Installing Power Modules | 25
Installing a DC PEM
Figure 5-3. Removing the PEM Safety Cover
Step Task
1 Turn the remote power source (the circuit breaker panel) to the OFF position.
2 Turn the over current protector (located on the PEM front panel) to the OFF position.
3 Loosen the PEM safety cover retaining screw and remove the cover
(Figure 5-3)
.
Step Task (continued)
4 Slide the PEM into power slot 0 or 1
(Figure 5-2)
.
CAUTION: Fill all four power supply slots with power supplies or filler blanks before tightening the power
supply screws. Doing this ensures that each power supply is aligned correctly. Ensure power supplies are properly
aligned prior to engaging the captive screws. Doing this will reduce the likelihood of damaging screws or chassis. It
may be necessary to manually align the power supplies prior to tightening.
If you are only installing one PEM, replace the empty slot with two blank panels. (CC-E300-BLNK-PWR.)
5 Start the two captive screws on each power supply by hand before tightening them all.
CAUTION: Tighten the screws with a #2 Phillips screwdriver. Use no more than five inch-pounds of torque
(light torque with a manual screwdriver). Use of power drivers can damage screws or chassis.
CAUTION -
Tur
n off
power source cir
cuit
breaker before acc
essing terminals.
ACHTUNG
-
Ver
jeder Wartung Hauptschalter
Always replace s
afety cover after s
ervicing
Do not unplug while ene
rgized.
CAUTION
-
Unit may have more than one power
source connection. Remove all supply connections
749-00752-0
0
fn00118ch
MAKE GROUND CONNECTION FIRST
CAUTION - Use copper
conductors o
nly
Pwr In
OK
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