When using a high - temperature electric furnace, the following measures should be taken to ensure safety:

  1.Equipment inspection

Before each use of the high - temperature electric furnace, carefully inspect the appearance and internal components of the equipment to ensure that the equipment is in good working condition. Specific inspection items include:

 (1) Appearance inspection: Check whether the furnace shell is intact and has no obvious damage or cracks.

 (2) Power cord inspection: Check whether the power cord is worn, aged or broken to ensure that the power cord can supply power normally.

 (3) Control panel inspection: Check whether the switches, buttons and indicator lights on the control panel work normally.

 (4) Temperature sensor inspection: Ensure that the temperature sensor is well - connected without loosening or falling off.

 (5) Thermal protector inspection: Confirm that the thermal protector can work normally to ensure automatic power - off when the temperature is too high.

If any abnormality or malfunction is found, immediately stop using the electric furnace and contact a professional for overhaul or repair.

  2.Environment and safety

 (1) The laboratory should maintain good ventilation, ensure natural ventilation or install ventilation equipment to prevent the accumulation of harmful gases generated by high - temperature operations.

 (2) The high - temperature electric furnace should be placed in a stable position and ensure that it is well - grounded to avoid equipment leakage or accidents.

 (3) Around the heating equipment, it is strictly prohibited to stack flammable, explosive items, gas cylinders, etc., to prevent fire or explosion accidents.

 (4) Corresponding operating procedures should be formulated and posted in a conspicuous place for laboratory personnel to consult at any time.

  3.Preparations before operation

 (1) Before using the high - temperature electric furnace, carefully inspect the equipment condition. Only after confirming that the equipment is normal can the operation begin. First, clean the impurities in the furnace chamber to ensure that there are no residues affecting the heating effect.

 (2) Place the items to be burned on the special sample table of the electric furnace and close the furnace door. After connecting the power supply, check whether the indicator light is on, indicating that the power supply has been connected normally. At the same time, open the exhaust hole, insert the thermometer, and adjust the temperature automatic control knob to gradually increase the temperature to the required value.

  4.Precautions during operation

 (1) During the operation of the high - temperature electric furnace, pay close attention to the temperature change and monitor it in real - time through the display screen on the control panel or a thermometer. Generally, the electric furnace is automatically controlled by the control software to heat up, but the operator still needs to be vigilant to ensure that the temperature is controlled within a safe range.

 (2) If the temperature reaches the set value, adjust the temperature - control knob so that the green indicator light is on, indicating that the temperature has reached and remains stable. It should be noted that water and liquids should not fall on the furnace plate or furnace wire to prevent short - circuit or damage to the heating elements.

 (3) During the burning process, the substances to be burned must be placed in intact crucibles or porcelain dishes and sent in (or removed) with long - handled crucible tongs. They should be placed as far as possible in the middle of the furnace chamber and not touch the thermocouple to avoid breaking it. At the same time, chemical substances with acidic, sulfur - containing volatiles or strong oxidants should be pre - treated, and only after the volatiles have been completely removed can they be placed in the furnace for heating.

  5.Precautions after heating

 (1) After the burning is completed, cut off the power supply. Do not open the furnace door immediately. Only when the temperature drops to a certain range can the furnace door be opened, the burned items be taken out, cooled to a certain temperature, and then placed in a desiccator to cool to room temperature.

  6.Staff training and operation norms

 (1) Staff should receive professional training and possess relevant operation certificates.

 (2) When operating the electric furnace, strictly follow the operating procedures, abide by relevant operation processes and precautions.

 (3) The laboratory should formulate corresponding safety operating procedures and ensure that all operators are familiar with and abide by these procedures.

  7.Maintenance

 (1) Regularly check the status of the power cord, control system, heating elements and other components of the electric furnace, timely detect and repair problems to ensure the normal operation of the electric furnace.

 (2) Regularly clean the dust and debris inside and outside the electric furnace to avoid affecting the heating effect and safety.

 (3) Check and replace the easily damaged parts such as ceramics and insulating materials in the furnace to maintain the working quality of the electric furnace.

These safety measures are based on the latest search results, ensuring the safety and effectiveness when using a high - temperature electric furnace. In actual operation, these safety measures should always be followed, and appropriate adjustments should be made according to the specific model of the electric furnace and the use environment.

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