If you are refinishing hardwood, the coating doesn't really get properly hardened for 2-3 weeks. I wouldn't slide anything on the wood even if it is on slippery pads.
Here's what the big kids do. Get a roll of "construction grade Kraft paper" then roll it out over the area of interest. For an appliance, lay down a piece of Masonite on top of the paper. Then slide the appliance onto the Masonite. If you have two pieces of Masonite, start out on piece #1, slide the item across that piece then onto adjacent piece #2. Pick up piece #1 and place it ahead of piece #2 and continue moving the item to the desired destination.
The Masonite is slippery but very durable and is only 1/8" thick so it doesn't hinder moving a heavy appliance onto the surface.