F5 i5000 Series, Platform Manual, Page: 42 / 72

1. Make sure that you have a live power supply unit (PSU) already installed in your system if you want
to hot swap a PSU while the system is running.
2. Be sure that the circuit breaker for the DC mains power source is switched off.
3. Remove the failed DC PSU by squeezing the ejector latch and pulling straight toward you.
Note: After you remove a power supply unit (PSU) from the system, ensure that the replacement PSU
has been unpowered for 30 seconds to ensure that the PSU circuitry is fully discharged before
inserting the replacement PSU into the system.
4. If a connector protective cap is installed on your new PSU, remove it prior to installing the PSU into
your system.
5. Inspect the new PSU, especially the connector area, for any damage that might have occurred during
shipment.
6. Assemble the DC cable by connecting one of the included DC ring terminals to one end of each of
your 12 AWG copper cables.
7. Remove the terminal cover.
8. Use a screwdriver to remove the screws from the DC power terminals.
9. Connect the ring terminal for the positive (+) DC wire (typically red) to the left terminal, and the ring
terminal for the negative (-) DC wire (typically black) to the right terminal.
10. After you have attached the ring terminals to the terminals, secure them using a screwdriver.
Use 13.5 inch-pounds (1.53 Newton-meters) of torque on these screws.
11. If the chassis is not connected to Earth ground, connect the power supply Earth ground terminal to
Earth ground.
12. Verify that the DC power cables are connected to the appropriate terminal.
The red wire should be connected to the terminal labeled positive (+), and the black wire should be
connected to the terminal labeled negative (-).
13. Replace the terminal cover.
Platform Maintenance
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