Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Rogue Trader on January 18, 2008, 05:49:51 pm
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I have a TDS of 4 after my first DI bottle and TDS 0 after my second DI bottle .... so i have deduced that resin in DI bottle 1 needs changing .... but do i then swap them over so DI 1 (with fresh resin) is in DI bottle 2 position or leave them the original way round ???
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wait a couple of weeks then change both mate
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are you serious? .... isnt that just overkill?
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Don't change it yet the TDS is still too low, save some money! I change my first bottle at 80 TDS as my tap water is about 90 TDS. 0ppm will still be coming from the second bottle. Then bottle two becomes bottle one and the fresh goes in position two! I run a DI only system. ;D
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wait a couple of weeks then change both mate
why thats throwing money away???
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it isnt if your tds is 378 from mains mate trust me you are lucky!!!
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my TDS is around 350 fron the tap and 20ish after merlin
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my tds is 30 up here in scotland. looking forward to setting my self up.
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I dont know what tds RO people change their resin on but my vessel lasts about 8/19 weeks. I let the resin climb to the same level as the tap because then I know my resin is completely exhausted.
Maybe it makes sence that if your merlin is producing 20 ppm then change your resin then?
Is there any point in having a two vessel system on a RO system?
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my TDS is around 350 fron the tap and 20ish after merlin
What I would do is test the TDS after the RO. If it's higher than the TDS of the water coming out of DI1, don't change anything as the resin in DI1 is still doing something. I don't change DI1 until TDS after RO = TDS out of DI1. However, these tests should not be made shortly after the water flow restarts. Wait till it's been going a while because some ROs produce a higher TDS for a few minutes when they've been standing a while.
Throwing away the resin from DI1 if it's still doing something is wasteful IMO. Bear in mind that once the water out of DI1 starts producing a reading >000, it won't be too much longer before it needs changing anyway. Having a DI2 just saves me from having to change things around immediately if I'm too busy or can't be bothered.
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wether RO is used or not, the first vessel shouldn't be changed untill it's output tds reaches the same tds of the output before it, or you're wasting resin.
Have you given the resin a good shake to lower the tds?
tony
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I have a TDS of 4 after my first DI bottle and TDS 0 after my second DI bottle .... so i have deduced that resin in DI bottle 1 needs changing .... but do i then swap them over so DI 1 (with fresh resin) is in DI bottle 2 position or leave them the original way round ???
if it is only 4 leave it, when your second strats to rise change first to fresh resin, put the second one in where the first one was, and the fresh resin will then be where your second vessal was
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my TDS is around 350 fron the tap and 20ish after merlin
What I would do is test the TDS after the RO. If it's higher than the TDS of the water coming out of DI1, don't change anything as the resin in DI1 is still doing something. I don't change DI1 until TDS after RO = TDS out of DI1. However, these tests should not be made shortly after the water flow restarts. Wait till it's been going a while because some ROs produce a higher TDS for a few minutes when they've been standing a while.
Throwing away the resin from DI1 if it's still doing something is wasteful IMO. Bear in mind that once the water out of DI1 starts producing a reading >000, it won't be too much longer before it needs changing anyway. Having a DI2 just saves me from having to change things around immediately if I'm too busy or can't be bothered.
\nice one Shiner this makes sense ;D
Its funny because i was gonna ring you to ask this question but i lost your number ;D
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tds 4????? why worry ;D ;D
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I have just changed every freeking filter to get mine down to 001 ppm
and even then I have been throwing a wobley
Now I am confusse I got 3 filters on my R\O do the not have to go in order?
also have a DI after the R\O is this the correct way of setting it up?
Man I am still learning and it does my nut in
Thank god you guys are here
Thanks J
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I have just changed every freeking filter to get mine down to 001 ppm
and even then I have been throwing a wobley
Now I am confusse I got 3 filters on my R\O do the not have to go in order?
also have a DI after the R\O is this the correct way of setting it up?
Man I am still learning and it does my nut in
Thank god you guys are here
Thanks J
What's your tds before the DI? You may just need a bigger DI after the RO if you are in a very hard water area.
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Hi yeah it was about 80
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jago are you havin a laff??? is he havin alaff ??(In scouse accent a la extras)
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sorry mate i was p888sig about thought you wer joking is it 080 after ro? if so bigger di or change of filters i just put mine back on in order they came off orig (ro man?) if you can get001 no prob i use up to 005 regular its ok sediment filter is always first to go my tap tds about 380 to 400
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80 after the RO?????? even in the worst hard water area you're output after the RO should not be more than 20 or 30. Mine is 4 after the RO!!
Something is seriously wrong there!!
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ok will have to check but in the moaning
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my TDS is around 350 fron the tap and 20ish after merlin
What I would do is test the TDS after the RO. If it's higher than the TDS of the water coming out of DI1, don't change anything as the resin in DI1 is still doing something. I don't change DI1 until TDS after RO = TDS out of DI1. However, these tests should not be made shortly after the water flow restarts. Wait till it's been going a while because some ROs produce a higher TDS for a few minutes when they've been standing a while.
Throwing away the resin from DI1 if it's still doing something is wasteful IMO. Bear in mind that once the water out of DI1 starts producing a reading >000, it won't be too much longer before it needs changing anyway. Having a DI2 just saves me from having to change things around immediately if I'm too busy or can't be bothered.
\nice one Shiner this makes sense ;D
Its funny because i was gonna ring you to ask this question but i lost your number ;D
Glad to hear you got it sorted out. Number is 01293 545413.
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Shiner do you run RO then a DI and then another DI ????
My RO has three pots and then one of them the last one has resin in it looks just like my DI is this correct?
Propper confussed
regards J
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I don't change the resin until the 2nd di tank has a reading of 5.