The microprocessor-based control methods and flowchart of Carrier 19XR centrifugal water chiller are described. It can be a reference to equipment operation and maintenance people.

Mullaly also set up mandatory weekly management meetings he called the business process review (BPR) for his top executives to get to the root cause of Ford's long-standing problems.

This paper presents the suggestion to the two main steps in the work flow of the control system department, Carrier.