May 2002
Document Number: 78-11694-02
Connecting a DC Power Cable
Before you install a DC power cable, refer to the DC power supply safety warnings listed on the previous page as well as
the warnings in the
Content Services Switch Getting Started
Guide
.
To connect the CSS DC power supply to a power source:
1.
Locate the DC terminal block on the front of the chassis as shown below for the CSS 11800.
2.
Using a flat-head screwdriver, loosen the captive screws on the three DC connectors (labeled from left to right,
+,
–
,
and ,
respectively)
.
Warning
3.
Install the wires into the appropriate connector. Make sure that the uninsulated part of each wire is 9mm (0.35 in.) in
length. When installing the wires, always connect the ground wire first. When disconnecting the wires, always
disconnect the ground wire last.
The proper power cable wiring between the CSS 11800 and DC power source is, as follows:
4.
Tighten the captive screws to 5 to 7 inch-pounds (0.6 to 0.8 Nm) of torque to secure the wires in the connectors.
Ensure the wires are held firmly in place.
Removing a Power Supply
To remove a power supply:
1.
Disconnect power to the CSS.
2.
Loosen the captive panel fasteners on the power supply front panel.
3.
Grasp the power supply handle and carefully pull the power supply out of the chassis.
Before installing a wire, ensure that the polarity of the DC connections is correct. Reversed polarity can cause damage
to the DC power supply and can create a dangerous shock hazard.
CSS 11800
DC Power Source
(Ground)
(Ground)
+
+
–
–
0.35”
(9mm)
PS1
PS2
PS1 DC
Terminal Block
PS2 DC
Terminal Block
+
–