My biggest concern would be oil contamination from the compressor if you are not using a oil-less pump. Like raouliii said a filter stage should catch the oil. Moisture could be another problem however if you are using a sanitizer afterward there should be no problem with moisture in the keg.
Plotting: Jarrylo test batch, Azacca test batch
Primary: Gizditch Ranch Cider (10/3/15), Sour Batch 1
with The Bruery dregs in primary (7/19/15)
Bottled/Aging: Grandma's Liquid Apple Pie (1/17/15)
Drinking: Nut Brown Ale (9/6/15), Ice Cider with store bought frozen concentrate (9/15/14), Good beer and mead variants