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YSTEM 2028R-ACR24H User's Manual
6-4
System Cooling
System Fans
Three 8-cm hot-swap chassis fans provide the cooling for the 2028R-ACR24H. It
is very important that the chassis top cover is properly installed in order for the
cooling air to circulate properly through the chassis and cool the components. See
Figure 6-3.
System Fan Failure
Fan speed is controlled by system temperature via IPMI. If a fan fails, the remaining
fans will ramp up to full speed and the overheat/fan fail LED on the control panel will
turn on. Replace any failed fan at your earliest convenience with the same type and
model (the system can continue to run with a failed fan). Remove the top chassis
cover while the system is still running to determine which of the fans has failed.
Replacing System Fans
Replacing a System Fan
1. If necessary, open the chassis while the power is running to determine which
fan requires changing. (Never run the server for an extended period of time
with the chassis open.)
2. Press the fan release tab to lift the failed fan from the chassis and pull it
completely out of the chassis.
3. Place the new fan into the vacant space in the housing while making sure the
arrows on the top of the fan (indicating air direction) point in the same direc-
tion as the arrows on the other fans.
4. The fan will automatically begin running at the correct speed.
6-4
Figure 6-3. Replacing System Cooling Fans
Air Shrouds
Air shrouds concentrate airflow to maximize fan efficiency. The SC216 chassis air
shrouds do not require screws for installation.
Installing the Air Shrouds in the Chassis
Installing the Main Air Shroud
1. Lay the chassis on a flat, stable surface and remove the chassis cover.
2. Ensure that the serverboard, CPU, heatsink and memory are all properly
installed.
3. If necessary, move any cables that interfere with the air shroud placement.
4. Place the air shroud in the chassis. The air shroud fits just behind the three
fans in the fan rack. Slide the air shroud into the grooves just behind the fan
rack.
Note that some serverboards may require the air shroud to be modified to fit
over the serverboard. The SC216 chassis air shroud is designed with break-
away pieces that may be removed to accomodate differing styles of server-
boards.
6-5
Chapter 6: Advanced Chassis Setup
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