[tompoole]

anyone help.

 got a tds of 0.06 and only been running less than a week. made about 600 litres. comes out ro at 30 then di at .06 was 0.00 first couple of days then 0.01 disconected and bought ro and di indoors for a couple of days now it .06 what a pain got a full week next week and can't make any water looks like i'll be back to trad for most of it and only wfp the conservatory roofs and  gutter facias.

[russ_clark]

your resin must be shot mate
get some new resin
(try giving your DI vessel a good shake it might help short term)

[philboy]

I'm with Russ, change ya resin.

[tompoole]

after one week !!

[tonylee]

hi.
did you fill thr resin vessel? I am told it can channel if not packed in well enough.
a good shake may help but I would refill packing it a lkittlr tighter this time
tony

[Peter Fogwill]

after one week !!

Tompole, what kind of RO have you got? Is it a Merlin by any chance?  If not how many GPD is it?

The 30 reading is a bit high unless it is a Merlin, they are always high.

How big is the DI vessel?

Peter

[tompoole]

hi

200gpd from purefreedom and the di i would est at about two litres

how long should they last?

Just checked it liiks the same as man ro and a small 700ml di unit prob the smallest.

[Peter Fogwill]

hi

200gpd from purefreedom and the di i would est at about two litres

how long should they last?

You will probably find that your DI is the 3/4 L vessel.  They are usually hard on the DI from new as the system cleans itself out when you first run water through them.  I usually send a replacement resin FOC, if the resin runs out fast for this very reason.  I am a bit concerned about the 30ppm in reading from the RO this is way to high.  I think you could have a rouge membrane in there, but first I would check the two  housings to make sure both have membranes inside, they might have missed one, I have done that in the past.

Peter

[Peter Fogwill]

If you have membranes in the housings, take out each pipe from the RO vessels from the bottom, not the side which opens, the pipe nearest the middle of the housing and test the water.  This way you will see if one of the membranes is not working properly, and you can phone up for a replacement.

Peter

[dave0123]

I have a purefreedom 300GPD RO and my tds from the ro is 24 thats from water tds of around 350 370 .

[Peter Fogwill]

Dave, what sort of waste to product ratio do you get?

Peter

[dave0123]

am not sure peter.

i have a booster pump thats with the tds at 24 without it was 30 as well. i waste is quite alot i think its around the 50/50 or 50 pure 75 waste

[tompoole]

hi peter

1st one reads 330 2nd one reads 360 and the final reding is 41 so i guess its the sec ond membrane is shot

cheers

tom

[Peter Fogwill]

Thanks dave, do you know if pure freedom put the systems together themselves?  

I was thinking they may have adapted them to produce less, waste that is why I asked.  If they do then I think they may be sacrificing low tds from the membranes to save on waste water, as they seem to be running at about 94% productivity on the membranes, instead of the 98% you normally get.

If that is the case then tompoole's system will probably be working the way it is meant.

Peter

[Peter Fogwill]

hi peter

1st one reads 330 2nd one reads 360 and the final reding is 41 so i guess its the sec ond membrane is shot

cheers

tom

Tom you must be taking the reading from the wrong end, or the wrong pipe.  It is the end with two outlets, and if you look closely one of the outlets are nearer the outside of the tube, and one nearer the middle.  It is the one nearer the middle you want to take the reading from.  The reading should be around 30.

Peter

[alanwilson]

when you turn the ro on make sure you run off the first 5 litres or so before the resin as this will have a very high tds thus knackering the resin very quickly.

I don't know why anyone buys these little 200gpd units, they're not built for the job.

[Peter Fogwill]

Alan I would have to disagree, I think they are ideal for the job.  I have thousands of them out there producing more than enough water for their owners daily needs, and all for less than £50 per year running costs.

Peter

[tompoole]

Hi peter.

they all read 37.  bought the system that andrew mccann @ purefreedom recommended. every one else on here seems to speak very highly of him and has been  good to his word so far and very help ful. I will give him a call mon. I think from the advice i have recieved it must be the resin is totally shot.

thanks for the help
peter do you supply wfp products then?

tom

[Peter Fogwill]

I am not saying anything is wrong with it tompoole, I am just saying that it may be set up differently.

The readings are consistent so nothing wrong with the membranes, and yes you definitely need to replace the resin.  You will find that your next lot of resin will last longer than the first.

Yes I do sell products, my site is at www.window-tools.com

Peter

[alanwilson]

sorry peter but assuming normal home pressure of 50psi and water temp of 8c you're aren't going to get anymore than 300ltrs a day from them. 

You say they're providing more than enough water, I reckon the customer has just got used to having such a small amount of water to use each day.

Simple fact, the more water you use the faster you can go, doing a better job.