Bull Novascale R423-E2, Installation And User Manual, Page: 80 / 146

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ale R423-E2 Installation and User's Guide
6-5 Power Supply
The NovaScale R423-E2 has a 700 watt redundant power supply consisting of two
power modules. Each power supply module has an auto-switching capability, which
enables it to automatically sense and operate at a 100V - 240V input voltage.
Power Supply Failure
If either of the two power supply modules fail, the other module will take the full
load and allow the system to continue operation without interruption. The PWR Fail
LED will illuminate and remain on until the failed unit has been replaced. Replace-
ment units can be ordered directly from Bull support. The power supply units have
a hot-swap capability, meaning you can replace the failed unit without powering
down the system.
Removing/Replacing the Power Supply
You do not need to shut down the system to replace a power supply unit. The backup
power supply module will keep the system up and running while you replace the
failed hot-swap unit. Replace with the same model, which can be ordered directly
from Bull Support.
Removing the power supply
First unplug the power cord from the failed power supply module. 1.
Depress the locking tab on the power supply module. 2.
Use the handle to pull it straight out with the rounded handle. 3.
Installing a new power supply
Replace the failed hot-swap unit with another identical power supply unit. 1.
Push the new power supply unit into the power bay until you hear a click. 2.
Secure the locking tab on the unit. 3.
Finish by plugging the AC power cord back into the unit. 4.