How do I save to my iphone from acrobat.com

     How do I save to my iphone from acrobat.com to view without downloading each time (with exception to the first time I download it). I sometimes view large documents from inside a building with a poor data connection and I don't have WiFi access.  I have several manuals stored at acrobat.com and would like to be able to save and delete files locally on my iphone.