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Input:
Question: I wonder if I can use this machine in South Korea, where 220 Voltage is only applicable. Is this coffee roaster compatible with 220V?
Document: Since the decaf is different from regular and the different kinds of beans have been aged differently and are different sizes, I will be experimenting and logging the roasts as I go along. IMPORTANT: I found out that the extension cord lowered the voltage and that is why my first try never did roast. I am even keeping track of which outlet I use, as this machine is sensitive to small variances in electric current. I also found out that the beans rotate more evenly when I use the full 4 scoops.
This roaster allows me much more control over my roast than any other roaster I have owned. I can roast to city or vienese roast  in less than 10 minutes. It is realy well designed and powerful. I love it. The only thing I would change would be to increase the quantity of coffee it can roast. I have to roast beans at least once a day, often twice. This a good machine for any one for home use.
After trying to get decent crema from my espresso machine (LaPavoni Lever) for over a year and failing miserably, I finally broke down and bought a home roaster (SR500). I had no idea how important the freshness of the coffee beans was to extracting good crema. I went from virtually none to a third (sometimes half) of my shot. I was getting fresh beans from a reputable roaster (not Starbucks) but they were going stale long before I could use them.
I am using it in Japan. Because of 100V voltage in Japan, I need to use transformer 100V to 120V and maker support staff was kind enough to help to find the right transformer.Product is well designed and satisfied with the functions.
I have had the the original FreshRoast 8 for eight years now and it still works although I have had to do some repair work to it. I like the newer FreshRoast SR500 because it will roast twice the amount of coffee than the older machine. It is also more controlable because you can vary the fan speed. The heat is also variable, but I think it is better to use the high heat setting.
My husband likes to roast as it gives him some "Home Ec" time, lol. Anyway, the machine is easy to use. As the guide will say, it takes a few tries to get the roast time down that suits your coffee taste. There is a strong roasting smell, which some may dislike, so just do in another room if someone doesn't like it :) The glass portion gets VERY hot, so be careful. Consider buying an extra one of the glass canisters since it is fragile.
This roaster does a good job of roasting and simple to operate. The only two things I do not like about FreshRoast SR500, one is the small amount of coffee that can be roasted at a time. The other and more serious, is how easily it can slip out of your hands do to the very slick surface of the machine. It is difficult to hold on to when carrying it. Over all the machine does a good job.
If you're going to roast your own coffee at home, this roaster is a lot better than a converted popcorn popper. Sure, you'd save money with the popper, but the adjustability and convenience of this machine are worth the price.
Still works great. I use compressed air to blow out the guts occasionally since it inhales air through the base and expels it at the top. Nothing major has ever come out but it seems like minimal routine maintenance to keep the machine running. I use mine on the deck, outside. I note that the plastic does get less shiny due to UV exposure.
I am very satisfied with this coffee roaster. I am pretty new to roasting coffee, and I have only been doing it for about eight months. Prior to this roaster, I was using a hot air popcorn popper which went on the fritz. So I bought another really cheap and the same brand but it cooked my beans too fast and burned them up. So I comparison shopped for a real roaster with a decent price and decided to try this one. It works great and is very very simple to use.
Answer: No Sir. It is not compatible if bought for the U.S. Market but I recall, if I am not mistaken, that manufacturer has a 220 v. Vversion of this item for other marketplaces.  Contact manufacturer to be safe.