[dean hellyar]

How often wud u change the filters on my pure freedom RO system 40/40

thanks
Dean

[home6442]

Depends on the tds of your tap water.
I change the pre. filters every 3 months my tap water reads 190-210.
My 40/40 ro is over 4 years old and still working well.
Filter about 400lts. per day.

[SB Cleaning]

Depends on the tds of your tap water.
I change the pre. filters every 3 months my tap water reads 190-210.
My 40/40 ro is over 4 years old and still working well.
Filter about 400lts. per day.

I change mine every 3 month's as well and flush the system through once a week for 20mins

[dean hellyar]

thanks guys

Cheers

Dean

[Perfect Windows]

Depends how dirty your tapwater is and how much water goes through it every day.

Here's one of mine after about three months.

Unfortunately, you'll have to take out the asterisks in the address as the STUPID swear filter on this site doesn't like the site.

http://image**shack.us/photo/my-images/839/img6259z.jpg

The filter was as white as the paper when I put it in.

Vin

[Smudger]

pre-filters require changing 3 to 6 months certainly no longer for the carbon one

the better you look after the pre-filters the longer the membrane will last

Darran

[dean hellyar]

if you only use your system lightly say about 6 times a months if that, would you  leave the filters any longer???

Cheers

[Perfect Windows]

if you only use your system lightly say about 6 times a months if that, would you  leave the filters any longer???

Cheers

Definitely.  The way a filter clogs is that it fills with particles filtered out of your water.  The more water it filters, the more it's clogged.

My picture above is of a filter that passes through about 3,000 litres a day, so in the 3 months or so I used it, about 180,000 litres went through it.  That plus the fact my water's sometimes VERY dirty gives heavy contamination.

Just keep a look out for the filter.  If it's still purish white you'll be fine.

Vin

[Smart Carpet]

Depends how dirty your tapwater is and how much water goes through it every day.

Here's one of mine after about three months.

Unfortunately, you'll have to take out the asterisks in the address as the STUPID swear filter on this site doesn't like the site.

http://image**shack.us/photo/my-images/839/img6259z.jpg

The filter was as white as the paper when I put it in.

Vin

[[GQC] Tim]

They are rated for a number of liters, think 10" ones are rated for 40000 liters. To take the guess work out (some might use 250 a day, some might use 1000L a day) buy an inline water meter.

So any estimates, say 2 or 3 months would be inaccurate as it would change per user.

[Ian101]

Confession time  .... when first set my 4040 up didnt realise they needed changing as often as they did 

They had been in for about 2 years 

Took em out and they were stinking and water water driping out of them was filthy.

now change em every 4 months and keep a few sets in stock as it were.

Changing mine later this morning ... PIA job as filter spanner dont fit em so have modified a metal clamp to crack em open.

[Window Washers]

They are rated for a number of liters, think 10" ones are rated for 40000 liters. To take the guess work out (some might use 250 a day, some might use 1000L a day) buy an inline water meter.

So any estimates, say 2 or 3 months would be inaccurate as it would change per user.

Your right Tim, it also depends on other things i change mine when needed on 20 inch a tell tale sign is water production time drops as soon as this happens I monitor it for a couple if weeks as the water board turn pressure up and down I took a picture the other day other the new and old filters together

[home6442]

They are rated for a number of liters, think 10" ones are rated for 40000 liters. To take the guess work out (some might use 250 a day, some might use 1000L a day) buy an inline water meter.

So any estimates, say 2 or 3 months would be inaccurate as it would change per user.

40000 litres under what conditions.
250 litres a day with tap water of 200 tds or 1000 litres a day with tap water of
400 tds. Also the closer you live to a water processing plant the higher the chlorine level.
Its all guess work and finding what works for you.

[Perfect Windows]

40000 litres under what conditions.
250 litres a day with tap water of 200 tds or 1000 litres a day with tap water of
400 tds. Also the closer you live to a water processing plant the higher the chlorine level.
Its all guess work and finding what works for you.

TDS cannot affect a particulate filter, as it can't remove anything dissolved,  Not sure about charcoal on that front, though.

Chlorine levels depend on many things as well as distance from the plant, so it might be wise not to depend upon that alone.

My solution on the particle front has been to run two filters.  As soon as number 2 shows any sign of discolouration, it becomes number 1 and a fresh filter no 2 goes in.  (Done that since - and as a result of - the pic above)

Vin

[[GQC] Tim]

I was just about to post prefilters don't affect TDS. Chlorine levels are closely monitored throughout the system to have a constant 0.1 – 0.5 parts per million. They are all standards safe for drinking water, they are monitored very closely. If the pre-filters are rated for 40000 liter then you can be pretty sure in real life it will be somewhere in that region.

It sure beats sticking our fingers in the air and guessing whether to change our pre-filters. A simple statement of 2 or 3 months or however long really doesn't cut it for me. Membranes are too expensive for that.

Window Washers you are right, usually a pressure drop and change in product rate will indicate a change of filters as well, but the rated amount of water to pass through the pre-filters is I believe less then that.