A temperature control system includes an enclosure having a plurality of adjoining walls. The method includes the step of receiving a transaction having a number of clinical data elements. A through hole and a blind hole are defined in the retainer. A bias urging assembly is disposed for urging the movable element in one axis-perpendicular direction to the stator. A torque detector detects the rotation torque of the polishing platen or the rotation torque of the substrate holder.