The temperature rating of the magnetic material we use in the HV rotor is 180C, however we suggest not heating your motors above 175F. As another poster commented, we offer motor thermal overload protection in the Novak BL systems.
Users don't like it, they call it "thermalling" as if shutting the motor down before it overheats and destroys itself is a bad thing...
You can return that motor and replace or exchange it for any HV wind motor you want:
Motor Replacement Exchange Options