Precautions for the operation of tubular heaters
The storage location of the tubular heater must be kept dry and proper insulation resistance. If the insulation resistance of the storage environment of the tubular heater is found to be too low during use, it can be used after being restored by low-voltage power. The tubular heater should be properly fixed before use, and the wiring part should be placed outside the insulation layer, and avoid contact with corrosive, explosive media and water.
When the tubular heater is used for heating liquid or solid metal, it is necessary to completely put the tubular heater into the object to be heated, and it is not allowed to burn the tubular heater. After the tubular heater is used, if there is scale or carbon on the outer metal shell, it should be removed in time to avoid affecting the heat dissipation performance and service life of the tubular heater.
When the tubular heater is used to heat easily meltable metals or solid nitrate, paraffin, asphalt and other substances, the heating material must be melted first. At this time, the external voltage of the tubular heater can be reduced, and the rated voltage will be restored when the melting is completed. In addition, when heating nitrates and other explosive-prone substances with tubular heaters, safety measures must be fully considered.
When the tubular heater is used for air heating, pay attention to the uniform arrangement of the tubular heater. The advantage of this is to ensure that the tubular heater has a relatively sufficient and uniform heat dissipation space, and ensure the fluidity of the air as much as possible, and improve the heating efficiency of the tubular heater.
The gap inside the heating element is filled with magnesia sand. The magnesia sand at the outlet end of the heating element is easily contaminated due to the penetration of impurities and moisture. Therefore, pay attention to the status of the outlet end of the heating element during operation to avoid leakage accidents caused by this.