The steam generator is all of that metal fin-work around the heating element. You can tell if one of these machines has been used in hard water with poor detergent because these get all crusted with white mineral buildup. I was happy to see that this machine was free of mineral buildup. I think it was more of a gimmick because just running the pump and heating the water like a WP would provide more effective cleaning, although maybe with this machine, the less you ran the motor, the longer it would last.
I worked in a kitchen store in DC to earn some money to pay for renovations on my house. It was called Kitchen Bazaar, although some people called it Bizarre Kitchens. There was a demo kitchen at the back with a Thunderdor DW. There were demos from famous chefs and cookbook authors most Saturdays and I loved to clean up after. When I started, they had lots of Calfalon which had lots of brown grease varnish all over it because nobody had bothered to really clean it thoroughly. It was not supposed to go in the DW, but between some oven cleaner on the outside and regular trips through the Thunderdor, I got that stuff cleaned up and looking like new.
Do any of you remember the joke about the Yuppie kitchens of the 1980s having a commercial range, $1500 worth of Calphalon hanging over it and all of it unused because all meals were eaten out?