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.

http://img716.imageshack.us/img716/9137/rodi.jpg

In mine waste water and good water is opposite the pic

or not wtf do I know

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

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.

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.

How old or new are the filter media?

Know any body with another TDS meter too verify your readings

+1 looks like you're running DI into the membrane(still doesn't explain 300 tds)

I had this exact problem with mine and after some tinkering I bought a brand new vertex rodi unit fixed the problem