Juniper MX2020 Hardware Manual page 144

MX2020 3D Universal Edge Router Hardware Guide
118
Detach the ESD grounding strap from the approved site ESD grounding point, and
3.
connect the strap to one of the ESD points on the chassis.
Switch the power switches on all the PSM faceplates to the off (
4.
Verify that the correct three-phase delta PDMs are installed and secured in the chassis
5.
before connecting power cables.
NOTE: The power cables must be uninstalled and removed from the
three-phase delta PDM before removal of the PDM from the chassis.
Using a number 2 Phillips (+) screwdriver, unscrew the four captive screws located
6.
on the either side of the metal AC wiring compartment (four screws total per PDM).
Remove the metal cover of the metal AC wiring compartment.
7.
Unscrew the retaining nut from the AC power cord.
8.
Place the retaining nut inside the metal wiring compartment.
9.
Put the wires on the AC power cord through the hole of the metal wiring compartment.
10.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring
11.
compartment.
Connect the wires to the AC terminal block on the three-phase delta AC PDM (see
12.
Figure 72 on page 119). Loosen the input terminal or grounding point screw, insert each
wire into the grounding point input terminal, and tighten the screw.
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.
To connect wires to the terminal block that serves six PSMs:
a. Insert the grounding wire into the grounding point labeled
b. Insert the wire into the input terminal labeled
c. Insert the wire into the input terminal labeled
d. Insert the wire into the input terminal labeled
) position.
O
.
GND
A1 .
.
B1
C1 .
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