Owners Manual

Removing a power supply unit
The procedure for removing AC and DC PSUs is identical.
Prerequisites
CAUTION: The system needs one power supply unit (PSU) for normal operation. On power-redundant system,
remove and replace only one PSU at a time in a system that is powered on.
1. Follow the safety guidelines listed in Safety instructions on page 56.
2. Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable
from the strap on the PSU handle.
3. Unlatch and lift the optional cable management arm if it interferes with the PSU removal.
For information about the cable management arm, see the system’s rack documentation at Dell.com/XCSeriesmanuals.
Steps
Press the release latch and slide the PSU out of the system by using the PSU handle.
Figure 70. Removing a power supply unit
Next steps
Install the PSU or the PSU blank.
Installing a power supply unit
The procedure for installing AC and DC PSUs is identical.
Prerequisites
1. Follow the safety guidelines listed in Safety instructions on page 56.
2. For systems that support redundant PSU, ensure that both the PSUs are of the same type and have the same maximum
output power.
NOTE: The maximum output power (shown in watts) is listed on the PSU label.
Steps
Slide the PSU into the system until the PSU is fully seated and the release latch snaps into place.
Installing and removing system components
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