Removing A Ptx5000 High Capacity Dc Pdu - Juniper PTX5000 Hardware Manual

Removing a PTX5000 High Capacity DC PDU

Copyright © 2017, Juniper Networks, Inc.
The PTX5000 has two redundant, load-sharing PDUs. Each PDU is hot-insertable and
hot-removable. The High Capacity DC PDU weighs 64.5 lb (29.3 kg) without PSMs.
To remove a High Capacity DC PDU:
Switch off the customer-site circuit breakers to the PDU being removed.
1.
Move the power switch to the standby ( ) position.
2.
NOTE: After powering off a PDU, you must wait at least 60 seconds before
turning it back on.
Make sure that the voltage across the DC power source cable leads is 0 V and that
3.
there is no chance that the cables might become active during the removal process.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
4.
the strap to one of the ESD points on the chassis.
In the front of the chassis, remove the PSMs that are installed in he PDU you plan to
5.
replace. See "Replacing a PTX5000 High Capacity DC PSM" on page 308
Remove the power cables from the power terminal block.
6.
CAUTION: Before removing the power input cables, verify that power is
turned off. You can take the help of a licensed electrician to remove the
cable lugs and the DC power input cables connected to the PDU.
Loosen the four captive screws attaching the PDU handle to the PDU and chassis.
7.
Grasp the handle on the PDU faceplate and pull firmly down toward you. Slide the
8.
PDU halfway out of the chassis (see
Chapter 27: Removing and Installing Power System Components
Figure 182 on page 306).
for details.
305