Yes -- absolutely. That's what it's designed to do. You set the dial for the ppm-level that you want, then plug it in. When the ppm-level is reached, the generator turns itself off (even though it is still plugged in to electricity). Does yours not do that? What number do you have the dial set for? MA
________________________________ From: Golden Aldi [email protected] And if I understood correctly, when the green light goes off on yours, then it stops brewing? Even though its getting electricity? Do you think the generator turns itself off? On Thu, Feb 25, 2010 at 3:26 AM, MaryAnn Helland <[email protected]> wrote: Hi Aldi. I think you might have the same unit I do, but mine is pretty old and is only called the Colloid Master AC. On mine, the green light is what goes on when the unit is making CS. When it has reached the ppm-level desired, then the green light goes out. But the yellow *testing* light (underneath the start button) remains lit, which reminds you that the unit is still plugged in. And I believe that light blinks when the unit switches polarity. That yellow light goes out when you unplug the unit before removing the clips from the silver bars. My unit has no red light, but it does have the switch that allows you to choose between standard brewing time and fast. Mine is always set on standard. Does any of this help you? >MA > > > > > > > >

