Replacing The Cooling Fan; Figure 3-1: Replacing The Cooling Fan - Advantech IPC-623 Series User Manual

3.2 Replacing the Cooling Fan

There are three cooling fans located in the middle of the chassis. All
of them are hot-swappable and provide the system with ample cooling
by blowing air rearwards. To replace the cooling fan, please refer to
Figure 3-1 and proceed as below.
1. Remove the front top chassis cover.
2. Loose the thumb screw on top of the fan unit and then smoothly pull
it out. It will disconnect the cooling fan power connector.
3. Replace the cooling fan with a new one.
4. Fix the new cooling fan by fastening the thumb screw.
5. Replace the front top chassis cover and fasten it.

Figure 3-1: Replacing the cooling fan