- Failure modes of fridge thermostat? - 1 Update
- Identify these parts? - 1 Update
| Jon Elson <jmelson@wustl.edu>: Jul 02 03:03PM -0500 Charlie+ wrote: > and capillary pipe is operating and undamaged. Age about 20 years. Mine > failed in the fact that it wouldnt switch once in the off or on state. > For info pic. here: https://www.dropbox.com/s/jxl1sd21cj7sqqb/Thermostat%20%28fridge%29.jpg?dl=0 > Anyone know what fails in these units? Seems not much to go wrong as > long as the gas parts are undamaged? Before I have to destructively > disect it!! C+ There is an over-center spring in the tyupical "microswitch". It is made from a single strip of phosphor-bronze spring material with some slots stamped in it. The middle strip bows and flips from one side to the other of the outer part of the strip, making it bistable. Either the contacts erode, or the spring develops fatigue. No sane way to repair them, but often the switch is a standard size and can be replaced, if a complete replacement unit can't be had. Jon |
| Jon Elson <jmelson@wustl.edu>: Jul 02 02:59PM -0500 Phil Allison wrote: >> I did find this : >> https://www.galco.com/buy/Keystone-Carbon-Company/KC010L > ** That pic looks exactly like a regular NTC thermistor. OOPs, that is indeed what I was thinking of, was NTC, not PTC, for inrush surge limiting. Jon |
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