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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Easyclean Windows on December 07, 2005, 06:37:24 pm

Title: MERLIN USERS
Post by: Easyclean Windows on December 07, 2005, 06:37:24 pm

Can someone who uses a merlin please advise when the membranes need to be changed.Do they need changing when the water going in reads above a certain tdi level and if so what is the level?

Thanks

Title: Re: MERLIN USERS
Post by: steve jamieson on December 07, 2005, 07:06:52 pm

what % are you getting ,i have only had mine 6 weeks and the tds shoot up a couple of days ago  from 38 to110 then settled down to 38

Title: Re: MERLIN USERS
Post by: H h20 on December 07, 2005, 07:11:23 pm

I`ve had my merlin for 6 months and for the first couple of weeks the tds was 26,then it went to 28 and is still 28 ,iv`e read that the membranes are suppose to last 2-3 years  on average depending on your tap tds,Gaz

Title: Re: MERLIN USERS
Post by: steve jamieson on December 07, 2005, 07:21:24 pm

Gaz  have you needed to back flush your merlin or do you now when this needs to be done

Title: Re: MERLIN USERS
Post by: H h20 on December 07, 2005, 07:24:21 pm

Quote from: steve jamieson on December 07, 2005, 07:21:24 pm

Gaz  have you needed to back flush your merlin or do you now when this needs to be done

Sorry no i have`nt back flushed it yet,to be honest i don`t know how  :D,or what difference it makes,i could do with advice on this myself,Gaz

Title: Re: MERLIN USERS
Post by: Easyclean Windows on December 07, 2005, 07:46:35 pm

back flush........all you do is connect your water in,drainage and let your water in pipe run into the drain until your tdi is reading lower.If you take a reading as soon as you turn the water on it will read over 200 so you need to flush the membrane and filter for a couple of mins to get the tdi down.

Ive had mine for 10 months i have a tdi of 300 before merlin then 0014 going through

It has only gone up by 001 to 0015 not bad.

I just wondered when the membrane need changing.I know they say 2-3 years but the reading has to be a certain level ie 20?30?100?  not sure.

Title: Re: MERLIN USERS
Post by: JM123 on December 08, 2005, 04:41:49 pm

Try using a 10inch housing with water softener if your tds is above 250/300, membranes will last 2 years ok but def recommend water softener plus a small di unit after membranes - bought 2 for customers both getting 2000ltrs a day at 0tds and have been for 4 months now, tap water in the area is 350ppm or so.

Title: Re: MERLIN USERS
Post by: GRAHAM.K on December 08, 2005, 05:22:05 pm

i back flush my ro every 900 hundred litres (300 litre tank) this needs to be done on a regular basis other wise the impurities that build up can burn holes in the membrane, thats where you start getting high tds readings coming out of the ro. I backflush my water softning filter at the same time using granulated salt to re charge it.

Title: Re: MERLIN USERS
Post by: JM123 on December 08, 2005, 05:38:51 pm

If you have a water softener you shouldn't need to backflush it that often. How high is your tds from the tap?? 

Title: Re: MERLIN USERS
Post by: steve jamieson on December 08, 2005, 05:59:44 pm

JM123  im getting 340/50 do you think i would get a lower reading with a softner ,  thanks steve j

Title: Re: MERLIN USERS
Post by: GRAHAM.K on December 09, 2005, 04:30:38 pm

tds from tap 150 ish. flushing this often i was informed that i could get  up to 4 years  out of the ro . its only a 10 min flush every 4 or five days. mainly to flush out the chlorine that eats away at the membrane. thats what i was told, if that sounds too good to be true i'd be interested to know what to expect,
cheers.

Title: Re: MERLIN USERS
Post by: leegooner on December 12, 2005, 03:48:44 pm

HI I CONNECTED MY HOSE TO THE OUT PIPE TO MY MERLIN
EXPECTING TO HAVE WATER COMING OUT OF WERE I CONNECT
MY HOSE (INLET),BUT IT WENT THROUGH MY DI FILTERS TO MY TANK?
1,IS THAT RIGHT?,2,SHOULD I  DISCONNECT BEFORE DI?
THANKS LEE