Installation guide

Replacing a Fan Tray
BlackDiamond 20808 Switch Hardware Installation Guide
103
Replacing the Rear Fan Tray
To replace the rear fan tray:
1 Set the replacement fan tray on a secure work surface.
2 Extend the side rails (Figure 69):
a On each side of the fan tray, remove the screws holding the side rails in position.
b Holding the faceplate of the fan tray, pull the inner rails out until the two rear holes on the inner
rail are aligned with the two holes on the outer rail.
c Re-insert the screws to hold the side rails in the extended position.
Figure 69: Extending the Side Rails
3 Attach the ESD-preventive wrist strap to your bare wrist and connect the metal end to the ground
receptacle below the right end of the fan tray front panel.
4 Remove the failed fan tray (Figure 70):
a Completely loosen the captive retaining screws.
b Pull the fan tray a few inches out ot the chassis.
c Wait at least 30 seconds for the fans to slow their rotation.
CAUTION
Be careful to keep your fingers away from the rotating fan blades as you remove the fan tray from the chassis.
d Carefully slide the fan tray out of the switch chassis. Be sure to support both sides of the fan tray
as you pull it free of the chassis.
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