Removing An Mx2020 Three-Phase Delta Ac Power Cord; Figure 129: Three-Phase Delta Ac Power Cord - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
284

Removing an MX2020 Three-Phase Delta AC Power Cord

To remove a three-phase delta AC power cord:
Switch off the customer site circuit breakers to the PDM being removed. Make sure
1.
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 installation process.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Switch the power switch on the PSM faceplate to the off (
3.
NOTE: After powering off a PSM, wait at least 60 seconds before turning
it back on.
Remove the ESD grounding strap from the ESD point on the chassis, and attach it to
4.
an approved site ESD grounding point. See the instructions for your site.
Disconnect the AC power cord (see
5.

Figure 129: Three-Phase Delta AC Power Cord

Remove the ESD grounding strap from the approved site ESD grounding point. See
6.
the instructions for your site. Reconnect the strap to one of the ESD points on the
chassis.
Using a number 2 Phillips (+) screwdriver, loosen the four screws on the cover of the
7.
metal wiring compartment that protects the AC terminal block.
Remove the cover of the metal wiring compartment.
8.
Disconnect the wires from the AC terminal block on the three-phase delta AC PDM
9.
(see Figure 130 on page
screws, and remove each wire from the grounding point or input terminal.
Figure 129 on page
285). Loosen each of the input terminals or grounding point
) position.
O
284) from the power source.
Copyright © 2013, Juniper Networks, Inc.