In a New furnace or a furnace that has been shut down for a prolonged period of time should be dried bringing the temperature up. The drying temperature generally is 100-200℃. The element will however oxidize if run at low temperatures long periods of time. For the small-size furnace, as its drying time is short, several hours will not affect the element significantly but for the larger one, as its drying time is drawn out it requires more substantial monitoring. It’s better to open the furnace door to allow moisture to escape. The door may be half-opened as the temperature rises and fully closed when the temperature rises above 1000℃.
