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frank2926

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AFTER I STARTED USING MY WATER I FOUND IN THE DIRECTIONS THAT I MUST PURGE UNIT WITH DI UNIT DISCONNECTED FAILURE TO DO SO WILL DAMAGE DI UNIT , I RAN IT FOR ABOUT 2HOURS WITH DI UNIT HOOKED UP. SHOULD I REPLACE DI UNIT OR HAVE I JUST SHORTENED THE LIFE SPAN.
 

Len

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You've either exhausted some or all the life from the DI, most likely the former. RO units take time to "spool" once you install a new cartridge, and that's why they recommend you not use the DI unit unil the RO membrane breaks in. I'm sorry but I can't really tell you if the DI is still usable.

WELCOME TO REEFS.ORG! :P
 

ChrisRD

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IIRC there is some type of preservative on the new RO membrane that you're trying to flush out before you use any of the product water.

If you have a TDS meter, test your product water (with the DI hooked up). If your TDS levels are at 0 ppm I wouldn't worry about it. If you ruined the DI cartridge you'll probably show at least a few ppm TDS in the product water.

Most likely you just shortened the life of your DI cartridge - not really a big deal IMO.
 

frank2926

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thats exactly what the manufacture said. They said it is a common mistake
and that they have run a unit without purging several times and tds still test 0 ........the final answer was that i shortened the life
thanks for the help
 

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