Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: DaveG on February 20, 2012, 07:28:24 pm
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After using the Merlin for the last 6 months, weve got through 6 bags of resin and its time to get rid! Our tds from tap is around 220 and the Merlin gets it down to 44 , which is pumped at 75 psi..(even after changing membranes..another 150 quid).
How you guys get tds down to 7 is beyond me!
Any suggestions on a better ro unit guys?
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quite simply a 40/40 is the next step ;)
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Cheers Franky, do you use one? If so what one, do you have a linky?
Cheers
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you need one of these ;)
http://www.vyair.com/scripts/prodView.asp?idproduct=129
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yes i use a 40/40 from x-line,brought second hand from a bloke who didnt have a clue ;) ;D
tds in 390 down to 17 before di,at psi 55,doing a bout over 150ltrs ahour,ive brought a booster pump but not fitted it in yet as 40/40 is in downstair down for the winter and no room left,so waiting til it goes back out side
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how long does the membrane last on a 4040 compared to a merlin and do u need any pre filters ?
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you need one of these ;)
http://www.vyair.com/scripts/prodView.asp?idproduct=129
Yep, the vyair ones are very good. I've got the 400gpd pumped one, MUCH better than my old merlin & produces water almost as fast:
http://www.vyair.com/scripts/prodView.asp?idproduct=96
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A bag of resin every month, you must use an awful lot of water. I have a merlin which gets my tds down to about 35 most times and I guess I use one bag a year
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40-40 RO is the way to go, I put a new membrane in mine 12 months ago (last one was in for 5 years) we check it every week, takes water from 280 to 007. I've also fitted a 35" DI in line before it goes into 2 x 1000 ltr holding tanks which takes it down to 000. The resin in there have been in for around 6 months and still gives 000. Waste water ratio is around 1:1
All I have in the vans now is a tank, pumps and small DI's for piece of mind, the guys fill up at the end of each day and the 2 holding tanks are full again by the morning.
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After using the Merlin for the last 6 months, weve got through 6 bags of resin and its time to get rid! Our tds from tap is around 220 and the Merlin gets it down to 44 , which is pumped at 75 psi..(even after changing membranes..another 150 quid).
How you guys get tds down to 7 is beyond me!
Any suggestions on a better ro unit guys?
At 44ppm you will be getting through 13000 Litres per month :o
Are you sure of your figures, thats an awful lot!
If so then you need an industrial unit.
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How often do you change the filters Nathanael?
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How often do you change the filters Nathanael?
Ya,... I must remember to do that,... ;D ;D ;D ;D
18 months & I've changed the pre-filters twice. I don't use a lot of water though.
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After using the Merlin for the last 6 months, weve got through 6 bags of resin and its time to get rid! Our tds from tap is around 220 and the Merlin gets it down to 44 , which is pumped at 75 psi..(even after changing membranes..another 150 quid).
How you guys get tds down to 7 is beyond me!
Any suggestions on a better ro unit guys?
At 44ppm you will be getting through 13000 Litres per month :o
Are you sure of your figures, thats an awful lot!
If so then you need an industrial unit.
We use approx 4000 litres a week ???
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Looks like i will be getting a 40 40 when i need to replace my merlin filters then.ive had the filters in it a year now and there still ok.
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try an ez pure commercial ro
http://www.cleanitup.co.uk/smf/index.php?topic=147725.0
and let clarkey know what you think of it :D
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Lol ::) ;D :D ;D :P
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:D