Purging the elevator for product changeovers
All mechanical elevators leave residue in the machine at the end of a run. Reversing the casing to empty residual product back into the hopper may purge short Olds Elevators up to 152mm (6") diameter. As elevators grow in diameter and height this residual volume will become several times the volume of the feed hopper. However, whereas it is difficult to empty other mechanical elevators, removing the bottom flange allows the contents of an Olds elevator to be discharged into a collecting tray.