heat treat kiln

bladsmth said:
With a few scarps of sheet metal, and a microswitch, adding the door switch is very easy.
The Normally-Open microswitch is wired in the DC+ line to the SSR from the PID.
Close the door - close the circuit ...... Everything runs as normal.
Open the door - open the circuit ...... This disables the DC control power to the SSR, thus making the coils de-energized.
Click to expand...
:thumbup: Thanks Stacy! I'll refer back to this tip when time to wire a door switch.
 
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