When the electric furnace is used twice or after a long period of disuse, it must be dried. The baking time should be four hours at room temperature of 200 ℃. 200 ℃ to 600 ℃ for four hours. When in use, the furnace temperature should not exceed the rated temperature to avoid burning out the electric heating elements. It is prohibited to pour various liquids and easily soluble metals into the furnace. The electric furnace operates at temperatures below 50 ℃, which means that the furnace wire has a longer lifespan.

The electric furnace and controller must work in a location where the relative temperature does not exceed 85%, there is no conductive dust, explosive gas, or corrosive gas. When metal materials containing oil or grease need to be heated, a large amount of volatile gases will affect and corrode the surface of the electric heating element, causing it to be destroyed and shorten its lifespan. Therefore, timely prevention and proper sealing of containers or appropriate openings should be taken during heating to eliminate the problem. The controller should be limited to use within the ambient temperature range of 0-40 ℃.

According to technical requirements, regularly check whether the wiring of the electric furnace and controller is in good condition, whether there is any jamming or retention phenomenon when the pointer of the indicator moves, and use a potential difference meter to calibrate the instrument for errors caused by fatigue and balance failure of magnetic steel, demagnetization, wire expansion, and spring fragments.

Do not suddenly pull out the thermocouple at high temperatures to prevent the jacket from exploding. Regularly keep the furnace clean and promptly remove oxides and other substances inside the furnace.