8
An interrupted process does not start automatically (restart protection). The process must be restarted
manually.
2.5 Door monitoring system
The ACS 921 is equipped with a door monitoring system. A sensor installed at the bottom right of the housing
serves this purpose. The control system of the ACS 921 checks the sensor for proper functioning before each
start-up.
If the door is opened during the cleaning process, an active process is stopped immediately and the message
DOORS OPEN appears on the display.
As soon as the door is closed again, the active process continues at the same point.