NOTE: You may have to unlatch and lift the optional cable management arm if it interferes withpower supply removal. For information about the cable management arm, see the rackdocumentation of your system.Steps1. Disconnect the power wires from the power source and the connector from the power supply youintend to remove.2. Disconnect the safety ground wire.3. Press the release latch and slide the power supply out of the chassis.Figure 49. Removing and installing a DC power supply1. release latch 2. power supply status indicator3. power supply 4. connector5. power supply handleInstalling a DC power supply unitPrerequisitesWARNING: For equipment using –(48–60) V DC power supplies, a qualified electrician mustperform all connections to DC power and to safety grounds. Do not attempt connecting to DCpower or installing grounds yourself. All electrical wiring must comply with applicable local ornational codes and practices. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow all safety instructions that came with the product.Steps1. Verify that both the power supplies 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.2. If installed, remove the power supply blank.3. Slide the new power supply unit into the chassis until the power supply unit is fully seated and therelease latch snaps into place.112
