4-52
Catalyst 6500 Series Switches Installation Guide
OL-5781-08
Chapter 4 Removal and Replacement Procedures
Removing and Installing the DC-Input Power Supplies
Figure 4-36
Handling a 4000 W DC-Input Power Supply
Step 6
Tighten the power supply captive installation screw.
Step 7
Remove the two screws that secure the outer terminal block cover. Lift the cover up to detach the cover
tabs from the slots in the power supply. Set the cover and the screws aside. (See
Figure 4-26
.)
Step 8
Remove the two screws that secure the left inner terminal block cover. Lift up on the cover to detach the
cover tab from the slot in the power supply. Set the cover and the screws aside.
Step 9
Remove the one screw that secures the right inner terminal block cover. Lift up on the cover to detach
the cover tab from the slot in the power supply. Set the cover and the screw aside.
Step 10
Remove the two plastic insulators from the plastic bag that shipped with the power supply. Position the
larger plastic insulator (eight holes) over terminal block VE-1/VE-2. Align the holes in plastic with the
terminal block posts. The end flap on the insulator should face away from the DC source cable entry
direction.
Step 11
Position the smaller plastic insulator (four holes) over the four-post terminal block VE-3. Align the holes
in the plastic with the terminal block posts. The end flap on the insulator should face away from the
source DC cable entry direction.
Step 12
Fold the end flaps down on both insulators to cover the open side of the terminal block (opposite side
from cable entry).
Step 13
From the left side of the power supply, connect the power supply ground cable and the source DC cables
to the DC-input wires to the terminal block (see
Figure 4-37
) in this order:
1.
Ground cable lug to the ground terminal posts
2.
Negative (–) source DC cables to terminal posts –VE-1 and –VE-2
3.
Positive (+) source DC cables to terminal posts +VE-1 and +VE-2
Caution
When you tighten the terminal nuts, make sure that they are snug. Do not overtighten them.
Overtightening the terminal nuts can damage the terminal block. The recommended torque values for
tightening the terminal nuts are 15 inch-pounds (1.7 newton-meters) (minimum) and 20 inch-pounds
(2.2 newton-meters) (maximum).
104978
INPUT OK
FAN
OK
OUTPUT
FAIL
I
0
1
3
2
+
VE-1
-VE-1
+
VE-2
-VE-2
+
VE-3
-VE-3