One way to address the fan control issue is to use the 'Input' function:
- create an input object to place on your desktop and attach to the fan curve {input.jpg}
- when temp is in acceptable range, leave the 'Input' at zero {normal.jpg}
- when temp is at the curve switch range, adjust the 'Input' up or down to activate/deactivate the fans {adjusted.jpg}
By adding/subtracting from the fan curve source, you shift the curve into a on/off range.