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Individual organizations should consider developing their own customized Motor Management plan and policy. Some of the factors to consider are: extent of the repair - is it bearings or rewind, lead time for repair vs replace (special builds vs off the shelf), cost of new vs repair, single phase vs three phase, size (HP) of the product, efficiency of the failed motor vs efficiency of the replacement motor, warranty of the new vs repaired. Each organization's criteria and situation will factor into their individual decision tree.

Before you establish what %HP of the new motor value you will spend on repair, you need to know your repair facility. Your service center needs to be following the "EASA AR-100 Recommended Practices". Following these repair guidelines, you will not lose efficiency in the repair process, in fact on larger HP's, there maybe opportunities to gain efficiency if your EASA shop gets EASA engineering involved. Additionally, the repair center should have a recognized and accredited Quality Assurance Program, such as ISO 9000. Weighing in on your decision, compare the new motor to what you are going to get back. Typically a new Nema T frame motor will be insulation Class F (155' C), many EASA facilities will rewind with insulation Class H (180' C) and you will immediately have a 25' C advantage over new. Also, a qualified individual rewinding at an EASA repair facility is (highly) likely to produce greater quality than the factory cranking out "production". Balance standards are also typically better which will yield longer bearing life when the motor is back in service.