What are the common faults of tubular heaters and how to prevent them?

1. Common faults and causes
Unable to heat -
Reason: The heating wire of the Tubular Heater is broken, the wiring is loose or broken, and the thermostat is damaged.
Performance: No current passes through the heater and the indicator light does not light up.

Leakage -
Reason: Damaged insulation layer, water in the junction box, damaged wire or leakage of the electric heating tube itself.
Performance: Circuit breaker trips or electric shock sensation when contacted.

Cracked or corroded electric heating tube -
Reason: Empty burning (not immersed in medium), medium corrosion, power overload or material defects.
Performance: Cracked tube body, medium leakage or sudden drop in heating efficiency.

Overheating or burning -
Reason: Poor heat dissipation (such as scaling, insufficient ventilation), long-term overload operation, temperature control failure.
Performance: Redness, deformation of the tube body, and even fire risk.

2. Prevention and treatment measures
Standardized installation and operation: Ensure that the effective heating area is fully immersed in the medium (liquid or metal), and no empty burning is strictly prohibited. The working voltage does not exceed 1.1 times the rated value, and the three-phase power supply must be properly grounded. Choose stainless steel or titanium materials for corrosive environments, and strengthen sealing and rust prevention in humid areas.
Regular maintenance and cleaning: Clean the surface of the pipe body regularly every week, using chemical cleaning agents or mechanical scraping. Measure the insulation resistance (≥1MΩ) every month. If it is lower than the standard, it can be dried in an oven (bake at 200℃ for 5-6 hours). Equipped with a temperature sensor and a leakage protector to prevent overheating or overload.