Juniper QFX5200 Hardware Manual page 40

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Figure 16 on page 31 and Figure 17 on page 31 shows the fan modules.
Figure 16: QFX5200-32C and QFX5200-32C-L Fan Modules
Figure 17: QFX5200-48Y Fan Module
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.
The fan modules are available in four product SKUs that have different airflow directions—FRU-to-port
airflow and port-to-FRU airflow On legacy switches or switches with LCDs, this airflow is also called