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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: geefree on February 09, 2010, 07:17:55 pm

Title: Pure water filling very slowly
Post by: geefree on February 09, 2010, 07:17:55 pm: Hi,

I use a Ro, and it takes all night to fill my 650l tank, but this past week, its been filling up very slowly, and a couple of times ,if i have not been able to put the water on early enough,..... i only get half a tank,....

first i thought it was the cold weather, but its nowhere near as cold as it has been, and it was fine through all of that,

so i changed the filters,....still the same..could it now be the membranes?

i dont even know what they are, only where they are !

i have used them without changing them for two years.

grateful of any help. :)
Title: Re: Pure water filling very slowly
Post by: forest on February 09, 2010, 07:30:36 pm: Yes it will be the membranes in my experience. I have never known filters affect my flow rate but a friend of mine has had trouble with his membranes.

Hope this helps.
Title: Re: Pure water filling very slowly
Post by: geefree on February 09, 2010, 07:39:05 pm: Thanks ,just checked out prices for membranes..... may as well get a new ro system ???
Title: Re: Pure water filling very slowly
Post by: easycleaner on February 09, 2010, 08:40:56 pm: Hi.
Found out the hard way my membranes froze and it did the same.
Mart.
Title: Re: Pure water filling very slowly
Post by: Sapphire Window Cleaning on February 09, 2010, 08:42:31 pm: What RO do you have Gazz?

Matt
Title: Re: Pure water filling very slowly
Post by: Window Washers on February 09, 2010, 09:53:26 pm: Quote from: forest on February 09, 2010, 07:30:36 pm
Yes it will be the membranes in my experience. I have never known filters affect my flow rate but a friend of mine has had trouble with his membranes.

Hope this helps.

depends on what system is used, I use 4040 and when it slows down it is normally the pre filters that need changing.

Gazz have you flushed it for a while over 30 mins this sometimes gives it a little extra life ?
another thing have you checked all pipe work going to the ro ect? there reason I ask this a pipe on mine bent once and for the life of me could not work out what was wrong, I replaced everything, then found it was just a kink in pipe ::)
Title: Re: Pure water filling very slowly
Post by: karygate on February 10, 2010, 07:11:23 am: the cold will really affect the fill rate. if the third filter is chogged up.(the carbon one) it can nearly stop production.happened to a friend of mine.
Title: Re: Pure water filling very slowly
Post by: tompoole on February 10, 2010, 07:56:59 am: is it going through a DI, If yes it maybe the filters in the DI cartridge. buy a new resin container.
Title: Re: Pure water filling very slowly
Post by: geefree on February 10, 2010, 09:37:55 am: Hi,

its a 300 gpd ro-man

all new filters, no kinks.... so it must be membranes. oh no, ... :(

New front tyres last week..., service at end of the month, van tax due end of month,
m.o.t 3rd march

with all the time off in january, its taking its toll now. ???
Title: Re: Pure water filling very slowly
Post by: mark dew on February 10, 2010, 10:20:25 am: get a booster pump. Well worth the extra money.
Title: Re: Pure water filling very slowly
Post by: Spruce on February 10, 2010, 11:17:56 am: Quote from: mark dew on February 10, 2010, 10:20:25 am
get a booster pump. Well worth the extra money.

I am sure that would help, but if the system was working fine and now it isn't, the question is - what has changed.
We don't have a booster pump and find a real difference between summer and winter filtration speeds. We have always found that there is a 'delay' into winter before this slowdown becomes noticable and it takes time in the spring before processing time improves. I have noticed this cycle every year.

I always fill my van (650l tank) to brim on Sunday and we can just manage with 2 vans through the week this way. Our IBC tank is also set to automatic fill so we can't forget to put the system on now. Though the summer we have no problems with water
Spruce
Title: Re: Pure water filling very slowly
Post by: d s windowcleaning on February 10, 2010, 12:48:51 pm: gazza theres a shop in barnsley where you can get membranes cheaper .