Installing A Fan Module In A Qfx5100 Device - Juniper QFX5110 Series Hardware Documentation

Figure 151: Removing a QFX-PFA-4Q Expansion Module from a QFX5100-24Q-AA Device
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Field-Replaceable Units in a QFX5100 Device
QFX5100 Device Hardware Overview | 22

Installing a Fan Module in a QFX5100 Device

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.
CAUTION:
removal to prevent chassis overheating. Before removing the fan module, ensure you
have a replacement fan module at hand.
NOTE: 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.
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
page 242).
Replace a failed fan module with a new fan module within 1 minute of
"Prevention of Electrostatic Discharge Damage" on
440