HP ProLiant ML570 G4 Server - Manual (Page 64)

Hardware options installation 64
2. Remove the access panel (on page 27 ).
3. Install fans 1, 3 and 5.
NOTE: Any hot-plug fan provided in the redundant hot-plug fan cage option kit can be installed in any of
the hot-plug fan slots. Fans are keyed to fit only one way in the slot.
4. Observe the LED on each installed fan to be sure it is green.
5. Observe the internal system health LED on the front panel to be sure it is green (" Front panel LEDs
and buttons " on page 8 ).
6. Install the access panel. (" Install the access panel " on page 27 )
7. Do one of the following:
— Install and lock the bezel.
— Slide the server back into the rack.
NOTE: If the front panel internal system health LED is not green after you install hot-plug fans, reseat the hot-
plug fan or refer to the troubleshooting section.
Replacing hot-plug fans
IMPORTANT: Remove and replace one fan at a time. If the system detects two fan failures while in full
redundant mode, the server will shut down to avoid thermal damage.
When all redundant fans are installed, individual fans can be hot-swapped at any time.
1. Do one of the following:
— Unlock and remove the bezel ("
Unlock and remove the tower bezel " on page 25 ).
— Extend the server from the rack (on page 23 ).
2. Remove the access panel (on page 27 ).