Motor Rewinding Process: After disassembling the motor, we perform a Surge Test and a Hi-Pot test to evaluate the condition of the motor windings. We use sophisticated test equipment, which is calibrated annually to UL standards to perform these tests. These outputs give us a precise report on whether the windings are shorted, grounded, or whether they are beginning to show any signs of pending failure. (Insert Motor rewinding picture)

If it's determined that the motor should be rewound, then we typically will proceed with the following sequence of steps:

Cut the crown of the winding, burn the stator in a computerized oven that allows us to adjust temperatures based on housing material, i.e. aluminum or steel. 

We then Core Loss Test the stator to determine whether the iron in the motor has lost any of its magnetic properties. This would negatively affect motor performance. Outputs are recorded and filed.

The second from last step is to wind and install the new coils. We have a wide range of winding heads which allow us to rewind coils in exact accordance with factory data. The coils are installed in the stator and insulated. The winding is rewired and any necessary overloads or sensors are tied into the winding.

The final step is to dip, bake, and test the new winding. The stator is dipped in varnish that is tested regularly to ensure proper viscosity. After draining excess varnish, we move the stator to the bake oven to solidify the varnish and lock the winding in place, The stator is then retested with our test equipment, before being taken to the motor department to clean and reassemble.