1. The heating part of the electric heating tube shall be fully immersed in the heating medium to avoid damage to the electric heating tube due to the slow heat dissipation exceeding the allowable heating temperature. In addition, the outgoing part of the wiring shall be exposed outside the insulation layer of the heater or the heater, so that this part shall not be damaged by overheating.

        2. The voltage of the input power supply shall not exceed 10% of the rated voltage marked on various electric heating tubes. If it is suitable for lower than the rated voltage, the heat generated by the electric heating tubes will also decrease.

        3. The electric heating pipe terminal shall be relatively fastened with two nuts during wiring, and do not use too much force to avoid loosening the lead screw and damaging the electric heating pipe.

        4. The electric heating pipe terminal shall be kept clean and dry, otherwise it will reduce the insulation performance and be broken down by short circuit. If the environment with chemical corrosion, flammable, explosive and other liquids or gases is applied, the wiring part of the electric heating pipe shall be strictly protected with insulating sealing device to prevent accidents.

        5. When heating some viscose and other substances, such as sodium nitrate, stearic acid, paraffin, etc., reduce the power supply voltage at the beginning of heating to reduce the heating capacity of the electric heating tube. When all melt into liquid, rise to the rated voltage for heating.

        ⒍ special attention shall be paid to the heating medium when selecting the electric heating tube. The electric heating tube shell material shall be free from erosion.

        ⒎ if the electric heating pipe has been used for a long time, the thick pipe scale and oil scale accumulated on the surface shall be removed regularly, otherwise the heat transfer performance of the electric heating pipe will be reduced and the heat load on the pipe surface will exceed the rated allowable and be damaged.

        8. The electric heating pipe shall be stored in a dry warehouse. If the surface is damp due to long-term storage, a megger shall be used to measure the insulation resistance. If it is less than 1 megohm / 500 V, the electric heating tube shall be dried in a 200 degree drying oven.

        ⒐ read the relevant instructions carefully before installing and using the special electric heating pipe to avoid damage.