Quality issues of the thermal oil electric heater itself

Quality issues with thermal oil heaters and improper user operation can lead to leakage accidents. Let's summarize:
1. Thermal oil heater manufacturers specify that heating elements operate under the following conditions: a. Relative humidity does not exceed 95% and there are no explosive or corrosive gases. b. Operating voltage should not exceed 1.1 times the rated value, and the housing should be effectively grounded. c. Insulation resistance ≥ 1mΩ, dielectric strength: 2kV/min.
2. The heating element should be fixed securely, with the active heating area completely immersed in liquid or solid metal. Venting is strictly prohibited. If scale or carbon is found on the surface of the element, it should be cleaned and reused promptly to avoid affecting heat dissipation and shortening its service life.
3. When heating air, the elements should be evenly arranged in a cross pattern to ensure good heat dissipation and sufficient heating of the air flowing through them.
4. When heating fusible metals or solid salts, alkalis, leachates, paraffin wax, etc., the service voltage should be reduced first and raised to the rated voltage only after the medium has melted. 5. Safety measures should be taken when heating saltpeter to prevent explosions.
6. Wiring components should be placed outside the insulation to avoid contact with corrosive, explosive media, and moisture. The wires should be able to withstand the temperature and thermal loads of the wire connections over time, and excessive force should be avoided when tightening the wire connection screws.
7. These components should be stored in a dry place. If the insulation resistance drops below 1Ω due to long-term storage, they can be dried in an oven at approximately 200°C or heated at reduced voltage until the insulation resistance recovers.
8. The magnesium oxide powder at the outlet of the electric heating tube should be protected from contaminants and moisture at the location of use to prevent leakage.