Peel the potatoes and cut into ⅛-inch thick crinkle-cut slices using a mandolin. Place in a bowl, add the vinegar and water, and let soak for 20 – 30 minutes. Drain and pat very dry.
Put the potatoes in a dry bowl, add oil and 1 tablespoon salt. Toss well.
Preheat the air fryer to 325°F. Spray with cooking spray.
Working in batches, place potatoes in a single layer in the air fryer and cook for 15 – 20 minutes, redistributing every 5 minutes.