Michael Axel , Jan 04, 2013; 02:06 a.m.
I think you have a fair deal. I like to flat out ask the owner if there is anything wrong with it, then read their body language. Look for too much rust, that the bellows are in condition with no pinholes or leaks, and that they are not to dried out. It should have the proper condensor for the negative size you're using. Make sure the hean, neg carrier area, and baseboard are parallel. Make sure the light comes on when turned on and plugged in. I think that's about it.