I was frustrated travelling and trying to find an Inon Z-240 manual so when I got back to Canada I was determined to fix that. Here is my best effort with the equipment I have to painstakingly scan the original manuals page by page. I hope this helps someone out there. I hope you can grab them on Dropbox as I could not see a way to attach a PDF here.
https://www.dropbox.com/s/ioruhcqu1g4rzb7/Inon Z-240 Type 4 User Manual (Advanced).pdf?dl=0
https://www.dropbox.com/s/dlwdcwznrlxs75a/Inon Z-240 Type 4 User Manual (Basic).pdf?dl=0
Another THANK YOU! I just got a pair of Type 3 with no manual. These are great!