Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Brownie10 on October 28, 2008, 04:33:58 pm

Title: 320ppm IN 38ppm OUT
Post by: Brownie10 on October 28, 2008, 04:33:58 pm: Just fitted my merlin today (second hand). The reading before going in to the di vessel was 140ppm (from mains of 320ppm) but I let it run for about 10 mins and now its 38ppm. Is this good enough?

I ask because I dont want to start using my resin until i know thats the best (ish) I can get for a hard water like mine.

Any advice would be much appreciated.
Title: Re: 320ppm IN 38ppm OUT
Post by: AuRavelling79 on October 28, 2008, 04:52:14 pm: Seems high to me - my ro-man is 400 in and 10 out before the DI.

My DI (10") vessel starts at 000 and I run it until it reaches about 008 and then change the resin. This vessel goes thru a second one which I change at 003.

When my membranes get tired they creep up to about 20 and then I change them. Once a year for me.
Title: Re: 320ppm IN 38ppm OUT
Post by: MSTAV on October 28, 2008, 05:03:29 pm: my merlin is the same mate. dead on 38ppm before di, and 410ish ppm before ro. I asked the same question a while ago and it seems to be the norm with merlins.

Mike
Title: Re: 320ppm IN 38ppm OUT
Post by: Steve Weatherley on October 28, 2008, 05:06:15 pm: I have a merlin and am getting the same readings as you. My input from the tap is 380 ish
Title: Re: 320ppm IN 38ppm OUT
Post by: Brownie10 on October 28, 2008, 05:15:58 pm: Thanks for the help everyone

Did you guys have a problem when it came to polishing it then. As in, you are going through a lot more resin?

Also how do you know when the membranes need replacing. Is it just a gradual creep up of your ppm before the di vessel.....
Title: Re: 320ppm IN 38ppm OUT
Post by: Brownie10 on October 28, 2008, 05:18:17 pm: Is it even possible to get it to 000ppm in our case (hard water and merlins)?
Title: Re: 320ppm IN 38ppm OUT
Post by: MSTAV on October 28, 2008, 05:19:32 pm: i have had mine nearly a year now and havn't had to change a thing and i pure 400 litres per night. change resin every 2-3 months so quite quick i guess. thats using 2 di vessels

mike
Title: Re: 320ppm IN 38ppm OUT
Post by: Brownie10 on October 28, 2008, 05:22:27 pm: I should be okay then :)

Out of interest why is it that you have two vessels?
Title: Re: 320ppm IN 38ppm OUT
Post by: dmlservices on October 28, 2008, 05:30:55 pm: hi brownie
should have gone for a ro man with your tds mate, mine is around 320-350 in , 004 out , looked at the merlin but was advised not to go with it, produces water quick , but apalling waste to product, and does not bring tds down enough- costing a lot more in resin changes. after going through di, mine comes out at 000, and resin lasts ages.

daz
Title: Re: 320ppm IN 38ppm OUT
Post by: Brownie10 on October 28, 2008, 05:36:37 pm: What model did you get, and how much was it?

Got work but not in a hurry, so could still sell it and change systems if its worth it...
Title: Re: 320ppm IN 38ppm OUT
Post by: [GQC] Tim on October 28, 2008, 05:44:46 pm: Sounds about right, I've always been told that Merlins are great for producing water quickly, but are not as effective in removing impurities, hence the higher TDS.
Title: Re: 320ppm IN 38ppm OUT
Post by: dmlservices on October 28, 2008, 05:46:17 pm: hi
i went for a 200 gpd unit , it feeds into a 1000 ltr ibc, my van tank is 500 ltrs,and i never run out of water, ro man sell them , depending on your water usage you can get same or go bigger.
www.ro-man.com .

daz
Title: Re: 320ppm IN 38ppm OUT
Post by: Frank pole on October 28, 2008, 05:55:29 pm: I was getting 426 in & 39 out from my merlin setup so I sold it on ebay! I bought ro-man kit and the last time I checked I was 423 in & 9 out.