Looking through the manuals for older GE Potscrubber 1200 (namely the "S" model), I noticed that "Potscrubber" engages an extended main wash and final rinse.
How is this achieved? Is there a 2nd timer motor which times the disengage period for the main one, or does a water temperature thermostat stop the timer, but allow continued washing during the heating phase?
On a side note, its odd that models after the "S" decided that "Light Soil" cycles required 3 pre washes, whereas the "S" would actually skip some of them - I'm assuming it either paused for this time, or maybe rapid advanced.
Post# 598631 , Reply# 1   5/24/2012 at 07:28 (4,355 days old) by combo52(50 Year Repair Tech Beltsville,Md)  
GE used a cycle extender which was a little thermal relay mounted in the control panel near the timer. This CE would pulse the power to the timer motor when the CE was in the circuit so the timer motor was off most of the time.
Post# 598733 , Reply# 2   5/24/2012 at 17:01 (4,355 days old) by washer111 ()  
Thats an interesting little device you speak of. I suppose you could always add one to any mechanical timed dishwasher then, if the results weren't too good, couldn't you?
Like on BOL models like the Asko's I always ramble about, you could make a "HEAVY" switch, and use that, but watch out that it doesn't overfill the machine :)
GE had a close to TOL dishwasher with controls on it to vary the wash time, the dry time and maybe something else. Each little dial went from a few clicks to the left of Normal to decrease the time to a few clicks to the right of Normal to increase the time. It was in the early 70s and I looked at it in a department store so I don't remember it very well.