AlxDroidDev:
I just tested it and so far I am a bit disappointed. The vaccuum pump isn't as powerful and it should be.
You know you should clean it with the tools you got with it, right ?
(Look under the unit if you haven't found those tools yet).
If you didn't get the cleaning tools, you can order some of these, they work for me too.
I've got a ZD-987, and the tools were missing for about a year (they were stuck under the control unit).