THE MYSTERY The freshwater division of a municipal water works complained that one of three pumps at a lift station was running constantly, causing the hydrostatic chamber to drain empty. This, in turn, caused the other pumps to come on, and eventually put so much pressure on the system that the pipes burst. The system was only rated for 93 psi, but with the other pumps running the pressure…
THE MYSTERY An aircraft company purchased a large used oven and had it moved to their location. They set up the oven and lit it, but it would not stay lit. The customer removed duct work and replaced the burner, but the oven still refused to stay lit. THE CLUES…
THE MYSTERY A local company had a power failure during the night. They have a large salt bath with two burners. One burner relit automatically but the second would not relight — and upon manual relighting would not stay lit.
THE MYSTERY A paint bake oven for a plating company would quit burning at random. The sensor in the flame rod was reporting no contact with fire…
THE MYSTERY A glass company who screen prints logos on customer glass called ACES because the mechanism that advances the glass through the ink dryer wasn’t working.THE CLUES An electrician had already replaced the variable frequency drives, with no effect, so the...
THE MYSTERY A quarry providing limestone for construction and landscaping called ACES because their rock saw wasn’t cutting stone to the proper width. The saw operator had to subtract 1?8” from each cut to arrive at the proper stone width.THE CLUES The operator said...
THE MYSTERY A local chip maker called because their tortilla press would run fine for awhile, but then during the middle of a cycle the press would come down and not return to the up position. Cycling power to the machine it would resume operation sometimes for hours...
THE MYSTERY A municipal water plant was stuck with an unresponsive system of 28 PLCs and an AWOL dealer. The case of the obsolete PLCs. Every vendor the client talked to insisted a whole new system was the only way to get the plant back up to speed again.THE CLUES The...
THE MYSTERY An avionics supplier had been wrestling with a jerky, stubborn, catching oven door for years. All attempts at repair had failed. The case of the jerky oven door.THE CLUES Upon close investigation, the ACES CSI on the scene discovered that the gear box was...
