Tevo Tarantula layer cooler for dual extruder & compatible to auto leveling

dual fan 50x15

Fan model e.g.: MF50151VX-A99 or MF50151V1-A99

speed limit required, otherwise it could fail with thermal runaway if control is enabled.
Check your PID settings, make a PID autotune http://reprap.org/wiki/PID_Tuning and store these settings.

added 4 model files:
lifts the fans by 0.5 or 1.0mm up
the fan holders for that don't have the rear extension cutout.