Cisco Systems SFS 3012 User Manual

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3. Tighten the two captive panel screws on the front panel to secure the card to the chassis.
Removing a Blower Tray
To remove a blower tray, perform the following steps:
1. Unfasten the fan tray screws.
2. Pull the fan toward you until it completely disengages from the chassis.
3. Fasten a blanking panel to the empty chassis bay to ensure appropriate cooling. 
The blanking panel is a flat sheet of metal with the same dimensions as the fan tray faceplate. It is 
fastened in the same way as a fan module. 
NOTE: Each fan module contains three fans for a total of six fans. The system requires at least two 
fans to remain operational. In the event that one fan module fails, or you want to hot-swap the 
module, it must be replaced within three minutes.