Reverse Osmosis Question

[shanealanbeaty]

I recently aquired a Coralife Pure-Flo II TFC Reverse Osmosis Filter-2 canister-50 gallons per day. It seems to work great, but I have an air leak that makes an annoying hissing sound, somewhere after it passes the membrane. It is either IN the RO clean water line connection, or the waste water line connection. I tried spraying water on the connections, and could not find a leak. I was also under the impression that if I had an air leak, wouldn't I also have a water leak? The thing is it does not leak water. So I am definitely confused. Now I can get over the sound, but I didn't want an air leak to affect the performance of the unit. Has anyone else experienced this problem before, and should I be concerned?

 

[andywe]

I ahve that unit, and it does make noise without leaking. It does make a high pitches sound from the water pressure through the fittings, espescially in the membrane. Air get purged through the lines and out the outputs, so if no water is leaking from the fittings, then there isn't a leak.

If you have a pressure monitor/regulator, you could adjust your incoming flow to jsut above 65psi, and that may help reduce the noise.

It's just noisy.

 

[shanealanbeaty]

Thanks for responding. It makes me feel a lot better. I actually got the unit brand new, but when I connected it to water it wouldn't work. So after taking it apart, I realized that ther was not a hole for the incoming water to enter the unit, so I had to drill one. It works great now, just noisy.

Thanks

 

[poolkeeper1]

I think you may have drilled out the flow restrictor, This is what lets the right amount of water for your membrane through the line??? You should not have to drill anything for the unit to work. Hope I'm wrong but you might want to check where your flow restrictor is on that one!

 

[shanealanbeaty]

I took it apart and studied it diligently. I was very hesitant at first, but after multiple attempts at hooking it up and nothing happening, I realized that no water was able to enter the unit. Right were the water intake line enters the unit was solid. So that is when I made a small hole.

 

[shanealanbeaty]

I took it apart and studied it diligently. I was very hesitant at first, but after multiple attempts at hooking it up and nothing happening, I realized that no water was able to enter the unit. Right were the water intake line enters the unit was solid. There was no way for water to enter. So that is when I made a small hole.

 

[andywe]

If it was brand new I would have suggested returning it, but it sounds like you drilled the white guest style elbow connector where the 3/8 yellow lines comes into the prefilter, correct?

 

[shanealanbeaty]

I did buy it brand new, but off this couple for $50. So I couldn't return it. Right after where the intake elbow fit in to the unit, there is a small chamber. The chamber was completely sealed off from the prefilter. No matter what, water could not enter the unit. So after I took the unit apart and saw how it worked, it seemed obvious that there had to be a hole there.

 

[andywe]

hmm, just as long as that hole did not go all the way to the inner chamber your fine. Sounds like you saw it's engineering and adapted it