12 1200-Watt DC-Input Power Supply Replacement Instructions
Removing and Replacing a Power Supply
Step 4
Attach and tighten the conduit to the conduit bracket. How this conduit is attached depends
on your site; its attachment is beyond the scope of this documentation.
Step 5
Use the 8-mm nut driver and attach the ground wire to the ground terminal. (See Figure 8.)
Warning
The illustration shows the DC power supply terminal block. Wire the DC power supply
using the appropriate lugs at the wiring end, as illustrated. The proper wiring sequence is ground to
ground, positive to positive (line to L), and negative to negative (neutral to N). Note that the ground
wire should always be connected first and disconnected last. (To see translated versions of this
warning, refer to page 21.)
Step 6
Check the power supply’s wiring and color code to verify that it matches the wiring and
color code at the DC source.
Note
Incorrectly wiring the terminal block could create a shock hazard and could damage the
power supply, power source, and the chassis components.
Step 7
Replace the terminal block cover. (Refer to Figure 4 on page 9.)
Step 8
After the DC power cable leads are reconnected, reconnect the power cable at the power
source.
Step 9
If you are replacing both power supplies, repeat Steps 1 through 5 for the second power
supply.
Figure 8
Removing and Replacing the DC-Input Power Cable
H3034
0
I
OK
OK
FAIL
DC
FAN OUTPUT
Power leads attached
to terminal block
(+) Positive
( - ) Negative
( ) Ground
DC-input
cable (8 AWG)
Captive
installation
screw
DC-input power supply
with the terminal block
cover removed
Conduit
bracket
