HI Mike
I could write a thesis here, but probably best to look at Chestermikes youtube video of one in action.
Basically the tub tumbles in one direction whislt the pulsator spins in the opposite. The dominant wash action is a tumbling one, with the pulsator sending oppsoing currents through the wash. It doesnt seem to tangle nearly as much as the twin tubs can. And in practise we've not found the load any more tangled than any modern front loader.
As for the water level, the tub drops and tilts as it fill, so that the pulsator is just under the water level, and the water is just below the lip of the door. I'd say the correct level is about an inch higher than this photo.
Remember the pulsator isnt used in all wash programmes and not for all of the washing and rinsing sections of the cottons programmes.
The other point worth noting is that it doesnt just fill, heat all that water, wash for 4 minutes and pump it all out, there is an intitial heating up to a fixed temperature, I think about 60 for the 85 degree wash, it then alternates 2 min tumble only with 2 min heating until it reaches the wash temperature, then the pulsator kicks in and away it goes, so the overall wash action is more like 12 minutes tumbleing followed by four minutes tumbling and pulsating for four minutes.
Sorry Ive already waffled on too long, I hope I havent just told you what you know, but I think Mike has done the best explanation with his film.
