Pyrolysis is the decomposition of organic material at elevated temperatures without the participation of oxygen.
No Oxygen = No Combustion = Controlled Heat
The efficiency rating on a motor is largely determined by the level of eddy current losses generated within the laminated core stack. The core insulation is not deteriorated by temperature <440ºC, but all other elements within the winding such as epoxy resin and insulation are destroyed completely at 320ºC.
This procedure facilitates the easy removal of the damaged winding whilst ensuring the motor efficiency remains intact. This procedure has been independently verified by Nottingham University (see table below).