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Posted by hallerb@aol.com on April 8, 2008, 7:16 pm
another device thats designed to fail in a benign way are cal stat
thermostats. they are designed to go lower than their design
temperature as they age.
in 30 years of using them for my job i have only ever seen one fail
hot, while i have replaced a couple hundred that failed low...........
for liability reasons no one wants something that when it ages its
dangerous
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