First Print on Felix 3.0 (Airduct Fan)

[structur3d]

I have successfully built and am printing with my Felix 3.0 and love it so far. I am having issues with the 'stickyness' of the first layer and realized the airduct fan is not operational. Where is the setting in Repatier and/or in Slice3r to enable this fan?

Cheers!

[hvdd]

hoi,
see on screen on the right side ... below x y z home and speed settings
rgds