at an overseas location, we have 9, two-year old Kone units with MX-20 shaft-mounted motors. One motor is tripping the .5 amp VFD breaker when actuated, and the windings meg to ground at 500v. The Kone contractor says the motor has failed, Kone Co confirms this.

Any experience to confirm the diagnosis? Changing the motor appears to be a major challenge, and the Kone rep has not done one before.
Suggestions? Tnx.