First, the electric heating pipe should be stored in a dry warehouse. If the surface is damp due to long-term placement, the insulation resistance is measured by using a megohmmeter. If it is less than 1 megohm/500 volts, the electric heating tube should be placed in a 200 degree drying oven for drying; if the electric heating tube is used for a long time, if the surface gathers thick tube scale and grease, it should be removed regularly, otherwise It will reduce the heat transfer performance of the electric heating pipe and cause the thermal load on the surface of the pipe to exceed the rated allowable damage; if the electric heating pipe is selected, special attention should be paid to the heating medium. The electric heating shell material should not be eroded; the heating part of the electric heating tube should be immersed in the heating medium to avoid the heat dissipation and the electric heating tube is damaged beyond the allowable heating temperature. In addition, the wiring lead-out part should be exposed outside the heater insulation layer or heater, so that this part should not be overheated and damaged; its terminal, when the wiring is applied, the two nuts are relatively fastened, do not use too much force to avoid lead-out If the screw is loose, the electric heating tube is damaged; its power supply and voltage should not exceed 10% of the rated voltage indicated on the various electric heating tubes. If it is lower than the rated voltage, the heat generated by the electric heating tube will also decrease. Wait.