• Connecting AC Power to a QFX3500 Device on page 265
• Connecting DC Power to a QFX3500 Device on page 267
• Removing a Power Supply from a QFX3500 Device on page 364
Removing a Power Supply from a QFX3500 Device
The power supplies in a QFX3500 device are hot-removable and hot-insertable
field-replaceable units (FRUs): you can remove and replace them without powering off
the device or disrupting device functions.
Before you remove a power supply from a QFX3500 device, ensure that you have taken
the necessary precautions to prevent electrostatic discharge (ESD) damage (see
“Prevention of Electrostatic Discharge Damage” on page 192).
Ensure that you have the following parts and tools available to remove a power supply
from a QFX3500 device:
•
ESD grounding strap
•
Antistatic bag or an antistatic mat
•
Phillips (+) screwdriver, number 2 (DC power supply)
CAUTION: Replace the power supplywith a blank panel or new power supply
within 1 minute of removal to prevent chassis overheating.
To remove a power supply from a QFX3500 device (see Figure 119 on page 365):
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 QFX3500 device, you
need to power off the device before removing the power supply. See
“Powering Off a QFX3500 Device” on page 298.
3. Disconnect power to the device:
•
AC power supply—If the AC power source outlet has a power switch, set it to the
OFF (O) position. If the AC power source outlet does not have a power switch,gently
pull out the male end of the power cord connected to the power source outlet.
•
DC power supply—Switch the circuit breaker on the panel board that services the
DC circuit to the OFF position.
Copyright © 2012, Juniper Networks, Inc.364
QFX3000 Hardware Documentation
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