Replacing a power supply unit for an expansion enclosure

You can replace either of the two 580 watt hot-swap redundant power supplies in the expansion enclosure. These redundant power supplies operate in parallel, one continuing to power the canister if the other fails.

DANGER
When working on or around the system, observe the following precautions:

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

  • If Lenovo supplied a power cord(s), connect power to this unit only with the Lenovo provided power cord. Do not use the Lenovo provided power cord for any other product.
  • Do not open or service any power supply assembly.
  • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.
  • The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords.
  • Connect all power cords to a properly wired and grounded electrical outlet. Ensure that the outlet supplies proper voltage and phase rotation according to the system rating plate.
  • Connect any equipment that will be attached to this product to properly wired outlets.
  • 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.
  • Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.
  • Connect and disconnect cables as described in the following procedures when installing, moving, or opening covers on this product or attached devices.
    To disconnect:
    1. Turn off everything (unless instructed otherwise).
    2. Remove the power cords from the outlets.
    3. Remove the signal cables from the connectors.
    4. Remove all cables from the devices.
    To connect:
    1. Turn off everything (unless instructed otherwise).
    2. Attach all cables to the devices.
    3. Attach the signal cables to the connectors.
    4. Attach the power cords to the outlets.
    5. Turn on the devices.
  • Sharp edges, corners and joints might be present in and around the system. Use care when handling equipment to avoid cuts, scrapes and pinching.
Attention: Even though many of these components are hot-swappable, they are intended to be used only when your system is not active (no I/O operations). If your system is powered on and processing I/O operations, go to the management GUI and follow the fix procedures. Initiating the replacement actions without the assistance of the fix procedures can result in loss of data or loss of access to data.
Attention: A powered-on enclosure must not have a power supply removed for more than five minutes because the cooling does not function correctly with an empty slot. Ensure that you have read and understood all these instructions and have the replacement available, and unpacked, before you remove the existing power supply.

Even though many of these components are hot-swappable, they are intended to be used only when your system is not active (no I/O operations). If your system is powered on and processing I/O operations, go to the management GUI and follow the fix procedures. Initiating the replacement actions without the assistance of the fix procedures can result in loss of data or loss of access to data.

Be careful when you are replacing the hardware components that are located in the back of the system that you do not inadvertently disturb or remove any cables that you are not instructed to remove.

Ensure that you are aware of the procedures for handling static-sensitive devices before you replace the power supply.

To replace the power supply unit in an expansion enclosure, perform the following steps:

  1. Read the safety information to which Preparing to remove and replace parts refers.
  2. Examine the Identify LED that is lit on the front of the enclosure to identify the correct enclosure.
  3. Turn off the power to the power supply unit using the switch at the back of the unit.
  4. Disconnect the cable retention bracket and the power cord from the power supply that you are replacing.
  5. Remove the power supply unit. Record the orientation of the power supply unit. Power supply unit 1 is top side up, and power supply unit 2 is inverted.
    1. Depress the black locking catch from the side with the colored sticker as shown in Figure 1.
      Figure 1. Directions for lifting the handle on the power supply unit
      This figure shows you how to lift the handle on the power supply unit.
    2. Grip the handle to pull the power supply out of the enclosure as shown in Figure 2.
      Figure 2. Using the handle to remove a power supply unit
      This figure shows how you lift the handle to remove a power supply unit.
  6. Insert the replacement power supply unit into the enclosure with the handle pointing towards the center of the enclosure. Insert the unit in the same orientation as the one that you removed.
  7. Push the power supply unit back into the enclosure until the handle starts to move.
  8. Finish inserting the power supply unit in the enclosure by closing the handle until the locking catch clicks into place.
  9. Reattach the power cable and cable retention bracket.
  10. Turn on the power switch to the power supply unit.
If required, return the power supply. Follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.
Parent topic: Replacing a power supply unit for an expansion enclosure