Originally Posted by Trim50
My product output is between 20-25gph at 800psi using 50-56amps/12V...about what I expected.
I just ran across this thread and I'm wondering if there is a typo above.
According to Hydra Cell the F20X pump will deliver just under a gallon per minute or close to 60 gallons an hour. A 20 gallon per hour permeate flow would be a 33% recovery rate. That recovery rate seems quite high and still produce a low TDS.
I am a few days away from pulling the trigger on a F20X pump with a 2540 membrane or an F20E pump with a 2521 membrane. In theory according to Dow's ROSA software, neither combo will work properly. But, there are a number of published cases where an F20E and a 2521 membrane deliver 20% recovery rates with low TDS.
Dow wants at least 1 gallon per minute of concentrate flow out of the 2540 membrane. That concentrate flow can't be reached with a F20X pumping 1 gallon per minute in. How is your 2540 holding up with less than recommended concentrate flow rate?
Any further operational details on your watermaker is appreciated.
Very nice installation, BTW.