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6-5
Power Supply
The 7044A-82R has a triple redundant 760 watt redundant cooling power
supply that consists of three 380W power modules. All three modules are
active and share the load of the system (up to 760W max.). If any of the
three modules fail, the other two will continue to provide up to 760W of power
and allow the system to continue running without interruption.
The power supply modules have an auto-switching capability that enable
them to automatically sense and operate with 100 or 220 volt inputs. The
power modules are PFC (Power Factor Correction) compliant.
Power Supply Failure
If a power supply module fails, an LED in the control panel as well as
one on the back of the failed power module will illuminate to notify you of
a power failure.
Replacing the Power Supply
1.
Accessing the power supply:
You do not need to power down the system to replace a power module
on the 7044A-82R. Power supply modules can be removed from the back of
the chassis; access to the inside is unnecessary.
2.
Removing the power supply:
First, unplug the power cord from the failed power supply module. Then
press the locking tab on the module and pull the unit completely out.
3.
Installing a new power supply module:
Replace the failed unit with another unit having the exact same part
number (PWS-0050M). Gently but firmly push the new unit all the way into
the open bay. Secure it to the chassis using the locking tab. Finish by
replacing the chassis left/top cover and then plugging the power cord back
into the new module you just added.
Chapter 6: Advanced Chassis Setup
6-9
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