Internal System Fan Replacement

System fans are field-replaceable units. Should a CPU fan assembly fail, an alarm will be raised by the system. No tools are necessary for fan replacement in Infoblox Advanced Appliance PT-4000 appliances.

Note: The PT-4000 appliance reports all system fans, numbered 1 through 6, as individual units, and each fan may be individually replaced as needed. Each fan is numerically labeled inside the chassis.

System fans are hot-swappable; they can be replaced while the system is on. Infoblox recommends that the system be switched off before replacing a fan unit. To replace a processor fan assembly, do the following:

1. Perform a full system shutdown.
2. Unplug all power cables from the system.
3. Extend or remove the PT-4000 system from the rack.
4. Remove the star screwdriver from the back of the system, and then unscrew the latch (on the top rear of the unit) and gently pull latch to remove the top panel, as shown in Figure 15 and Figure 16 .

Figure 15 Gently pull latch to remove top panel for Infoblox Advanced Appliance PT-4000

5. Slide the top panel off and visually inspect the fans to determine which unit has stopped spinning and must be replaced.

6. Figure 16   shows the four-fan-module configuration. The system fans can be removed from their installation base and replaced. A pair of small handles reside on the top of each fan module, which you grasp with fingertips to pull the unit out of the system. Pay attention to unit alignment and placement before removing from the system.

Figure 16 System fan assembly; pull gently on top of the failed fan unit. Each unit is numbered.

7. Place the new fan in the system. Note that the fans can be installed correctly in only one direction, as shown in Figure 17.

Figure 17 Fan blades point towards rear of chassis for Infoblox Advanced Appliance PT-4000

8. Replace the top lid of the system and replace it in the rack before restoring power.