Sweeping surfaces with air will eliminate condensation issues on and around cooled displays, such as refrigerator and freezers. Issues with condensation lead to bacterial growth and unsafe conditions, such as wet floors. This is solved through directing the air toward the problem area.
Condensation forms where warm air meets cold air, typically on the exterior of the cold displays. Sweeping the surfaces with air dries out any condensation formed on surfaces, and a dry surface prevents microbial growth.