Troubleshooting A Dry Surface with A Wetter Interior in Infrared Fruit and Vegetable Drying

The expensive mistake is to change hardware before the job has a measurable definition. Start with the workpiece, the acceptance test and the operating envelope. That keeps the investigation narrow enough to learn from.

Start With the Symptom

Write the defect in observable terms—where it appears, when it began and whether it follows a zone, recipe or material lot. “Not enough stable moisture and quality without surface scorching” is too broad to diagnose.

Work Through the Cause Chain

1. Confirm material and incoming condition.
2. Check presentation, distance and motion through the working zone.
3. Verify the measurement method and sensor view.
4. Inspect lamps, reflectors, conveyor, airflow and sanitation access.
5. Change one variable and repeat the acceptance test. The result can shift with slice thickness, sugar, structure, loading and airflow, geometry, surface condition, distance, airflow, line speed and the way temperature or dose is measured. Record those conditions together; a setting without its context cannot be reused reliably.

Stop Conditions

Stop the trial if guards, cooling, exhaust, interlocks or the approved operating envelope cannot be maintained. A food-heating application label does not establish hygienic design, cleanability or dehydration performance.

Where the Product Record Fits

The current Henruite record describes a short-wave quartz infrared oven element documented for food-baking equipment. That makes it a candidate to review only after the required product temperature, moisture loss and water activity and mechanical/electrical interfaces are written down. Compare the documented record at Henruite food-heating lamp record, then qualify the installed result on representative work. The catalogue is evidence of an available product family; it is not proof of suitability for this task.

Related Articles

• Short-wave IR Drying vs IR-assisted Convective Drying for Infrared Fruit and Vegetable Drying
• How to Diagnose Uneven Stable Moisture and Quality without Surface Scorching in Infrared Fruit and Vegetable Drying

Sources

• FDA Water Activity in Foods
• FDA Produce Safety Rule for Consumers
• US DOE Food and Beverage Products
• Henruite configured product evidence