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Old 05-19-2013, 07:07 AM
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Default RODI not doing what it's supposed to!

I got a ro/di 4 stage off a member here, with a tds meter. I hooked everything up (completely blind - never done this before) and everything seems to be fine - except the fact that my out tds is showing 350ppm.

So, I figured I had the waste water/good water lines reversed - changed them around, and I still have the same TDS readings.

Every line I change around, my tds readings are still high.

Am I missing something here? It's not rocket science.

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Old 05-19-2013, 07:24 AM
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In mine waste water and good water is opposite the pic
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Old 05-19-2013, 07:40 AM
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or not wtf do I know
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Old 05-19-2013, 07:51 AM
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Is that last filter on the bottom right a DI filter? If so, it should be last.

The water flow should be

1) sediment
2) carbon
3) RO membrane
4) DI

Here is a video explaining it.

http://youtu.be/Y0OeFInDFMk
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Old 05-19-2013, 07:53 AM
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Also if your unit has a back flush- you should do it for 30 mins or so.

300 TDS is really high. If you're in the lower mainland you should be at 8-20 TDS right out of the tap.
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Old 05-19-2013, 08:44 AM
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scherzo: it doesn't appear to have a backflush, I was looking to do this earlier. I've been running the unit for about 6-8 hours now filling up buckets, so it has had plenty of time to rinse out.

I also don't know if the bottom right is a DI filter. Though I should probably take it all apart and check! The way the system is put together, it doesn't seem as though the unit is put together the way that is described in the video.
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Old 05-19-2013, 10:01 AM
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How old or new are the filter media?
__________________
If you see it, can take care of it, better get it or put it on hold. Otherwise, it'll be gone & you'll regret it!
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Old 05-19-2013, 12:28 PM
11purewater 11purewater is offline
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Know any body with another TDS meter too verify your readings
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Old 05-19-2013, 12:38 PM
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Quote:
Originally Posted by scherzo View Post
Is that last filter on the bottom right a DI filter? If so, it should be last.

The water flow should be

1) sediment
2) carbon
3) RO membrane
4) DI

Here is a video explaining it.

http://youtu.be/Y0OeFInDFMk
+1 looks like you're running DI into the membrane(still doesn't explain 300 tds)
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  #10  
Old 05-19-2013, 01:40 PM
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I had this exact problem with mine and after some tinkering I bought a brand new vertex rodi unit fixed the problem
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