There isn't much that just looking at it will tell you. It should be clean inside, no rodents should have made a home in there either. The best test is to put water in it, plug it in and turn it on. If it operates well, it likely is OK, if there are problems, the problems are wedges to get a better price. For the most part, there isn't much to go wrong inside Oscar.
When you head over to take a look at the machine either have them fire it up so it's ready when you get there or plan to wait at least 30 minutes for it to heat up. You'll want to test the steam and group water are hot. Possibly run a backflush to make sure the pump sounds okay. Best test, is an espresso shot, whether it's a good one or not doesn't matter. You just want to make sure you get espresso from the system, that the pump works well.
Coffeenoobie Senior Member Joined: 11 Dec 2011 Posts: 3,009 Location: PNW Expertise: I like coffee
Espresso: N S Oscar Grinder: K30 & Vario W
Posted Thu Nov 7, 2013, 8:10pm Subject: Re: Question about Oscar
Take a flashlight and small camera. There are 6 screws, 2 are under the flap. Look for rust and drips and if it heats it is probably ok if the price is right. Everything is pretty easy to fix if something is wrong. Plan on a gasket and maybe a pump. 6$ and 50$
Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.
I know it's tempting to buy these things when they come up, but often there's another deal just around the corner if you wait and watch craigslist. Spend a month checking it often and you might find a really good deal.
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