Juniper ACX6160 Hardware Manual page 24

You remove and replace a fan module from the rear panel of the chassis. The device continues to
operate for a limited period of time (4 minutes) during the replacement of the fan module without
thermal shutdown. Figure 9 on page 16
Figure 9: ACX6160 Fan Module
NOTE: All fan modules must be installed for optimal operation of the device.
Table 8 on page 16 lists the fan information.
Table 8: ACX6160 Fan Module
Fan Module Label on the Fan
Module
ACX6160-FAN- AIR OUT
FRU
Airflow Through the Chassis
In the ACX6160 cooling system, cool air enters through the vents in the front panel and hot air exhausts
through the rear (FRU) panel. This type of airflow is known as
airflow direction on the ACX6160 is airflow out, air comes into the device through the vents in the front
shows the fan module for the ACX6160.
Direction of Airflow in the Fan
Module
Port-to-FRU, that is, air comes in
through vents on the end with ports;
air exhausts out the end with the
fans (also known as front-to-back
airflow).
airflow out or port-to-FRU airflow. The
Power Supply to be
Installed
You must install only
power supplies that have
AIR OUT labels in devices
in which the fan modules
have AIR OUT labels.
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