RODI carbon block help!

[Topreefer92]

Hi all so as usual no matter how much time in this hobby you always learn something new. So below I have included a picture of my RODI unti where the water is flowing into the carbon block but it is not filled there is air in there. The RO membranes are less than 6 months old and the sediment filter was just replaced and I have about 75-80 psi coming through the system. My question is this normal? I just have never noticed this before, everything seems correct.

Appreciate the help as always!!

 

[JoshH]

Hi all so as usual no matter how much time in this hobby you always learn something new. So below I have included a picture of my RODI unti where the water is flowing into the carbon block but it is not filled there is air in there. The RO membranes are less than 6 months old and the sediment filter was just replaced and I have about 75-80 psi coming through the system. My question is this normal? I just have never noticed this before, everything seems correct.

Appreciate the help as always!!

It is just trapped air, most likely from when you swapped out the sediment filter. It's not a huge deal as it is (the carbon block might exhaust unevenly over time) but if it bothers you you can remove the air by loosening the carbon stage housing as your system is running. You will see the air escape and the rest fill with water. Once the water gets the top, tighten the housing back up and you're good to go

 

[Topreefer92]

Hey! Thank you so much I could careless as long as it produces 0 tds effectively lol!! I will try what you said as I laid it on its side and it didn't do anything. Thanks for the help!!!

 

[JoshH]

Hey! Thank you so much I could careless as long as it produces 0 tds effectively lol!! I will try what you said as I laid it on its side and it didn't do anything. Thanks for the help!!!

Personally I would release the air, it's super easy to do and it will help extend the life of your carbon block. Yes laying it on it's side won't do anything and the only way to get rid of it is to bleed the air out through the top threads when they are loosened off a touch...

 

[Topreefer92]

@joshHthat totally worked thanks again!

 

[JoshH]

@joshHthat totally worked thanks again!

Any time! See, SUPER easy, this can happen with any stage except the RO stage and the fix is always the same

 

[MTBake]

This happens to my di stages once in a while. I do the same, loosen canister housing and tighten it back up. Works great.

 

[JoshH]

This happens to my di stages once in a while. I do the same, loosen canister housing and tighten it back up. Works great.

It's worth noting that in the case of the DI, releasing the air is not important to provide even consumption of the filters as the DI stage is inside an internal canister and the water will be forced through the DI stage evenly from the bottom up with the air trapped on the outside of this canister it has no effect on how evenly the resin is used so it can sit in there as long as you want it to.

 

[MTBake]

It's worth noting that in the case of the DI, releasing the air is not important to provide even consumption of the filters as the DI stage is inside an internal canister and the water will be forced through the DI stage evenly from the bottom up with the air trapped on the outside of this canister it has no effect on how evenly the resin is used so it can sit in there as long as you want it to.

It only happens on the final stage. I run 3 stages of di using the separate resins in the first 2 canisters and a mixed bed at the end. I know it isn't an issue. Just feel better making them all look the same, lol.

 

[JoshH]

It only happens on the final stage. I run 3 stages of di using the separate resins in the first 2 canisters and a mixed bed at the end. I know it isn't an issue. Just feel better making them all look the same, lol.

That OCD gets me too, every time