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cleantech-westmids

  • Posts: 72
TDS at 70 through RO?
« on: February 01, 2015, 03:09:43 pm »
Hi Guys. I hope all aren't suffering to much outside with the current weather. I'm in need of a litle advise please.

I have a 650litre hot water concept 2o system. I have had my RO for about 2 1/2 years now. Lately though I seem to be going through resin like the clappers (every 4-6-weeks - 11litre di vessel) My tds from tap comes in at around 250. Today I flushed and back flushed the system for around 30 mins each. My tds now comes in at around 70 through the RO before Di.

Am I assuming my RO membrane is buggered and needs changing? :-[  I know I'm probably going over old ground but, it's driving me mad!

Many thanks in advance for anyone that replies.

Cheers guys!

Craig

cleantech-westmids

  • Posts: 72
Re: TDS at 70 through RO?
« Reply #1 on: February 01, 2015, 10:21:54 pm »
C'mon guys can you help me out please?

Cheers

Craig

Don Kee

  • Posts: 4850
Re: TDS at 70 through RO?
« Reply #2 on: February 04, 2015, 09:23:44 pm »
If you've never changed your pre filters or membranes in 2 1/2 years, its pretty much a banker that they want changing mate


(You may be better off posting your questions in the main window cleaning section btw)

cleantech-westmids

  • Posts: 72
Re: TDS at 70 through RO?
« Reply #3 on: February 05, 2015, 09:56:02 pm »
Thanks Don. I change my pre filters regular. From RO it still comes out at 70

clarkson

  • Posts: 1022
Re: TDS at 70 through RO?
« Reply #4 on: February 19, 2015, 02:44:16 pm »
Hi
70 is quite high and 2.5 years is about the lifespan with regular use.

Tried adjusting your waste I assume?

Mine runs at 14 , with 350 going in.

John