RODI Issue?

[Molter]

Hey y'all,
I just purchased a Kent Marine Hi-S Maxxima 60 GPD RODI kit from someone who was getting out of the hobby.
The thing is in good shape, albeit a little dusty, and the filters are pretty clean.
That said, I just used it for the first time and from my blue line, I had an output of roughly 3x-4x the wastewater from the blue line.
My PSI from my faucet on max was about 35 PSI.
From everything I've read, they work best at around 50-60 PSI, so this is definitely low.
However, I'm not sure that having lower than ideal water pressure would lead to less waste water.

Any ideas?
Also, I'm not sure that I should use the 60 gallons I made, especially since the TDS filter needs a new battery so I can't verify the purity of the water made.

Any information or perspective y'all can provide would be most helpful.

Thanks.

 

[Opus123]

At that pressure you will be very inefficient but will still get good water. Ideally you should buy a RO pump and get it up to 80psi. As for keeping your water, you need to get batteries for your TDS meter and see what the tds is of the water you made. Depending on the age of the filters and how much they were used you may need to get new ones. You will need to get the TDS meter working and give us some readings. We need the tds of the water out of your faucet and then the tds after the RO membrane and then the tds after the DI filter.

 

[mcgyvr]

An RO/DI unit will always "waste" more water than its making..
Typically you get 1 gallon of good water and have 4 gallons of waste water..
If you are seeing the opposite (hard to tell from your description what the problem really is as you just said blue line.. blue line) then you have the waste and good hoses switched..

35 PSI is low and you should expect it to be even less efficient.. but its not "horrible"
If you can't verify the TDS of the water is making then don't use the water until you can.. Filters could be bad, you could be using waste water vs good water,etc...

 

[Molter]

An RO/DI unit will always "waste" more water than its making..
Typically you get 1 gallon of good water and have 4 gallons of waste water..
If you are seeing the opposite (hard to tell from your description what the problem really is as you just said blue line.. blue line) then you have the waste and good hoses switched..

35 PSI is low and you should expect it to be even less efficient.. but its not "horrible"
If you can't verify the TDS of the water is making then don't use the water until you can.. Filters could be bad, you could be using waste water vs good water,etc...

Very sorry, I was half passed out when I wrote this.
The blue line is the good one and the orange line is the waste water.
lol, I quadruple checked.

 

[xREEFINaintEZx]

I got the same unit I think.Your gonna want to get that psi up for sure. For the brine or "waste water" look into membrane staging if the amount of waste bothers you. If staging looks like something your interested in you will have to get the booster pump.

https://www.google.com/url?sa=t&sou...CBwwAQ&usg=AFQjCNF1sHlk2z9QIx28jtvfnGP_UlkifA

 

[xREEFINaintEZx]

Bad link... Just type in "membrane staging" in google and go to videos... It's the BRS 150 gallon upgrade video.