Allied Telesis AT-SBx31CFC960 - Manual (Page 280)

Chapter 13: Replacing Modules
280
7. Slowly pull the module out 25 mm (1 in.). Refer to Figure 174.
Warning
The fan module has hazardous moving parts. Keep fingers away
from moving fan blades.
Figure 174. Withdrawing the AT-SBxFAN12 Fan Module 25 mm (1 in.)
from the Chassis
8. Wait ten seconds for the fans to stop.
9. After the fans have stopped, slide the module from the chassis. Refer
to Figure 175 on page 281.
25 mm
(1 in.)