On a critical production line, a motor stopped working and would not restart. You and another electrician responded to the trouble call. It didn't take you long to see that the insulation was cooked. Fortunately, a replacement was in the stockroom. While you were aligning the motor, the operator commented that the motor had been replaced three times this year and he'd never seen anyone using a laser before. Your boss came by to check progress, and when you asked him for the emergency work order, he said he already filled it out.
What are some problems that contribute to the recurring failure? What steps can you take to reduce the likelihood of a fourth failure?
This high failure rate for a critical motor indicates poor maintenance practices, and you've just seen two of them: