Suitable Scenarios A glass furnace never holds still — batch charge, pulling rate, ambient temperature and fuel quality all move daily. Operators who run a furnace on manual knobs accept ±20–30 °C swings that cost yield and shorten refractory life. JEFFER's furnace PLC/DCS control system is the automation layer that ties the furnace, combustion system, forehearth and batch charger into one supervisory loop. It is shipped as standard on JEFFER furnace deliveries (including the