Vertex Puratek RO Unit Questions

[Madreefer]

Yes it has a built in TDS meter but it has not worked from day 1. After my resevoir is full and the unit is no longer making water the TDS meter eventually climbs up to 50PP within a couple of hours and stays that way even after it does it's 30sec flush. Which is why i'm always unsure on the cartridges or membrane. The valve that the TDS meter plugs in to used to be before the DI canister. I have since moved that valve so it is between the outflow of the DI canister and my resevoir. The DI should be the final stage that filtered water flows from, correct?

[mike31154]

Your unit is rated for whatever membrane is in it, whether you put in a 50, 75 or 100. But as mr alberta mentioned in his post, when you change membranes to a different rating, you also need to get the appropriate flow restrictor, unless you have one of the newer adjustable flow restrictors which allows you to tweak the flow to match a certain membrane. A system with mismatched membrane & flow restrictor will work but not at its rated efficiency.

[Madreefer]

Thanks all! I dont see a flow restrictor on it. I decided I will change all of the filters except the membrane.

[albert_dao]

Here's a video I made a bit back about the restrictor valve:

http://s215.photobucket.com/albums/c...ictorValve.mp4

[Madreefer]

Thanks Albert! So is ok that I changed where my TDS meter is located?

And another question as well as a change of topic.
I have a Alpha Cone 250, I noticed in pics and a vid you have that there is a white adjuster thing on the end of the Red Dragon pumps. What is it for and is this something I should look in to? I have one of the first skimmers that came in to Canada so I guess it's an older version.

[albert_dao]

Jeepers, lol. I wish you were local!

Give me a call tomorrow and we'll go through all this in detail

[mike31154]

Originally Posted by Madreefer

Thanks all! I dont see a flow restrictor on it. I decided I will change all of the filters except the membrane.

In another previous post you mentioned something about finishing a 30 second 'flush'. How is that done? If your system has a manual flush valve, it's possible that your restrictor is incorporated as part of that valve, that's how my system works, restrictor & flush valve in one unit. There should also be a one way check valve somewhere in there, I just don't recall where that's located, somewhere close to the membrane housing IIRC.

[Madreefer]

Originally Posted by mike31154

In another previous post you mentioned something about finishing a 30 second 'flush'. How is that done?

I don't know how it works. This unit has a little computer that is programmed to do an autoflush every half hour for 30 secs. I hear it come on and it does a countdown. Mine was a store tester so I think production models are on a different program for time. There is no flow restrictor that I have been able to find.

[mike31154]

Ya, sorry, my bad, I posted before watching Albert's video. Looks like your unit has the restrictor pushed into the end of the tubing. Have another look at the vid, it's just a small plastic piece by the looks of it.