Remove the busbar from the rack

Follow instructions in this section to remove the busbar from the rack. The procedure must be executed by a trained technician.

About this task

S036

18 - 32 kg (39 - 70 lb)	32 - 55 kg (70 - 121 lb)

CAUTION

Use safe practices when lifting.

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.

CAUTION

Electrical current from power, telephone, and communication cables is hazardous. To avoid a shock hazard:

• Connect all power cords to a properly wired and grounded electrical outlet/source.
• Connect any equipment that will be attached to this product to properly wired outlets/sources.
• When possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• The device 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.

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.

Note

Ensure the following tools are available to perform the replacement:

• Torque screwdriver
• Phillips #2 bit
• Torx T25 bit

Procedure

1. Make preparation for this task.
   1. Disconnect all power sources to avoid electric shock.
      1. Press and hold the latches on both sides of the power whip.
      2. Pull out the power whip.

      Note

      Removing the power whip may require two people to ensure sufficient force is applied for a proper disconnection.

      Figure 1. Removing the power whip
      
      
   2. Remove all the compute trays, management switches, NVLink switch trays, and power shelves. See Remove a compute tray from the rack, Remove a management switch from the rack, Remove an NVLink switch tray from the rack, and Remove a power shelf from the rack.
2. Remove the cable cartridge support bracket.
   1. Follow the sequence below to loosen the fifty-four screws.
      Figure 2. Loosening the screws
      
      
   2. Remove the support bracket from the rack.
      Figure 3. Removing the cable cartridge support bracket
      
      
3. Remove the busbar bracket.
   1. Loosen the twelve screws that secure the bracket.
      Figure 4. Loosening the screws
      
      
   2. Remove the bracket from the rack.
      Figure 5. Removing the busbar bracket
      
      
4. Remove the busbar.
   1. Loosen the five screws that secure the busbar.
   2. Slightly lift the busbar and pivot the bottom outward to disengage it from the rack.
   3. Carefully slide the busbar downward to remove it completely from the rack.
   Figure 6. Removing the busbar