Juniper MX960 Hardware Manual page 506

MX960 3D Universal Edge Router Hardware Guide
476
Ensure that the voltage across the DC power source cable leads is 0 V and that there
4.
is no chance that the cable leads might become active during installation.
Ensure that the release lever below the empty power supply slot is locked in the
5.
counterclockwise position.
If necessary, pull the spring-loaded locking pin in the release lever away from the
chassis and turn the release lever counterclockwise until it stops. Let go of the locking
pin in the release lever. Ensure that the pin is seated inside the corresponding hole in
the chassis.
Using both hands, slide the power supply straight into the chassis until the power
6.
supply is fully seated in the chassis slot.
The small tab on the metal housing that is controlled by the release lever must be
inside of the corresponding slot at the bottom of the power supply. This tab is used
to pull the power supply down in the chassis slot, prior to removing the power supply.
While firmly pushing the handle on the power supply faceplate with one hand, use
7.
your other hand to pull the spring-loaded locking pin in the release lever away from
the chassis and turn the release lever clockwise until it stops.
Let go of the locking pin in the release lever. Ensure that the pin is seated inside the
8.
corresponding hole in the chassis.
Remove the cover protecting the terminal studs on the faceplate.
9.
Remove the nut and washer from each of the terminal studs.
10.
Secure each power cable lug to the terminal studs, first with the split washer, then
11.
with the nut. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to
each nut. Do not overtighten the nut. (Use a 7/16-in. [11-mm] torque-controlled driver
or socket wrench.)
a. On , attach the positive (+) DC source power cable lug to the
INPUT 0
terminal as shown in
feeds.
b. On attach the negative (–) DC source power cable lug to the
INPUT 0
terminal. Repeat this step for
CAUTION: Ensure that each power cable lug seats flush against the surface
of the terminal block as you are tightening the nuts. Ensure that each nut
is properly threaded onto the terminal stud. The nut should be able to spin
freely with your fingers when it is first placed onto the terminal stud.
Applying installation torque to the nut when improperly threaded may
result in damage to the terminal stud.
Figure 74 on page 237. Repeat this step for
INPUT 1 if using two feeds.if using two feeds.
(return)
RTN
INPUT 1 if using two
(input)
-48V
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