Juniper QFX10002 Hardware Manual page 55

46
Fan Module Status | 48
The cooling system in a QFX10002 consists of three 80-W fan modules in a fan tray and two counter-
rotating fans housed in each of the power supplies.
The QFX10002 brings air into the vents in the port panel and exhausts warmed air through the field-
airflow out or port-to-FRU airflow.
replaceable units (FRU) panel. This type of airflow is known as
This topic describes:
Fan Modules
The fan modules in a QFX10002 are hot-removable and hot-insertable FRUs designed for port-to-FRU
airflow. The fan modules numbered 0 through 2 are installed in the fan tray located next to the power
supplies. Each fan module slot has a fan icon next to it.
Figure 25 on page 46 shows the 2-U fan module for the QFX10002 models.
Figure 25: Fan Module for the QFX10002
You remove and replace a fan module from the FRU end of the chassis. The switch continues to operate
for a limited period of time (30 seconds) during the replacement of the fan module without thermal
shutdown.
NOTE: All fan modules must be installed for optimal operation of the switch.
Table 17 on page 47 lists the fan module details.