Micro 2 Questions

[jputney]

I have a Leader Micro 2. It is supposed to be rated for 220psi but the max I can get is about 192 psi. I see that other people have this same thing so I wonder if that is normal? Also I am thinking about adding a third membrane. Can anyone tell me what I will gain? Right now I can run 2% sap to 5.7% at a little under 1 gallon a minute. would the next membrane take me to over 8%?

[TomorrowRiverMapler]

I have a Micro 2 and can get 200psi max which takes 2% to 7.5% at 0.5 gpm concentrate. If I understand it correctly, a third membrane in series should double the sugar content from the second membrane but that's theoretical and reality would be something less than that. I'm only guessing but I doubt the existing pump would be adequate to support a third membrane.

[dcast99]

On my Micro 2, I usually run it at 200 psi and convert 1.8 % to about 6% with .75 gpm of concentrate. If I am getting above the head tank minimum level I can squeeze it a little harder to about 215 psi to get 7% but the gpm drops to about .5. The .75 gpm of concentrate matches the evaporators rate pretty well.

[nymapleguy607]

Problem is going to be running out of flow and fowling the 3rd membrane. I run 2-1/2 gpm on the concentrate side until I get to 7-8 brix and then squeeze down to 1-1/2 gpm to get around 12-14% concentrate.