User guide

18 Installation
3.7 Changing the Fans
The PXIS-3320 chassis has ten 80 mm x 80 mm x 25 mm fans.
These fans are installed in two decks of fan trays. Five fans are
located at the bottom of the chassis for air intake, while the other
five fans are installed on top of the chassis for air ventilation. The
fan trays are hot-swappable.
When a fan fails to operate, the alarm buzzer beeps and the fan
LED flashes to alert you. Reset the alarm by pressing the alarm
reset button, then replace the defective fan.
To replace a defective fan:
1. Remove the fan tray cover by loosening the thumb
screw.
2. Check the LED in front of each fan tray. The LED blinks
when the fan is defective.
3. Remove two screws that secure the fan tray to the chas-
sis, then carefully pull the tray out of the chassis.
4. Install a new fan into the tray, then secure it with two
screws you earlier removed.
5. Replace the fan tray cover.