I had one sent it back due to software issues ,purchased another one also have software issues begins to dose then stops and indicates it dosed amount I specified for a $600 unit it's not very wel done considering they have been out for more than two years. Anybody having any luck with there's working properly ?[/QUOTE
I have similar issue bought one returned , bought another back and forth with supplier ,mine starts a dose
Than it stalls after a quarter of revolution , next dose it works fine . It happens ramondoly between the three pumps , No more vertex product purchases for me.