These three microswitches were all wired into a black box - no idea of how they were wired beyond that. I can say that the cover is nice steel with a good paint job - it will be used someday for something.
On Sunday, January 7th, 2024 at 12:34 AM, Jim Cathey <jim.cathey...@gmail.com> wrote: > > > >> I found the fault that caused the microwave to turn on when you open the > >> door - a failed closed microswitch. The little red button is stuck in the > >> closed position. It is one of three activated by the closing of the door... > > > There is something criminally wrong with the design of that oven, if that > kind of single failure resulted in a containment failure. The chain is > supposed to be fail-SAFE, in that all failures result in failure to cook, > rather than ever cooking the environment. > > The designs I've looked at all have three different microswitches in > electrical > series, thus ALL have to say 'go' before the magnetron is powered. > > 1: Door closed. > 2: Door latched. > 3: Start button pushed. > > All three have to fail, opposite their normal state, in order to pump > microwaves > out into the world. > > -- Jim _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
