components. When the router is
operating normally, the fans function at lower than full speed. If a fan fails or the ambient
temperature rises above a threshold, the speed of the remaining fans is automatically
adjusted to keep the temperature within the acceptable range. If the ambient maximum
temperature specification is exceeded and the system cannot be adequately cooled, the
Figure 15 on page 19 and Figure 16 on page
Fan tray/
air filter
20). The
19