I was going to ask what was the best way to dry out your "Reefer", but then I just figured I would not get any answers to my question.
Since I have never driven a reefer before, the guy I called yesterday told me to make sure that my trailer floor was dry. I will be bringing down a load of boxes from Johnstown Pa to West Palm Beach. I can understand why the floor would need to be dry, but not the best method to use. A floor squeegee or 12 volt blower come to mind, but I really have no idea.
Drying the reefer floor is a recurring problem when you haul both refrigerated and dry freight. Depending upon the weather, the floor can take a long time to completely dry. That being said, some shippers will load a floor that is fairly dry, though maybe not completely dry.
I loaded paper in Maine, explaining to the guy on the dock that I had wanted to arrive earlier but that I wanted to make sure my floor was completely dry before arriving. Now this is rolls of paper on the floor of the trailer. Any moisture on those rolls of paper ruins them. When they are loaded, however, they are loaded on thin rubber mats. They guy told me, "Don't worry too much about it. As long as it's not 'real wet' it's no problem."
You can turn the unit on heat, as high as it will go, but this takes a long time. You can park the trailer with the back facing the wind, and open the doors. The trailer floor will begin drying at the back and gradually dry toward the front, and that is on a dry day with a breeze.
I have run into the problem many times. There is "completely" dry, and there is "damp, but no drops of water" dry. A lot depends on the shipper and the receiver. It's usually not black and white, rather shades of gray. It's usually not wet or dry, rather degrees of dampness.
I play the problem by ear.
It can take a long time for a damp reefer floor to "completely" dry.