Install and Remove QFX5100 Fan Modules
Installing a Fan Module in a QFX5100 Device
Before you install a fan module in a QFX5100 device, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).
The fan modules in a QFX5100 device are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.
Replace a failed fan module with a new fan module within 1 minute of removal to prevent chassis overheating. Before removing the fan module, ensure you have a replacement fan module at hand.
The fan module provides FRU-to-port or port-to-FRU airflow depending on the switch product SKU you purchase. In legacy switches, or switches with an LCD, this airflow is called front to back and back to front.
To install a fan module in a QFX5100 device (see Figure 1 and Figure 2):


Removing a Fan Module from a QFX5100 Device
Before you remove a fan module from a QFX5100 device, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).
Ensure that you have the following parts and tools available to remove a fan module from a QFX5100 device:
ESD grounding strap
Antistatic bag or an antistatic mat
The fan modules in QFX5100 devices are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.
Replace a failed fan module with a new fan module within 1 minute of removal to prevent chassis overheating. Before removing the fan module, ensure you have a replacement fan module at hand.
To remove a fan module from a QFX5100 device (see Figure 3 and Figure 4):


When a fan module is removed, the CLI message Fan/Blower is Absent is logged in the system log, and the system raises a minor alarm.