To install a hot-swap dc power supply, complete the following steps.
Only trained service personnel other than Lenovo service technicians are authorized to install and remove the -48 volt dc power supply, and make the connections to and disconnections from the -48 volt dc power source. Lenovo service technicians are not certified or authorized to install or remove the -48 volt power cable. The customer is responsible for ensuring that only trained service personnel install or remove the -48 volt power cable.
- Read the safety information that begins on 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.
- Turn off the circuit breaker for the dc power source to which the new power supply will be connected. Disconnect the power cord from the dc power source.
- Attach the dc power cable to the new power supply.
Figure 1. DC power supply rear view
- If you are installing a hot-swap power supply into an empty bay, remove the power-supply filler from the power-supply bay.
Figure 2. 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.
- Route the power cord through the handle and cable tie if any, so that it does not accidentally become unplugged.
- Connect the other ends of the dc power cable to the dc power source. Cut the wires to the correct length, but do not cut them shorter than 150 mm (6 inch). If the power source requires ring terminals, you must use a crimping tool to install the ring terminals to the power cord wires. The ring terminals must be UL approved and must accommodate the wires that are described in Regulations. The minimum nominal thread diameter of a pillar or stud type of terminal must be 4 mm; for a screw type of terminal the diameter must be 5.0 mm.
- Turn on the circuit breaker for the dc power source to which the new power supply is connected.
- Make sure that the green power LEDs on the power supply are lit, indicating that the power supply is operating correctly.
- If you are replacing a power supply with one of a different wattage in the server, apply the new power information label provided over the existing power information label on the server. Power supplies in the server must be with the same power rating or wattage to ensure that the server will operate correctly.
Figure 3. Power information label
- If you are adding a power supply to the server, attach the redundant power information label that comes with this option on the server cover near the power supplies.
Figure 4. Redundant power information label