Replacing Cooling System Component; Installing A Fan Module In An Ex4300 Switch; Chapter 15 Replacing Cooling System Component - Juniper EX4300 Hardware Manual

CHAPTER 15

Replacing Cooling System Component

Installing a Fan Module in an EX4300 Switch

Copyright © 2017, Juniper Networks, Inc.
Installing a Fan Module in an EX4300 Switch on page 229
Removing a Fan Module from an EX4300 Switch on page 231
Each fan module is a hot-removable and hot-insertable field-replaceable unit (FRU)
installed in the rear panel of the switch: You can remove and replace it without powering
off the switch or disrupting switch functions.
CAUTION: Do not mix:
Fan modules with different airflow labels (
in the same chassis.
Power supplies with different airflow labels (
) in the same chassis.
(AFO)
Power supplies and fan modules with different airflow labels (
and
AIR OUT (AFO)
AC and DC power supplies in the same chassis.
Before you install a fan module in the switch:
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
"Prevention of Electrostatic Discharge Damage" on page
Ensure that you have the following parts and tools available to install a fan module in
the switch chassis:
ESD grounding strap
Phillips (+) screwdriver, number 2
AIR IN (AFI)
) in the same chassis.
and
AIR OUT (AFO)
AIR IN (AFI) and AIR OUT
AIR IN (AFI)
313.
)
229