I'm envious....congrats on owning a Dickey...an incubator that size is like a Battleship in the harbor....it takes awhile to turn it around. Just wait till you put the eggs in and watch the temp...humidity, volume in the incubator will keep you busy adjusting, I guess that is why I hear people putting small water bottles in the incubator to fill the room for small batches (volume and hold heat)....but how sweet it is.
I've been playing with a used laboratory incubator with a microprocessor thermostat... I got this week...and have 3 different temperature gauges all reading different temps inside the incubator.
Keep playing with the your Dickey, you will figure it out and have many happy hatch'ens.