Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: marcus hopkins on February 13, 2007, 09:50:22 pm

Title: RO output
Post by: marcus hopkins on February 13, 2007, 09:50:22 pm

Hi all

I know this is old stuff to most of you guys. But i am curious to know what output people are getting from their RO's.
I have a 300 GPD but it takes 11 hours to fill my 250 ltr tank. My tap TDS is 379ppm out of RO 13 ppm after resin 0ppm. I have a booster installed also.
Is there anything else i can do to improve RO performance.

Marcus

Title: Re: RO output
Post by: Chris Cottrell on February 13, 2007, 09:52:09 pm

what pressure is the pump at?

Title: Re: RO output
Post by: marcus hopkins on February 13, 2007, 09:54:56 pm

Hi Chris

The pump is not variable but has a max boost of 120psi. I assume that is somewhere near where it is.


Marcus

Title: Re: RO output
Post by: Chris Cottrell on February 13, 2007, 09:57:51 pm

your RO is it a dual or tripple membrane ( i asume its a "ro-man" type r/o unit not a 40/40 RO)

Chris

Title: Re: RO output
Post by: marcus hopkins on February 13, 2007, 09:59:31 pm

Correct :)
Triple membrane RO-MAN type filter.

Marcus

Title: Re: RO output
Post by: Chris Cottrell on February 13, 2007, 10:03:53 pm

your pump is only working at 75psi

is there any way you can turn it up , you said it can boost to 120 psi is there an adjustment on it?

Chris

Title: Re: RO output
Post by: marcus hopkins on February 13, 2007, 10:05:34 pm

no, its a case of turn on/off. There are no external adjustments.

Marcus

Title: Re: RO output
Post by: Chris Cottrell on February 13, 2007, 10:08:28 pm

what sort of pump is it, where did you buy it, etc

Title: Re: RO output
Post by: Chris Cottrell on February 13, 2007, 10:20:10 pm

 ???

Title: Re: RO output
Post by: marcus hopkins on February 14, 2007, 05:25:02 am

Hi Chris

Sorry for the delay, had to hit the sack :)

The pump is made by a company called jeak. I purchased it from adapta engineering (pure freedom) Grimsby.

Marcus

Title: Re: RO output
Post by: Tim Morton on February 14, 2007, 06:54:30 am

Quote from: marcus hopkins on February 13, 2007, 09:50:22 pm

Hi all

I know this is old stuff to most of you guys. But i am curious to know what output people are getting from their RO's.
I have a 300 GPD but it takes 11 hours to fill my 250 ltr tank. My tap TDS is 379ppm out of RO 13 ppm after resin 0ppm. I have a booster installed also.
Is there anything else i can do to improve RO performance.

Marcus

I too have the Ro-Man 300Gpd, but have the old ro-man pump box to boost it, and I fill my 400L tank in about 7hrs, 160-190tds in, 000-001 out before di.

I would have to say that your booster pump is the most likely suspect, it may give enough pressure, but it sounds like it cant produce enough volume or flow rate to keep up with the Ro.


Tim

Title: Re: RO output
Post by: Chris Cottrell on February 14, 2007, 08:17:06 am

I would agree with that it does seem that the pump is the problem, I have the old RO Man pump box too and fill 2x210l barrels in about 6/7 hrs, my input tds is around the 500 mark, out of the RO it is down to 5/6 tds the pump works at 105psi

Mybe you could fit one of these to see exactly what the input pressure is

http://www.ro-man.com/shop/product_info.php/cPath/23/products_id/76

Oh and as an after thought where is you pump in relation to the setup? Idealy it should be connected after the prefilters but before the RO membranes


Chris

Title: Re: RO output
Post by: marcus hopkins on February 14, 2007, 06:39:48 pm

Hi again
Thanks for the advice. My pump is situated after the pre filters and before the membranes as you say. Looks like i need to look further :(

Thanks again

Marcus

Title: Re: RO output
Post by: JM123 on February 14, 2007, 06:41:42 pm

I would bin the pump, its not up to the job, also change your prefilters.  Get the booster box from ro-man, good piece of kit.

Title: Re: RO output
Post by: Chris Cottrell on February 14, 2007, 06:55:47 pm

Quote from: JM123 on February 14, 2007, 06:41:42 pm

I would bin the pump, its not up to the job, also change your prefilters.  Get the booster box from ro-man, good piece of kit.

I think the booster box is unfortunately not available anymore (or at least not listed on their website anymore)

Which IMO is a great shame as this is an excellent piece of kit

Chris