Also, my incoming water TDS is similar to yours. My membranes typically last 3-5 years. I’ll replace mine when rejection gets down to about 95%. I use a Spectrapure system.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
100 gpd is equal to 0.7 gallons per minute or 4.2 gallons per hour. These are the numbers you can expect if your pressure and water temperature meet the factory spec.Have an membrane problem. Changed Aquafx 100gpd membrane
and the 3 other filters. now Water production really slow. Usually it would take 15-20 min per gallon, now it’s taking 40 plus mins. I’ve made about 5 gallons of water since the change and it’s still slow. TDS are reading zero.
I was wondering if the membrane needs some kind of breaking in period.
thank you for your help.
Hi all, need your input.
As I mentioned above since I changed the membrane on my aquafx barracuda it now takes 42 minutes to make a gallon of water as supposed
to the usual 17 or so minutes. I called Aquafx and the rep said its probably due to cold weather. He said to call if it continues when the weather
moderates. It has been cold here in NYC, but 42 min seems a lot. I run the unit at about 55-60 psi. I was wondering what The forum thinks about this.
thank you very much.
If you have a booster pump, increasing the pressure to 80-90psi would help with your production rate. If not consider getting one.
Just using a membrane manual I just pulled (Down FilmTec TW30-1812-100HR) at 60 PSI you should get ~120 GPD or ~19L per hour (2.3 gallons). Running that at the same temp and increasing the pressure to 80psi would give you ~170 GPD or ~27L per hour (7.1 gallons). That equates to ~208% increase in permeate production.
Temperature also plays a role in this as well, but regardless of temp, your permeate production will increase with increasing pressure.