[John Mart]

The new membrane is about a month old. It started producing at 6 from 280 but last night I returned from a night out to find it still running and it's taken 16 hours to produce 1,500 litres and tds is 24. It's the third membrane in two years.

When I changed the last one there was calcium in the housing.

Does anyone have any thoughts?

I'm thinking just scrap it and start again with a new housing?

[Smudger]

Depends on what quality of membrane your using
( i ask this as a guy on eBay is selling membranes £50 less than everyone else but the quality is shocking )

are you using pre filters and changing the carbon on a regular basis ??

Darran

[Smudger]

I think you’ll find the water authority will hav e reduced pressure as well, our water production is slower at present

Darran

[John Mart]

I think you’ll find the water authority will hav e reduced pressure as well, our water production is slower at present

Darran

Although with a pump? Tds up to 24 as well. Don't know the brand but was £200 from Kennet Water. Big water specialist locally.

https://www.kennetwater.co.uk/

[dazmond]

I think you’ll find the water authority will hav e reduced pressure as well, our water production is slower at present

Darran

Although with a pump? Tds up to 24 as well. Don't know the brand but was £200 from Kennet Water. Big water specialist locally.

https://www.kennetwater.co.uk/

have you checked the tds going in?it might have gone up(from 280) hence 024?...just a thought....

what a pain for you.will you put the 024 through resin or use it for cleaning windows at this tds?

[John Mart]

I think you’ll find the water authority will hav e reduced pressure as well, our water production is slower at present

Darran

Although with a pump? Tds up to 24 as well. Don't know the brand but was £200 from Kennet Water. Big water specialist locally.

https://www.kennetwater.co.uk/

have you checked the tds going in?it might have gone up(from 280) hence 024?...just a thought....

what a pain for you.will you put the 024 through resin or use it for cleaning windows at this tds?

287 in. Just got off the phone to Franky. I'm beginning to think the housing faulty.

[Simon Trapani]

You say there’s calcium in the ro housing? How about a water softener?

[SB Cleaning]

Are you putting silicone grease around the seals of membrane before installing??

[SB Cleaning]

Depends on what quality of membrane your using
( i ask this as a guy on eBay is selling membranes £50 less than everyone else but the quality is shocking )

are you using pre filters and changing the carbon on a regular basis ??

Darran

Think i have one..

Been using it 2 months tds has creeped up by 1 tds...I'm using 4-500 litres a day so not bad!

[John Mart]

The consensus is I need a water softener so I’ve ordered one from Daqua.

[Perfect Windows]

The new membrane is about a month old. It started producing at 6 from 280 but last night I returned from a night out to find it still running and it's taken 16 hours to produce 1,500 litres and tds is 24. It's the third membrane in two years.

When I changed the last one there was calcium in the housing.

Does anyone have any thoughts?

I'm thinking just scrap it and start again with a new housing?

You may have biological contamination.  Pop out the membrane and feel for any sliminess inside the housing.  If there is any, just replacing the membrane won't work; you'll need to replace it and clean out all the bacteria in the system. I went through a handful of 4040 membranes before June at Gaps saved me with this:

http://www.cleanitup.co.uk/smf/index.php?topic=175665.msg1483617#msg1483617

Good luck,

Vin

[Go]

Change filters every week mate.

[Smudger]

The consensus is I need a water softener so I’ve ordered one from Daqua.

doubt it

our water is 320 to 380 - i produce 1500 to 2500 litres a day - an axeon membrane will last a year at 006 before starting to rise when it gets to 012 i replace it -  i don't use resin as you go through it so quickly even at 012 its more cost effective to have a new membrane

darran

[John Mart]

The consensus is I need a water softener so I’ve ordered one from Daqua.

doubt it

our water is 320 to 380 - i produce 1500 to 2500 litres a day - an axeon membrane will last a year at 006 before starting to rise when it gets to 012 i replace it -  i don't use resin as you go through it so quickly even at 012 its more cost effective to have a new membrane

darran

Hmm, the housing was full of chalk on the last change.

[Smudger]

difficult to know remotely

calcium - chalk - sounds like a pre filter problem to me

Darran

[John Mart]

The new membrane is about a month old. It started producing at 6 from 280 but last night I returned from a night out to find it still running and it's taken 16 hours to produce 1,500 litres and tds is 24. It's the third membrane in two years.

When I changed the last one there was calcium in the housing.

Does anyone have any thoughts?

I'm thinking just scrap it and start again with a new housing?

You may have biological contamination.  Pop out the membrane and feel for any sliminess inside the housing.  If there is any, just replacing the membrane won't work; you'll need to replace it and clean out all the bacteria in the system. I went through a handful of 4040 membranes before June at Gaps saved me with this:

http://www.cleanitup.co.uk/smf/index.php?topic=175665.msg1483617#msg1483617

Good luck,

Vin

Thanks for that Vin. If the softener doesn't halt the deterioration I'm just going to bin the lot and start again.

[John Mart]

difficult to know remotely

calcium - chalk - sounds like a pre filter problem to me

Darran

They are new filters and new membrane.

[Smudger]

what filters are they - make ? sediment ?

if the pre filter is poor quality then cr@p will get through

Darran

[robert mitchell]

The prefilters won’t filter out calcium, a softener is likely to make your membrane last longer but have to weigh up cost of salt against the cost of a new membrane every year .

[John Mart]

The prefilters won’t filter out calcium, a softener is likely to make your membrane last longer but have to weigh up cost of salt against the cost of a new membrane every year .

A membrane every few weeks!