L&L Parts

This is the long thermocouple used in the Easy-Load and Hercules kilns. It is normally supplied in the kiln with a thermocouple protection tube (although the protection tubes rarely need to be replaced. We strongly suggest that, when changing the thermocouple, you remove the protection tube and empty and metallic oxides that may have fallen off as the thermocouple aged. That material can touch the new thermocouple and make for uneven temperature readings inside the kiln. See this link about Error D.