Huawei USG6000 Series Hardware Manual page 251

HUAWEI USG6000 Unified Security Gateway
Hardware Guide
To prevent USG overheating, replace the fan module within 1 minute.
Procedure
Step 1 Wear an ESD wrist strap.
Step 2 Remove the faulty fan module.
Use the Phillips screwdriver to loose the screws on the fan module. Hold the handlers to pull
the fan module out of the chassis for a little bit. Remove the fan module slightly from the
chassis after all fans stop running.
When removing the fan module, wait for the fans to stop rotating before holding the bottom of
the fan module to avoid being scratched by the rotating fans. After the fans stop rotating, do
not touch the fan blades and the rotation axis. Otherwise, the fan balancing may be damaged,
resulting in increased noise when the fans are running.
Issue 03 (2015-01-26)
The fan module of the USG is hot swappable.
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