Replacing a power supply unit

Last Updated : Feb 16, 2022 |

About this task

The Branch Gateway provides full redundant, load sharing power supply units (1 + 1). A single power supply unit provides enough power for any Branch Gateway configuration. If you choose to install two power supply units, the units operate in a load sharing mode.

The Branch Gateway supports hot swap of the power supply unit. Even if you have only one PSU unit installed, there is no need to turn off or reset the Branch Gateway when replacing a faulty power unit. You can install the replacement PSU in the second PWR slot, and it becomes the active PSU once you remove the faulty PSU.

Figure : 1. Replacing a power supply unit

Procedure

  1. To remove a power supply unit:
    1. Disconnect the Branch Gateway power cable from the mains socket.
    2. Disconnect the Branch Gateway power cable from the power connector, on the front panel of the power supply unit, at the rear of the Branch Gateway.
    3. Loosen the two captive screws, one on each side of the power supply unit.
    4. Grasp the two side handles and pull the power supply unit out of the slot.
  2. To insert a power supply unit:
    1. Position the power supply unit before the opening and engage both sides of the unit in the interior guides.
    2. Slide the power supply unit slowly into the chassis, maintaining an even pressure to assure that the unit does not become twisted or disengaged from the guides.
    3. Insert and tighten the two captive screws on the front panel.
    4. Connect the power cable to the power connector on the power supply unit.
    5. Plug the power cable into a mains socket.
    6. After turning on, use the show platform power CLI command to ensure everything is OK.

      The upper PSU is referred to as PSU #1 in the CLI, and the lower PSU is PSU #2.