Figure 219: Disconnecting The Ac Power Cord From A Three-Phase Wye Ac Power - Juniper T640 Hardware Manual

Copyright © 2017, Juniper Networks, Inc.
Using a number 2 Phillips (+) screwdriver, unscrew the two screws on the metal cover
7.
protecting the AC terminal block.
Disconnect the wires from the AC terminal block and grounding point on the
8.
three-phase wye AC power supply
remove each wire from the grounding point or input terminal.
NOTE: The terminal connections have either slotted screws or hex screws.
Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in
(4-mm) Allen wrench for the 5/16-in hex screws.
Remove the wire labeled
a.
Remove the wire labeled
b.
Remove the wire labeled
c.
Remove the wire labeled
d.
Remove the wire labeled
e.
Figure 219: Disconnecting the AC Power Cord from a Three-Phase Wye
AC Power Supply
Loosen the plastic cable tie fastening the AC power cord to the power supply.
9.
Loosen and remove the retaining nut from the AC power cord.
10.
Pull the AC power cord out of the metal wiring compartment.
11.
Carefully move the AC power cable out of the way.
12.
Loosen the captive screws on the lower corners of the power supply faceplate
13.
completely.
Chapter 29: Replacing Power System Components
(Figure 219 on page
from the input terminal
N N
from the input terminal.
L3 L3
from the input terminal.
L2 L2
from the input terminal.
L1 L1
from the grounding point labeled
GND
L1 L2 L3 N
411), loosen each screw, and
.
GND
411