I finished one batch of small tomatoes in the dehydrator a couple of days ago. Three and a half trays of tomatoes gave me just two small jars of dried tomatoes.
When I took the small tomatoes out, I immediately started cutting and trimming another batch of tomatoes — larger ones, this time. I decided to set the temperature in the dehydrator at its highest level — 70ºC, which is about 160ºF.
I was glad the big tomato pieces fit as well as they did. I only put them on three trays, the lowest, the middle one, and the top tray, leaving the other two empty to ensure good air flow.
Dehydrating is a very slow process. You don't really have to watch it, so I guess it doesn't matter too much. But I do wonder how much electricity the machine is using. I've let it run for 30 hours straight, but the tomatoes are still not sufficiently dry. I'm letting it run for a few more hours this morning. We'll see.