Installing a Fan Module in a QFX5200
Before you install a fan module in a QFX5200, ensure that you have taken the necessary precauons to
prevent electrostac discharge (ESD) damage (see "Prevenon of Electrostac Discharge Damage" on
page 194).
The fan modules in a QFX5200 are hot-removable and hot-insertable eld-replaceable units (FRUs): you
can remove and replace them without powering o the switch or disrupng switch funcons.
CAUTION: Replace a failed fan module with a new fan module within 1 minute of
removal to prevent chassis overheang. 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 airow depending on the switch
product SKU you purchase. In legacy switches, or switches with an LCD, this airow is called
front to back and back to front.
To install a fan module in a QFX5200 (see Figure 57 on page 130 and Figure 58 on page 130):
1. Aach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
2. Taking care not to touch the connectors, remove the fan module from its bag.
3. Align the module with the open slot on the management panel of the chassis and slide it in unl it is
fully seated.
CAUTION: Damage can occur if you aempt to install a fan module into a chassis with
a dierent airow direcon. Compare the switch product SKU with the airow marking
on the handle to ensure that you are installing a fan module with the same airow
direcon as the chassis. The fan modules are designed so that they can only be
inserted into the QFX5200 product SKU that supports the same airow type. See
"QFX5200 Cooling System" on page 29 for more informaon.
129
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