PG 8528 isn't really a 'dishwasher'
The PG 8528 isn't really a 'dishwasher', it's actually a laboratory glassware washer - as used in hospital laboratories etc.
I believe such laboratories have to keep records confirming that each item of glassware has been washed correctly, including confirmation that the water in the washer reached the correct temperature, and that the correct temperature was maintained for the correct period of time.
I think older washer models displayed this information on a screen, or printed out a slip of paper, which the operator had to copy/key in to the record keeping system. So the intention was to lessen the need for human intervention, and lessen the scope for human error.