So we had a tech go out on a call for produce sections freezing product. This is a multi deck produce loop on a rack. The cases are fitted with non adjustable expansion valves. The tech recommended that we install stem kits on the valves and adjust superheats. But the service manager recommended installing an EPR because the cases are controlled by pump down right now and he was told by manufactures that non adjustable valves should not be used on pump down systems. Due to poor superheated control.
Can anyone verify that statement.