Same thing just happened to me last Sunday I was running the RO and had other people visiting and my great buddy that always is there helping and always stokes the best fire I smell sugar burning oh it's just a drop from the concentrate not boiling sap anymore thanks to the RO and then I see the yellow smoke so dumped more in to stop it too late at least it was only the beginning of night so not much wasted n pan really didn't buckle much,scotch brite worked fine.I never got to that point but close many times,always hear of people talk how fast it happens!
2021 95 taps all on 3/16' natural gravity 2018 home built 4x40 RO 2017 1000 sap 15gal syrup 4 runs of 3/16 natural vac 1 of 5/16 2016 775gal of sap made 12gal syrup 2015 18.5 gal about 55 taps. Have the best wife! cub cadet volunteer 4x4 sap hauler