I think the basic concept of removing the packing would turn this into a pot still for sure ....but...I am fairly sure I read somewhere that this particular still has a reducer (a plate with a very small hole drilled in it) fitted just before or after the output valve so as to "idiot proof" it so that the user has little control of reflux ratio.
In other words ,you can not run it flat out with the valve wide open because the reducer cause mmost of the condensed distillate to fall nack down the column.