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

MX2020 3D Universal Edge Router Hardware Guide
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Replacing MX2020 AC Power Subsystem Components

Replacing an MX2020 Three-Phase Delta AC Power Distribution Module
276
Attach the power cable to the DC power source.
7.
Turn on the dedicated customer site circuit breaker to the PDM.
8.
Verify that the LED on the PDM is lit steadily.
–48V
9.
On each of the DC power input sources, switch the DC circuit breaker to the center
10.
position before moving it to the
NOTE: The circuit breaker may bounce back to the
move the breaker too quickly.
Observe the status LEDs on the PDM faceplate. If the PDM is correctly installed and
functioning normally, the
Preventing Electrostatic Discharge Damage to an MX2020 Router on page 320
MX2020 DC Power Distribution Module Description on page 49
DC Power Cable Specifications for the MX2020 Router on page 360
MX2020 DC Power Electrical Safety Guidelines on page 342
Replacing an MX2020 Three-Phase Delta AC Power Distribution Module on page 276
Replacing an MX2020 Three-Phase Delta AC Power Cord on page 283
Replacing an MX2020 Three-Phase Wye AC Power Distribution Module on page 288
Replacing an MX2020 Three-Phase Wye AC Power Cord on page 296
Replacing an MX2020 AC Power Supply Module on page 301
Removing an MX2020 Three-Phase Delta AC Power Distribution Module on page 276
1.
2. Installing an MX2020 Three-Phase Delta AC Power Distribution Module on page 280
Removing an MX2020 Three-Phase Delta AC Power Distribution Module
Before you remove a three-phase delta AC PDM, be aware of the following:
WARNING: Before performing AC power procedures, ensure that power is
removed from the AC circuit. To ensure that all power is
breaker on the panel board that services the AC circuit, switch the circuit
breaker to the OFF
in the position.
OFF
position.
ON
–48V LEDs light green steadily.
position, and tape the switch handle of the circuit breaker
OFF position if you
, locate the circuit
OFF
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