cleaning
If anything cooks onto the chrome, it cannot be scrubbed off without taking great pains to avoid scratching the chrome.
Paul, did you lift the lid and keep anything warm on the tray above the element as was often shown in pictures of the units?
The following is not meant to denigrate anyone's happy experiences with a large, enclosed rotisserie-broiler. When Consumer Reports top-rated the Farber Open Hearth Broiler & Rotisserie, it noted that having cool air around the cooking meat prevented it from being roasted by the heated air that surrounds the food in most small broilers and also cut down on the spattering. While the Farber cannot be used for some of the tasks advertised by the enclosed units, some of which offered baking in an uninsulated sheet metal appliance otherwise known as room heating, its design of placing the heat below the food most closely copies traditional grilling over glowing coals and makes the most efficient use of the limited wattage of a cooking appliance operating on 115 volts, to say nothing of the Farber's parts being able to go into the dishwasher for cleaning. The big rotisserie-broilers dated from a time when most domestic ranges did not offer rotisseries and most gas ranges had poorly performing broilers in the inconvenient location below the oven. They were the result of a cooking fad where rotisserie-prepared meats were a hit in restaurants and California-style patio cooking with outdoor barbeques was featured in shelter magazines right after WWII. We were given one by a wealthy friend who knew of my interest in appliances. It had been a gift to them and was still in the original box, but she was not really interested in that type of cooking and it had never been used. We tried it once, but the broiler in our oven was twice the wattage of the portable unit. Its main advantage was that it could be used outside in the summer, which is where we used it. It sat for years before being donated. I hope it made someone happy. Rotisserie cooking was way beyond our level of gastronomic sophistication.