Replacing Cooling System Components; Installing A Fan Module In A Qfx5200; Chapter 13 Replacing Cooling System Components - Juniper QFX5200 Hardware Manual

CHAPTER 13

Replacing Cooling System Components

Installing a Fan Module in a QFX5200

Copyright © 2017, Juniper Networks, Inc.
Installing a Fan Module in a QFX5200 on page 81
Removing a Fan Module from a QFX5200 on page 82
The fan modules in a QFX5200 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: 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.
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 QFX5200, ensure that you have taken the necessary
precautions to prevent electrostatic discharge (ESD) damage (see
Electrostatic Discharge Damage" on page
To install a fan module in a QFX5200 (see
Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
1.
point on the chassis.
Taking care not to touch the connectors, remove the fan module from its bag.
2.
Align the module with the open slot on the management panel of the chassis and
3.
slide it in until it is fully seated.
CAUTION: Damage can occur if you attempt to install a fan module into
a chassis with a different airflow direction. Compare the switch product
SKU with the airflow marking on the handle to ensure that you are installing
"Prevention of
156).
Figure 30 on page 82):
81