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 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...
