Maintenance
18 1553-KDU 137 365 Uen D 2006-06-16
3.2 Replacing a Fan Tray
The fan tray should be replaced if the FAN status LED turns on red (a cooling
fan in the fan tray has failed).
Caution!
To ensure proper cooling of the ECN330, both fans must be operational. If one
fan fails the ECN330 will continue to run, but the fan tray should be replaced as
soon as possible.
The ECN330's fan tray can be completely removed without powering off the unit.
To replace a fan tray, follow these steps:
1. Remove the fan tray plastic access cover on the right side of the ECN330's
front panel by pulling the cover's right edge out, until it becomes free.
Figure 6 Fan Tray Access
2. Unscrew the fan tray's screw.
3. Grasp the fan-tray's handle and pull it outward to disconnect it from the
ECN330. Carefully slide the fan tray out of the ECN330.
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