Juniper EX4300

CHAPTER 16
Replacing Power Supply
•
Installing an AC Power Supply in an EX4300 Switch on page 233
•
Removing an AC Power Supply from an EX4300 Switch on page 235
•
Installing a DC Power Supply in an EX4300 Switch on page 236
•
Removing a DC Power Supply from an EX4300 Switch on page 238
Installing an AC Power Supply in an EX4300 Switch
The AC power supply in EX4300 switches 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:
•
AC and DC power supplies in the same chassis
•
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT
(AFO)) in the same chassis.
•
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO))
in the same chassis.
•
Power supplies and fan modules with different airflow labels (AIR IN (AFI)
and AIR OUT (AFO)) in the same chassis.
Before you install an AC power supply in the switch:
•
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
“Prevention of Electrostatic Discharge Damage” on page 313.
Ensure that you have the following parts and tools available to install the power supply:
•
ESD grounding strap
•
Phillips (+) screwdriver, number 2
233Copyright © 2017, Juniper Networks, Inc.