How to maintain electric heater?

Any article is the need for maintenance to prolong its service life and work efficiency, especially electrical products, which can effectively improve the efficiency of equipment operation, prolong the life of equipment, reduce equipment loss to improve productivity, reduce production costs.

1. The heating part of the electric heating tube should be immersed in the heating medium to avoid the heat emission is not fast and exceed the allowable heating temperature so that the electric heating tube damage. In addition, the wiring part should be exposed in the insulation layer of the heater or heater, so that this part should not be overheating and damage.
2. The voltage of the input power supply should not exceed 10% of the rated voltage marked on the various electric tubes. If applicable to lower than the rated voltage, the heat generated by the electric tubes will also decrease.
3. Electric heat pipe wiring end, in connection with the application of 2 nuts relatively tight, do not force too hard so as not to lead out of the screw loose and damage the electric heat pipe
4. Electric heat pipe terminal should be kept clean and dry, otherwise it will reduce the insulation performance and be short circuit breakdown, if the application of chemical corrosion, inflammable, explosive and other liquid or gas environment, the electric heat pipe wiring part with insulation sealing device strictly to protect, to prevent accidents.
5. When heating some viscose and other substances, such as sodium nitrate, stearic acid, paraffin, etc., the power supply voltage should be reduced at the beginning of heating to reduce the heat of the electric heat pipe. When all the heat is melted into liquid, it will be heated up to the rated voltage.
6. Special attention should be paid to the heating medium when choosing electric heat pipe. There should be no erosion of the electric tube shell material.
7. Electric heat pipe used for a long time, if the surface of thick pipe scale, oil scale should be removed regularly, otherwise it will reduce the heat transfer performance of electric heat pipe and cause the heat load on the surface of the pipe to exceed the rated permit and damage.
8. Electric heat pipe should be stored in dry warehouse, if for a long time, the surface is damp, in the use of megaohm meter to measure the insulation resistance. If less than 1 megohm /500 volts, the electric heat pipe should be placed in a 200℃drying oven for drying.