Here is how I clean up after acrylics with my 200. I don't use enamels, but they can't be too dissimilar.
I start by pulling the dirty color cup off and dropping it in a container of Windex or some other ammonia based window cleaner (I use ZEP brand) to pre-soak while I attend to the airbrush. I re-use "dirty" cleaner for this. I had originally started with fresh cleaner, and reseal the container after each cleaning. I've had to add some "fresh" stuff in over the years.
I take a piece of paper towel and "wick" out any remaining paint from the siphon tube on the airbrush, and then swab it out with a Q-tip soaked in fresh Windex. Then I hook up a clean color cup and fill that with cleaner and spray through the airbrush. I spray into an old plastic jug (mine is a plastic cooking oil container) with an X slit in the side. I have the opening stuffed with a filter for air conditioner inlets to catch any paint particles that may rise through the opening. I use the same pressure I paint with.
Then I lower the pressure to a bare minimum and hold a piece of paper towel over the nozzle end, and backflush the nozzle. You have to be very careful that you don't damage the needle tip while doing this. I pull my needle back until I can't see the tip in the nozzle first. This forces any remaining paint out of the nozzle, but fills the container with bubbles, which I wipe out with the paper towel.
Then I refill and crank the pressure up to 30+, and spray until empty. Then I take a wetted clean Q-tip and wipe out the spray regulator. Sometimes I take the regulator off to check that there isn't any paint left behind, but mostly I don't. Then I spray distilled water through the airbrush. I live in an area with very heavy water, and it wouldn't take too long before the airbrush can get clogged with calcium!
At this point, I deal with the color cup, and I use pipe cleaners (not the cheap hobby kind! find a tobacco shop and get "real" pipe cleaners) to ream out the siphon tube. Rinse with water and dry with paper towel.
Then I carefully pull the needle to wipe it down (careful it is sharp) and lube the front third with glycerin and carefully re-seat the needle. Since I always have some glycerin left, I wipe the interior of the cup with it. I can pretend that the thin layer will help with cleaning the next time, and since glycerin is a retardant it isn't going to hurt anything.
Total time, less than 4 minutes. I prepare all the cleaning stuff before I paint, that way I'm all ready
to clean up immediately after painting.
If I'm cleaning up between colors, I don't take off the regulator or pull the needle.
I leave the cleaning jug outside to evaporate out any residual cleaner.