What can be damaged if the circulating air drying oven is operated above 130°F?

Operating a circulating air drying oven above 130°F can lead to damage to the oven itself. Many drying ovens are designed with a specific temperature tolerance to ensure effective drying while maintaining the integrity of their components. Exceeding this temperature limit can cause a range of issues, including overheating of the internal elements, degradation of insulation, or failure of temperature control mechanisms, potentially leading to permanent damage that shortens the lifespan of the oven or necessitates expensive repairs.

Each of the other possible answers relates to potential concerns in the drying process or with the equipment used, but the critical focus here is that the oven must not be operated beyond its specified temperature to maintain operational safety and longevity.