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.
2 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.
Step
Slide the PSU into the PSU bay until the PSU is fully seated and the release latch snaps into place.
Figure 121. Installing a power supply unit
Next step
1 Connect the power cable to the PSU, and plug the cable into a power outlet.
CAUTION
: When connecting the power cable to the PSU, secure the cable to the PSU with the strap provided on the
handle.
NOTE: When installing, hot swapping, or hot adding a new PSU, wait for 15 seconds for the system to recognize the
PSU and determine its status. The PSU redundancy may not occur until discovery is complete. Wait until the new PSU
is discovered and enabled before you remove the other PSU. The PSU status indicator turns green to signify that the
PSU is functioning properly.
Removing a DC power supply unit
Prerequisites
WARNING
: For equipment using –(48–60) V DC power supply units (PSUs), a qualied electrician must perform all connections
to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electrical wiring
must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow all safety instructions that came with the product.
146 Installing and removing system components
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