How to use electric tubular heater safely?
Nowadays, electric tubular heaters play an indispensable role in our daily lives. We are also paying more and more attention to the safe use of electric tubular heaters. Once we fail to observe the precautions for safe use of electric tubular heaters, it is very simple to induce Some safety accidents have harmed our personal safety.
How to use electric tubular heater safely?
1. The electric tubular heater should be operated under the following conditions:
A. The relative humidity of the air is not more than 95%, and there is no explosive and corrosive gas.
B. The operating voltage should not be greater than 1.1 times the additional value, and the enclosure should be grounded.
C. Insulation resistance ≥1MΩ, dielectric strength: 2KV/1min. If the operating environment does not meet the above requirements, please stop using the electric tubular heater.
2. The electric tubular heater should be well positioned and fixed, and the useful heating area must be completely immersed in liquid or metal solid, and empty burning is prohibited. When it is found that there is scale or carbon on the surface of the pipe body, it should be cleaned and reused in time to avoid shadow heat dissipation and shorten the service life.
3. When heating fusible metals or solid nitrate salts, alkalis, bitumen, paraffin, etc., the operating voltage should be lowered first, and the additional voltage should be raised after the medium is melted.
4. When heating the air, the components should be placed crosswise and evenly, so that the electric tubular heater has excellent heat dissipation conditions, so that the air flowing through can be sufficiently heated.
5. Consider safety measures when heating nitrate to avoid explosion accidents.
6. Some of the wiring should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture; the lead wire should be able to accept the temperature and heating load of the wiring for a long time, and excessive force should be avoided when the wiring screws are tightened.
7. The electric tubular heater should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven at 200°C, or the voltage can be reduced and heated until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet end of the electric tubular heater should avoid the entry of pollutants and moisture in the application place and avoid the occurrence of electric leakage accidents.
