When the opto-buttons are satisfied, the system will start to move to the selected position.2620 It is required that the operator satisfies the 2-hand start opto-buttons during the systems full length of travel.2621 To open and close the system’s rear eject door, all the same preconditions must be meant that were required to move the system in and out of position, but the Gelatin Evacuation system must be in the unload position.2622 Once all these conditions are meant, the operator can actuate the rear eject door cylinders by selecting and holding the correct button on Page 2 of the manual functions screen.