Supero SuperServer 6041G, User Manual

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6-4
SUPERSERVER 6041G Manual
6-3 System Fans
Four 9-cm hot-swap system cooling fans provide are located side by side
between the motherboard bay and the front section of the chassis. There
are also one 9-cm exhaust fan, which are located at the back of the chas-
sis to pull the cool intake air through the system and force the hot air out.
System Fan Failure
Under normal operation, all six system fans run at 80% of their maximum
speed, which supplies sufficient airflow while prolonging fan life. If any
fan fails, the rest will automatically increase their RPM to a full 100% to
compensate. An audible alarm and an LED on the control panel will notify
you of any fan failure. You can disable the alarm with the alarm button on
the control panel. The system cooling fans are hot-swap components,
which allows you to replace them without powering down the system.
Identifying the failed fan
To determine which fan has failed, first remove the top chassis cover. You
can then check the fan fail LEDs on the control panel's printed circuit board
(PCB), which can be viewed through a cutout on its protective metal cover.
See the designation written by the red illuminated LED on the PCB to deter-
mine which fan has failed (Figure 6-2). After determining whether it is a
cooling or an exhaust fan and the number (position), you should refer to the
following two sections for replacement.
Fan Power Override Switch: Turn this switch ON to manually supply
power to the system fans. The default setting for this switch is OFF. The
system cooling fans normally run at 80% of their maximum RPM to allow for
this backup compensation and promote fan life. Turning the fan power
override switch to ON overrides the 80% RPM feature to make all fans run
at their 100% RPM rate. The microcontroller will continue to monitor for any
fan failure when this switch is turned on. You should do this if you want
to supply maximum cooling to the system or if the microcontroller malfunc-
tions.