F5 BIG-IP 3900, Manual

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Installing a DC power supply
You will need the following tools to install the DC power supply:
• Wire stripping tool
• Small slotted screwdriver
• Two 14-16 AWG copper wires long enough to reach from the platform to the DC power source
In the event of a power supply failure, you can replace a DC power supply in the system.
1. Review the DC power supply label and determine the correct wire size for your installation.
2. Use the wire stripping tool to remove 3/8 inch (0.95 cm) of insulation.
Important: Be sure to remove the appropriate amount of insulation from each wire. If you remove too much
insulation, exposed wire protruding from the terminal block can create an electrical hazard. If you do not remove
enough insulation, the wire may not make proper contact with the terminal.
3. Using a small slotted screwdriver, press the spring-loaded mechanism above the openings in the terminal block to
open the terminal connectors and then insert each exposed wire into the appropriate opening.
4. Connect the chassis ground wire to the middle terminal in the terminal block.
This step may be optional with some DC power sources.
5. Connect the negative DC power wire to the 3 terminal on the terminal block.
6. Connect the positive DC wire to the 1 terminal on the terminal block.
7. Make sure that the power from the DC power source is off.
8. Ensure that the terminal block is not connected to the power supply before adding it to the unit.
9. Remove the AC power supply, if it is installed.
10. Slide the DC power supply into the power supply slot and tighten the screw completely.
11. Connect the terminal block into the DC power supply.
12. Turn on the DC power source.
If the system does not boot after you turn on the DC power source, press the Check button on the LCD to begin
booting the system.
About the fan tray
The BIG-IP
®
3900 platform has a removable fan tray that is designed to maintain airflow throughout the chassis. You
can change or replace the fan tray as part of the routine maintenance of the unit, or in the event of a fan failure. The fans
in the fan tray run constantly while the unit is on. Over time, the fans can wear out, requiring you to replace the fan tray.
Caution: This product is sensitive to electrostatic discharge (ESD). We recommend that when you install or
maintain the unit, you use proper ESD grounding procedures and equipment.
28 | Platform Guide: 3900