The energy systems were the responsibility of the custodians; the same people who swept the floors at night. The poorly trained operator was wasting more of the owner’s money every year than it would have cost to hire one with the required education, skills and experience.
Holmes: Did I ever tell you about finding a ghost in a chilled water system Watson?
Watson: Come on Holmes. I may be a young pup and not as smart as some humans, but I know there is no such thing as a ghost.
Holmes: Let me tell you what happened before you make up your mind.