Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: JTHRC on July 06, 2008, 09:56:40 pm

Title: How to flush?
Post by: JTHRC on July 06, 2008, 09:56:40 pm

My merlin is only putting out 060 tds from 350 tap.
It has a relatively new prefilter and membranes seem ok and are screwed in properly so ???

Any ideas anyone? Should i flush it and if so how please?

Cheers

Title: Re: How to flush?
Post by: darragh windows on July 06, 2008, 10:04:51 pm

these guys sell what you need to flush your merlin


http ://www.surecleansystems.com/proddetail.asp?prod=56

Title: Re: How to flush?
Post by: alanwilson on July 06, 2008, 10:18:34 pm

how old are the membranes?

what is your inlet pressure?

are you testing the water as soon as it comes out of the ro? - if so you need to let it run for 10mins before the tds reading will settle.

From 350ppm you should be looking at 015ppm from your merlin.

Title: Re: How to flush?
Post by: JTHRC on July 06, 2008, 10:30:25 pm

Thanks,

The membranes are not even a year old and yes I am letting it run for a good while before taking reading.

It is just from a normal outside tap, i dont know the pressure.

when i first used it, it was getting down to around 012 then went up to 030 and is now at 060 and i have put a new filter in since then.

So i'm a bit baffled :(

Title: Re: How to flush?
Post by: Dave Turley on July 06, 2008, 10:32:35 pm

my merlin was kickIng out 12ppm at 60psi from 230ppm when I had it new 7 months ago.

it is now at 25ppm at 60psi from 230ppm.

i've recently changed my prefilter, so perhaps I need to flush mine also.

do you have to buy something to flush it then?

is it not just a matter of connecting a different port up to the mains ???

Title: Re: How to flush?
Post by: alanwilson on July 06, 2008, 10:37:03 pm

sounds to me like chlorine damage.

the top port is for flushing - either connect it to a pressurised tank of pure water or to your pure water hose from the pump.

worth a try

Title: Re: How to flush?
Post by: Dave Turley on July 06, 2008, 11:01:38 pm

oh cool, i'll try that 2moro, thanks.

I take it you don't connect up the 2nd port up to the mainsat the same time

Title: Re: How to flush?
Post by: Nathanael Jones on July 06, 2008, 11:04:53 pm

You can get a flush kit for Merlin's:

www.surecleansystems.com/proddetail.asp?prod=138

Title: Re: How to flush?
Post by: Dave Turley on July 07, 2008, 07:32:16 am

thanks nathaniel, not much product info there though.

is it NECESSARY to buy a flush kit though?

Title: Re: How to flush?
Post by: Nathanael Jones on July 07, 2008, 09:03:17 am

I'm sure you can switch pipes and manually flush,.. but it's a huge pain.
If you buy the flush kit, it makes it simple,... so you'll prob do it more regular,.. and your membranes will last longer as a result.

RO-Man do an auto flush valve which flushes a few seconds every minute,.. very cheap too. If I'd invested any real money on my RO I'd defo get one.

Title: Re: How to flush?
Post by: Dave Turley on July 07, 2008, 10:19:41 am

thanks nathaniel, i'll have to take a look later on.

just for now, alan or anyone, how exactly do you flush a merlin just using the ports?