Ro system help

[StevenSeas]

So I need some help/advice on my ro system.

It's a 100gpd system that I am lucky to get 25gpd out of. I have narrowed it down to psi and here are my readings when it dead ends into the pressure gauge

From source 60 psi
Inlet to ro 60 psi
Exit from dual sediment chambers (new cartridges) 60 psi
Exit from carbon (new cartridge ) 52 psi - probably should go to a larger pore carbon

When I let the sysrem run as normal for production my;
psi after sediment is 40 psi
Psi after carbon is 35 ish with fresh carbon block it usually is 40 psi

So my question is when the unit is running what's causing the 20 psi drop? Or where should I troubleshoot next?




Sent from my SM-P600 using Tapatalk

[Davie118]

Is your second set of numbers what happens over time throughout the day? What do you mean "when I let system run as normal?"

Have you ever had high production out of it? My unit never produced what it should but I always assumed it was because I probably needed a booster pump. I might get 10 or so gallons in 8 hours with mine and it is a 75 gallon. That is only when everything is new. After 3 months my system needs new prefilters. I guess my water quality is really bad too.

[alton]

Are you getting 1 gallon R/O to 4 gallons waste?

[leliataylor]

How old is your Filmtech membrane?

[StevenSeas]

I hadn't even thought of checking the waste to product ratio, but started a comparison a little bit ago so we shall see.... apparently in 10 min I produced about 4.5 gallons of waste water holy cow! And for all that I didn't get but a little under a quart. So not at all where the waste to product ratio should be. But is that due to low pressure or is something causing that bypass resulting in low pressure?

The second set of numbers is if I am to run the system for water production with the psi gauges in line vs having the water terminate at the psi gauge.

It used to get about 4- 5 gal an hour or roughly 100gpd

The membrane is probably close to 2 years but I can't be positive.

[Davie118]

well maybe the gauges could use some cleaning. I do not know how long you have had the system but maybe deposits accumulated in the gauges that ads some blockage only when in line. Just a thought. I am assuming that you run your ro a lot so the membrane has not been sitting for more than a month at a time.

[BuckeyeHydro]

I believe what you're seeing is the difference between dynamic gauge pressure and static gauge pressure.

Russ

[devildog1986]

The only other thing I can think of when not getting the full amount is temperature. You will produce more in 85 degrees, than 75 degrees. However, I dont know how much of a difference it would make in your final product. Normally, the sediment filters reduce psi when its time to replace them. at least, that was one of my indications. PPM would be second. Good luck!

[glarior]

So I need some help/advice on my ro system.

It's a 100gpd system that I am lucky to get 25gpd out of. I have narrowed it down to psi and here are my readings when it dead ends into the pressure gauge

From source 60 psi
Inlet to ro 60 psi
Exit from dual sediment chambers (new cartridges) 60 psi
Exit from carbon (new cartridge ) 52 psi - probably should go to a larger pore carbon

When I let the sysrem run as normal for production my;
psi after sediment is 40 psi
Psi after carbon is 35 ish with fresh carbon block it usually is 40 psi

So my question is when the unit is running what's causing the 20 psi drop? Or where should I troubleshoot next?




Sent from my SM-P600 using Tapatalk

Had same issue. Add booster pump. Maintains that pressure eapecially through the membrane. Ever since I added mine ive been very happy. Maybe someone has one you can test to make sure.

[BuckeyeHydro]

Again - I believe what you're seeing is the difference between dynamic gauge pressure and static gauge pressure.

Can you tell us how you tapped into your home's plumbing to get water TO the system?

Russ