Don't know what spare parts to buy as I don't have that model (I have a Medela Swing from 2001), but wanted to say that I live in Norway and Medela is very popular both here and in Sweden, and thus easy enough to buy spare parts. Also, many eBay sellers ship all over the world, just ask before you bid.
Also, make sure that your pump goes from 110-220/240 V or else it won't work (most of the rest of the world goes on 220-240 V, not 110 V). It probably does, but just make sure. Otherwise, you would need to buy a converter as well. And plug ends because your new country will surely have different plug ends (Fry's has them really cheap, so buy there before you move!).
Good luck with your move!
S., mamma to three - 2 girls with me, 1 girl forever in my heart