Vertex Puratek RO Unit Questions

[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.