Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Mr T on February 12, 2015, 07:05:51 pm

Title: 4040
Post by: Mr T on February 12, 2015, 07:05:51 pm

Hi guys I'm getting a ppm reading of 24 after ro, my resin isn't lasting long should I change my 4040 ro membrane. Cheers

Title: Re: 4040
Post by: PoleKing on February 12, 2015, 08:04:29 pm

Have you tried adjusting your pure:waste ratio?
You wanna be looking at 97%.
I'd guess less than 90% before looking to change.

Title: Re: 4040
Post by: Mr T on February 12, 2015, 08:07:08 pm

Hi I have it at about 50/50 should I more waste ie 60/40

Title: Re: 4040
Post by: Avo on February 12, 2015, 08:21:05 pm

Adjust the waste till your lowest readings are achieved.

Title: Re: 4040
Post by: PoleKing on February 12, 2015, 08:25:47 pm

Quote from: Mr T on February 12, 2015, 08:07:08 pm

Hi I have it at about 50/50 should I more waste ie 60/40

Mine is about 60/40 but it depends on a lot of things.
TDS inlet being the biggest factor.
If you're on a meter being another.
& How quickly you need to produce pure probably make up the holy trinity of 4040 RO's.

Title: Re: 4040
Post by: Frankybadboy on February 12, 2015, 08:47:35 pm

how old is your membrane?
 

Title: Re: 4040
Post by: Mr T on February 12, 2015, 08:59:41 pm

Membrane is 11 months old the previous one lasted 4 years