Replacing An Mx2020 Three-Phase Wye Ac Power Distribution Module; Removing An Mx2020 Three-Phase Wye Ac Power Distribution Module - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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Replacing an MX2020 Three-Phase Wye AC Power Distribution Module

Removing an MX2020 Three-Phase Wye AC Power Distribution Module

518
Switch on the customer site circuit breakers to provide voltage on the AC power cord.
21.
Remove the ESD grounding strap from the approved site ESD grounding point. See
22.
the instructions for your site. Reconnect the strap to one of the ESD points on the
chassis.
Verify that the LED on the PDM faceplate is lit steadily, indicating that the AC terminal
23.
block is receiving power.
Switch the power switch on all the PSMs to the on (
24.
the router components.
Preventing Electrostatic Discharge Damage to an MX2020 Router on page 558
MX2020 Three-Phase Delta AC Power Distribution Module Description on page 86
MX2020 Three-Phase Wye AC Power Distribution Module Description on page 88
MX2020 Three-Phase Delta and Wye AC Power Distribution Module LEDs on page 91
Connecting AC Power to an MX2020 Router with Three-Phase Delta AC Power
Distribution Modules on page 249
Troubleshooting the MX2020 Power Subsystem on page 541
MX2020 AC Power Cord Specifications on page 154
MX2020 Three-Phase Delta AC Power Distribution Module Specifications on page 163
Removing an MX2020 Three-Phase Wye AC Power Distribution Module on page 518
1.
Installing an MX2020 Three-Phase Wye AC Power Distribution Module on page 522
2.
Before you remove a three-phase wye AC PDM, be aware of the following:
WARNING: Before performing AC power procedures, disconnect all power
sources. To ensure that all power is off, locate the circuit breaker on the panel
board that services the AC circuit, switch the circuit breaker to the off position,
and tape the switch handle of the circuit breaker in the off position.
WARNING: To avoid damage and electrical shock, do not touch the power
connectors on the PDM .
CAUTION: To maintain proper cooling and prevent thermal shutdown of the
operating power supply unit, each PDM slot must contain either a PDM or a
) position to provide power to
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