Install a hot-swap power supply unit

Follow instructions in this section to install a hot-swap power supply unit.

S002

CAUTION

The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

S029

DANGER

danger

For -48V dc power supply, electrical current from power cords is hazardous.

To avoid a shock hazard:

• To connect or disconnect -48V dc power cords when you need to remove/install redundancy power supply unit(s).

To Connect:

To Disconnect:

Turn OFF subject dc power source(s) and equipment(s) that are attached to this product. Install the power supply unit(s) into the system housing. Attach dc power cord(s) to the product. Ensure correct polarity of -48 V dc connections: RTN is + and -Vin (typical -48 V) dc is -. Earth ground should be connected very well. Connect dc power cord(s) to subject power source(s). Turn ON all the power source(s).

Disconnect or turn off the subject dc power source(s) (at the breaker panel) before removing the power supply unit(s). Remove the subject dc cord(s) and make sure the wire terminal of power cord(s) is insulated. Unplug the subject power supply unit(s) from the system housing.

S035

CAUTION

Never remove the cover on a power supply or any part that has this label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

About this task

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.
• Touch the static-protective package that contains the component to any unpainted metal surface on the server; then, remove it from the package and place it on a static-protective surface.

Procedure

1. Make preparation for the task.
   1. Make sure the power supply unit to be installed is of the same wattage as the installed ones. Otherwise, complete the following steps:
      1. Turn off the server and peripheral devices.
      2. Disconnect the power cords and all external cables.
      3. Remove all the installed power supply units.
      4. Make sure all the power supply units to be installed are of the same wattage. Do not mix power supply units of different wattages in the same unit of server.
   2. If more than one units are to be installed, start with the lowest available power supply bay.
2. If there is a power-supply-unit filler installed, remove it.
   Figure 1. Removing the power-supply-unit filler
   

   

   
   
   1. Pinch the latches to unlock the power-supply-unit filler.
   2. Pull out the filler.
3. Make sure the label on the power supply is facing up; then, grasp the handle and slide it into the power supply bay until it clicks into place.
   Figure 2. Power supply unit installation

   Note

   • Power supply units in the chassis must have the same wattage, vendor, and part number (or alternate part number).

   • PSU with a release tab is a hot-swap PSU. The color of the release tab does not affect the serviceability of the PSU.

   
   
   
4. Connect the power supply unit to a properly grounded electrical outlet.

   • For 240 V DC power supply units:

     1. Turn off the server.

     2. Connect one end of the power cord to the power connector on the power supply unit.

     3. Connect the other end of the power cord to a properly grounded electrical outlet.

   • For AC power supply units:

     1. Connect one end of the power cord to the power connector on the power supply unit.

     2. Connect the other end of the power cord to a properly grounded electrical outlet.

   • For –48V DC power supply units:

     1. Use a slotted screwdriver to loosen three captive screws on the power supply terminal block.

     2. Check the type label on the power supply block and each power cord.

        Type	PSU terminal block	Power cord
        Input		-Vin
        Ground		GND
        Input		RTN

     3. Face the groove side of each power cord pin upwards, and then plug the pins into corresponding holes on the power block. Use the table above for guidance to ensure that the pins find correct slots.

     4. Tighten the captive screws on the power block. Ensure that the screws and cord pins are secured in place and no bare metal parts are shown.

     5. Connect the other end of the cables to a properly grounded electrical outlet. Ensure that the cable ends find correct outlets.

5. Make sure the power supply unit handle is perpendicular to the power supply unit; then, tie the power cord to the handle with the pre-attached strap as shown below.
   Figure 3. Routing and tying power cord