22 | Installing Power Modules
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Installing an AC Power Supply
To install an AC power supply:
NOTE: If there is a failure in the AC Power Supply, it must be replaced. Power modules are not field
serviceable.
Installing DC Power Entry Modules
The E300 supports a minimum of one DC PEM. You must have only one type of power module in the
chassis; you cannot install a mixture of power modules. For redundant power, install two DC PEMs. To
comply with safety agency and emission requirements, a blank cover must be inserted into any unused
power slot.
Step Task
1 Toggle the Standby Switch of the power supply to the standby position, as shown in the
image here.
NOTE: If the E300 is already operating, you can insert a new power supply without
shutting down the E300.
2 Slide the power supply into any open power supply slot. See
Figure 5-1
for correct orientation.
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.
3 Start the two captive screws of 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.
4 Plug the AC power cord into the AC power inlet in the face of the power supply.
5 Plug the AC power cord into an AC power outlet.
6 Toggle the standby switch of the power supply to the On position.
l
O
l
Standby position
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