Q:Heating Tube Surface Turns Red or Blackened

Possible Causes:

• Excessive power design, leading to surface overload.

• Dry firing (not fully immersed in liquid or used in air).

• Poor heat dissipation (e.g., enclosed installation space).

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Solutions:

• Select a heating tube with appropriate power (safe surface load ≤8W/cm²).

• Ensure the heating zone is fully submerged in liquid (generally ≥80mm required).

• Improve ventilation or install additional cooling devices.