Why do pump motors fail?

Dave Hawley, General Manager – Motors, ABB Limited, writes: There is a lot of debate about whether it is better to repair or replace a failed pump motor. A far better option is to ensure it doesn’t fail in the first place. In theory, a motor could run for as long as 50 years, substantially beyond the retirement date of the connected machine. This can be achieved with regular preventive maintenance targeting the most common…