Spectrapure RO/DI not working?

[mynfel]

Hi all,
I purchased the MPDI-60 today at my LFS and I'm not sure if it's working properly. First of all, after letting it run over 2 hours (during setup - I was supposed to get 2 gallons of purified water to discard) I maybe had a gallon of purified water - that seems a little slow to me (lots of waste water coming out tho). I have a pressure gauge that says it's running at about 50 psi. Now following the directions I'm supposed to figure out the product rate - 135 ml/2 minutes, about 67 - 68 ml/min, and then cut the flow restrictor to 14 inches...well, after pulling out the restrictor I see that it's only 5 inches. This was a brand new system, but it looks like a pretty clean cut (at an angle). Maybe someone swapped theirs in the store or something....I will be contacts the LFS tomorrow about getting a new one, but I am a little irritated that this RO/DI is supposed to produce 60 gpd, and it looks like I will only barely be getting 25 gpd.
Any thoughts or suggestions would be much appreciated.
Thanks,
mynfel

 

[javatech]

what's the temp of your water if it's too low it can cut your output in half

 

[mynfel]

pretty cold I guess - LFS said to keep it cold...but I can try raising the temp....what's the best temperature?

 

[pyro383]

On most units the opt temp should be 72, so unless you live near the equator, your cold water line is going to be COLD. I am up in NY and my cold water line is 56. On the directions it should state the ratio. I know on mine it stated 1.6% loss per degree less than 72. Figure yours out. I have heard conflicting reports regarding teeing the hot/cold water line so that you have 70-72 temp incoming. People say that you get cruddy water from the hot water tank.