The Quad Plus Shop Manager worked closely with the customer to develop a Method of Procedure to replace the trip shaft bearings in the mechanism without having to remove the mechanism from the breaker, or remove the breaker from the customer’s site. This specialized procedure was necessary to expedite the repair as only the shortest amount of downtime could be tolerated by the customer.
To complete the new procedure, our Shop Manager provided training for the customer’s electricians on removal of the trip shaft bearing linkage. That way, the linkage could be brought immediately to our shop for bearing replacement, and returned to the customer quickly to be reinstalled in their breaker.
The result was a breaker that could be put back into service with minimal downtime and the assurance that the failure-to-trip problem was solved. The customer was spared the time and expense of transporting backup breakers from another location to put in use while the original breaker was being repaired as the malfunctioning breaker was out of service for such a short period of time.