Installing a hot-swap ac power supply

Use this information to install a hot-swap ac power supply.

The following items describe the type of power supply that the server supports and other information that you must consider when you install a power supply:

To confirm that the server supports the power supply that you are installing, see https://static.lenovo.com/us/en/serverproven/index.shtml.
The server comes standard with one 750-watt or 900-watt hot-swap power supply. The input voltage is 110 V ac or 220 V ac auto-sensing.
Note
You cannot mix 110 V ac and 220 V ac, or 750-watt and 900-watt power supplies in the server, it is not supported.
These power supplies are designed for parallel operation. In the event of a power-supply failure, the redundant power supply continues to power the system. The server supports a maximum of two power supplies.
The server can run fully configured with one power supply. For redundancy support, you must install the second hot-swap power supply.

Note

You cannot mix high-efficiency and non-high-efficiency power supplies in the server.

Statement 5

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.

Statement 8

CAUTION

Never remove the cover on a power supply or any part that has the following 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.

Attention

During normal operation, each power-supply bay must contain either a power supply or power-supply filler for proper cooling.

To replace a hot-swap ac power supply, complete the following steps.

Read the safety information that begins on page Safety and Installation guidelines.
Touch the static-protective package that contains the hot-swap power supply to any unpainted metal surface on the server; then, remove the power supply from the package and place it on a static-protective surface.
If you are installing a hot-swap power supply into an empty bay, remove the power-supply filler panel from the power-supply bay. Meanwhile, if you are replacing a failed hot-swap power supply, remove it from the bay.
Figure 1. Power supply installation
Grasp the handle on the rear of the power supply and slide the power supply forward into the power-supply bay until it clicks. Make sure that the power supply connects firmly into the power-supply connector.
Connect the power cord for the new power supply to the power-cord connector on the power supply.
Route the power cord through the cable retainer clip so that it does not accidentally become disconnected.
Figure 2. Power cord
Connect the power cord to a properly grounded electrical outlet.
Make sure that the ac power LED and the dc power LED on the power supply are lit, indicating that the power supply is operating correctly.
If you are adding a power supply to the server, attach the redundant power information label that comes with this option on the server top cover near the power supplies.
Figure 3. Power information label

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