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SuperWorkstation 7049A-T User's Manual
System Fans
Two 8-cm PWM chassis fans provide air intake while one 9-cm PWM exhaust fan expels hot
air from the chassis. All are low-noise fans that result in "Whisper-Quiet" operation (~28 dB).
The fans should be connected to headers on the motherboard.
The power supply includes redundant cooling fans. If one fan fails, the remaining fan will ramp
up its rpm to provide sufficient cooling. The Power Fail LED will illuminate and an audible
alarm will sound, which can be silenced with a button on the power supply. If a power supply
fan fails, you should replace the power supply at your earliest convenience.
Fan Failure
Under normal operation, the chassis fans, the exhaust fan and the power supply fans run
continuously. The chassis fans are hot-pluggable and can be replaced without powering down
the system.
Replacing Fans
Removing a Fan
1. First locate the failed fan by removing the top/left chassis cover. Locate the fan that has
stopped working.
2. Depress the locking tab on the failed fan: on a chassis fan, push the tab on the side of
the housing inward, on the exhaust fan push down on the colored tab.
3. With the tab depressed, pull the unit straight out (see Figure 3-12). The wiring for these
fans has been designed to detach automatically.
Installing a New Fan
1. Replace the failed fan with an identical one (available from Supermicro)
2. Install it in the same position and orientation as the one you removed; it should click into
place when fully inserted.
3. Check that the fan is working then replace the top/left side chassis panel.
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