Urgent Repair Case Study for Motor Maintenance

This case study documents the urgent repair of a 700 HP motor at Sulzer’s service center in Colton, CA, following a bearing failure that resulted in significant production downtime for a minerals processing company in the USA. The company relies on large motors for essential equipment, and the failure of one motor highlighted the importance of regular maintenance. The motor was sent for inspection, revealing overheating and damage to the rotor and stator. Sulzer expedited the repair process by utilizing existing technical records and manufacturing necessary parts in-house. Despite the challenges, including a dual outage that affected production volumes, Sulzer managed to reduce the expected project time from five weeks to four by working efficiently. The case emphasizes the need for consistent maintenance practices to prevent failures and suggests improvements such as installing temperature sensors and shelters to enhance motor reliability. Sulzer's quick response ensured minimal disruption to the customer’s operations.