can not find air printer - using epson wf 3520 connected via wifi

Hardware: macbook air

Software: Osx 10.9.5

Epson printer wf3520 connected via wifi is working - latest printer software installed

-when trying to add an air printer sometimes its showing up under bonjour - usually its not showing as available printer

-when it is installed and I try to print I get the message "printer not connected"

Any help how to install it correctly?