Juniper QFX5110, Hardware Manual

Page: 131 / 222

Related
Documentation
QFX5110 AC Power Supply on page 33
•
•
QFX5110 Field-Replaceable Units on page 15
•
AC Power Cord Specifications for a QFX Series Device
•
Connecting AC Power to a QFX5110 on page 85
•
Connecting DC Power to a QFX5110 on page 87
Removing a Power Supply from a QFX5110
All QFX5110 switches, except the QFX5110-32Q-CHAS are shipped from the factory with
two power supplies. Each power supply is a hot-removable and hot-insertable
field-replaceable unit (FRU) when the second power supply is installed and running. You
can install replacement power supplies in the two slots next to the fan modules without
powering off the switch or disrupting the switching function.
Before you remove a power supply from a QFX5110, ensure that you have taken the
necessary precautions to prevent electrostatic discharge (ESD) damage (see
“Prevention
of Electrostatic Discharge Damage” on page 182 ).
Ensure that you have the following parts and tools available to remove a power supply
from a QFX5110:
•
ESD grounding strap
• Antistatic bag or an antistatic mat
• Phillips (+) screwdriver, number 2 (DC power supply)
CAUTION: Replace the power supply with a new power supply within 1 minute
of removal to prevent chassis overheating.
To remove a power supply from a QFX5110 (see Figure 44 on page 112 ):
1.
Place the antistatic bag or the antistatic mat on a flat, stable surface.
2.
Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
point on the chassis.
NOTE: If only one power supply is installed in your QFX5110, you need to
power off the switch before removing the power supply. See “Powering
Off a QFX5110” on page 124 .
111 Copyright © 2017, Juniper Networks, Inc.
Chapter 14: Replacing Power Supplies