Owners Manual

Removing A DC Power Supply

NOTE: For equipment using –(48–60) V DC power supplies, a qualified 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.

CAUTION: The system requires six power supplies for normal operation. On power-redundant systems, remove and

replace only one power supply at a time in a system that is powered on.

NOTE: Modifying the modular enclosure redundancy policy is recommended to be performed while the modular

enclosure is powered off.

NOTE: The power supply modules have internal fans that provide thermal cooling to these modules. A power supply

module must be replaced if an internal fan failure occurs.

NOTE: You may have to unlatch and lift the optional cable management arm if it interferes with power supply removal.

For information about the cable management arm, see the system’s rack documentation.

1. Disconnect the power wires from the power source and the connector from the power supply you intend to remove.

2. Disconnect the safety ground wire.

3. Press the release latch on the power supply and slide the power supply away from the chassis.

Figure 43. Removing and Installing a DC Power Supply

connector 2. DC power supply

3. release latch 4. power supply handle

Installing Enclosure Components 69