my mac air won't work with my epson PX730WD printer

I'm using a fairly new Mac Air 2 running OS X version 10.9.5, with an Epson PX730WD printer that has worked fine for the last 5 years with my previous Windows laptop. But since changing to Apple the printer seems to be forever disconnecting from my home BT wifi router. It wouldn't have occurred to me that the problem might be the Mac, except I saw many posts on this site with the same problem, but related to different Mac operating systems.

I have re-started the Mac, re-started the printer, to no avail.

Any help really appreciated, thanks