Figure 208: Installing the Side Power Supply Filter
g004965
Air filterAir filter bracket
Related
Documentation
T640 Three-Phase Delta and Wye AC Power Supply Description on page 106•
• T640 Three-Phase Delta and Wye AC Power Supply LEDs on page 109
• Powering Off the T640 Router on page 248
• Maintaining the T640 Power Supplies on page 456
• T640 Preventing Electrostatic Discharge Damage on page 506
• General Safety Guidelines for Juniper Networks Devices on page 503
Replacing a T640 Three-Phase Delta AC Power Supply
The T640 router has either one nonredundant power supply or two redundant,
load-sharing power supplies. Each redundant power supply is hot-insertable and
hot-removable. When a redundant power supply is powered down or removed, the other
power supply automatically assumes the entire electrical load for the router. If you have
only one power supply, you must power off the system before removing the power supply.
1.
Removing a T640 Three-Phase Delta AC Power Supply on page 396
2.
Installing a T640 Three-Phase Delta AC Power Supply on page 400
Removing a T640 Three-Phase Delta AC Power Supply
To remove a three-phase delta AC power supply:
1. Switch off the customer site circuit breakers to the power supply being removed. Make
sure that the voltage across the AC power source cord is 0 V and that there is no
chance that the cord might become active during the removal process.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to one of the ESD points on the chassis.
Copyright © 2017, Juniper Networks, Inc.396
T640 Core Router Hardware Guide
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