User`s guide

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An additional external redundant fan can be installed behind the system housing. This allows the
system to operate properly even though the internal housing fan failed.
To install an external redundant fan:
1. Open the front panel and remove the left panel of the housing. See section 1.4.1 for more
information on opening the housing panels.
2. Use the screwdriver to push open the plastic peg located below the internal system fan
module.
3. Insert the redundant fan into the fan cage and attach the fan cage to the system housing with
four screws as shown below.