Dell PowerEdge R940 Installation and Service Manual

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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. 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.
Figure 1. Installing a power supply unit
This image shows installing a power supply unit.

Next steps

  1. If you have unlatched the cable management arm, relatch it. For information about the cable management arm, see the system’s rack documentation at www.dell.com/poweredgemanuals.
  2. 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.
    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.

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