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Chris Albertson
开云体育These things are a thermal switch. ?They open an electrical circuit if the temperature is above their set point. ?So you would bolt them firmly to any object that you do nopt want to be very hot. ? That might be the motorBut our mini-lathes are usually hand operated so the operator would be close by and if the spindle jammed, he’d see it and shut off ther power manually. There switches are mostly used on automated equipment where the operator is not present. ?It might be good to have one on a CNC lathe or mill because you might not be nearby while it is running. ? I have one on the heated baed of a 3D printer as a backup shutdown in case the primary controller fails to detect an accidental overheating. ? ?THese are almost always used as a backup system to a primary controller. You see them mounted inside domestic water heaters too, If the heat ever gets to 125C, there is obviously something wrong (water can’t be heated over 100C) and the system needs to shutdown. ?Same with cloths driers, they use these thermal switches to shutdown power if the unit gets too hot, which would only happen if the primary controller failed. Modern equipment of all kinds is usually designed so that it remains safe even after a major failure happens, ?So they use these on anything that can overheat and catch fire. ? But again, do you need one on a manually operated lathe? ?If so then why not on a drill press, table saw or bench grinder?
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