Dell PowerEdge R940 EMC Installation and Service Manual - Page 146

Installing a power supply unit

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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 www.dell.com/poweredgemanuals. Steps Press the orange release latch and slide the PSU out of the system by using the PSU handle. Figure 96. 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 65. 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. 146 Installing and removing system components

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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
www.dell.com/poweredgemanuals
.
Steps
Press the orange release latch and slide the PSU out of the system by using the PSU handle.
Figure 96. 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 65.
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.
146
Installing and removing system components