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Got called out for a stuck car in a 90s high rise downtown.
It was a Friday afternoon at the old First National building. The car stopped about three feet above the landing, doors jammed shut. I found a worn limit switch in the pit had finally given out, letting the car overshoot. Had to manually release the brake and lower it onto the blocks to get the people out. Anyone run into those old Allen-Bradley switches failing like that?
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zara5721mo ago
Pulled a similar fix myself in a 70s building downtown. @angelar57 nailed it - those old switches are the real workhorses, just ticking away until they can't. I actually replaced the whole assembly with a modern solid state switch after that, but the old one did its job for decades. Makes you respect how long simple mechanical stuff can hold up when everyone else is chasing shiny new tech.
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angelar571mo ago
Ever notice how the oldest, most boring part of a system is usually the thing that fails? It's never the flashy new tech, it's always some basic switch or seal that everyone forgot about. Those limit switches did one job for thirty years until they just couldn't anymore. Makes you wonder what other simple parts in our daily world are running on pure luck right now.
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