Extreme Typhoon III 150gpd

[reeferRob]

Yeah we also have high clorine, to the point you can smell it

[BuckeyeHydro]

OK - so it looks like your membrane is showing a 99% rejection - that's unusually high so I wouldn't be surprised if there is somthing a little off on your meter.

Your DI should be 0 or 1.

Try using the DI cartridge from your Kent system and see if it lowers the DI to 0 or 1 ppm.

I'd jack up your pressure to 85 psi.

Your waste to permeate ratio is 5:1.5 or 3.3:1 - which is ok.

Other than your DI, system looks like it is running OK.

Russ

[alton]

My experience with DI, when I used a Kent R/O/DI I got an average of 100 gallons before my DI cartridge was spent. I then switched to another company with chloramines blasters and my DI lasted me for a grand total of 200 gallons. I had spoke with others using the same RO/DI filters and theres where lasting 750 to 1000 gallons between changing. So what is in my water because my TDS runs around 200? Because of the expense I quit using DI years ago and have changed to where I use a 1 micron, then 2 chloramine filters, and then another 1 micron filter before it goes into the membrane and the TDS comes out at 2 with my 100 gpd system.

[Bill S]

Chloramine is hard on a RO/DI system. Here in SA, they don't use it - yet.

[BuckeyeHydro]

My experience with DI, when I used a Kent R/O/DI I got an average of 100 gallons before my DI cartridge was spent. I then switched to another company with chloramines blasters and my DI lasted me for a grand total of 200 gallons. I had spoke with others using the same RO/DI filters and theres where lasting 750 to 1000 gallons between changing. So what is in my water because my TDS runs around 200? Because of the expense I quit using DI years ago and have changed to where I use a 1 micron, then 2 chloramine filters, and then another 1 micron filter before it goes into the membrane and the TDS comes out at 2 with my 100 gpd system.

Could be a number of things we can check for pretty easily if you'd like (e.g., bad membrane, bad membrane housing, high CO2, chloramines). So we don't hijack Rob's thread, do you want to email us?

Russ

[reeferRob]

You are welcome to continue in this this thread, it can only benefit all of us in figuring out the in's and out's of RO/DI.

OK - so it looks like your membrane is showing a 99% rejection - that's unusually high so I wouldn't be surprised if there is somthing a little off on your meter.

Maybe I'm not really understanding the 99% rejection. I assume that means that my membrane is doing unusually good and is rejecting 99% of the TDS?

Your DI should be 0 or 1.

Try using the DI cartridge from your Kent system and see if it lowers the DI to 0 or 1 ppm.

My DI does read 0 for the first 300-350 gallons, right now it is spent and has changed from blue to yellow and needs replaced, that much i know.

I'd jack up your pressure to 85 psi.

Intructions say 75psi max, is 85 ok?


Man I have to say, you have been a tremendous help in helping me to understand this RO/DI thing, and I guess as much as I don't want to hear it, it seems it's a give and take thing. More gpd=less filter life. I will retract my statement of the Typhoon being a rip-off and just say, I wish I had known before I put out the money for a 150gpd system.


Thanks Russ!


Rob

[BuckeyeHydro]

right - your membrane is rejecting a very high percentagfe of the tds in the water.

Let's say your tap water read 100 ppm TDS
If your RO water read 5 ppm, then you have a 95% rejection rate.

Are you on well water?

Can you get me measure of your pH and alkalinity of your RO water? With that info we can see if you have high co2.

Does you water contain chloramines?

Russ

[reeferRob]

No well water, but I do live in the country, not sure if it has clorimines. Would a pool clorine test kit measure that?

I can get you the ALk and PH of RO water tomorrow evening. I assume by RO water you mean before the DI?


Rob

[BuckeyeHydro]

Right.

You can give your water utility a call and ask them if they use chlorine or chloramine as a disinfectant.

Russ