I'm not a pressman, kind of a press helper somewhat but what de-foaming agent/product do you use for your dampening system? We have a rather old Technotrans alpha.d and a Komori Lithrone 28 and having foaming issues. Thank you!
Foaming is sometimes due to air being sucked into the return side. An accumulater has solved this issue for me, also washing filter bag even new may help. Also
The foaming issues can also be caused by residual solvent being flushed back into your water after washing up. Talk to your fountain solution supplier as they all will carry an Anti-Foam that can be added to the water.