Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: stevieg on February 20, 2015, 07:48:22 am

Title: 2 or 3 prefilters?
Post by: stevieg on February 20, 2015, 07:48:22 am

Hi,i have a 440 ro and it has 2 pre filters,my friends is one of the smaller types (450 gallons per day,but nowhere near)his has 3 pre filters! Can someone explain this discrepancy? and the advantages/dis?
Thanks.

Title: Re: 2 or 3 prefilters?
Post by: Ian101 on February 20, 2015, 07:50:37 am

is one a di resin filter perhaps ?

Title: Re: 2 or 3 prefilters?
Post by: Mike #1 on February 20, 2015, 07:55:49 am

Their is no discrepancy depends were he bought and what they advised , I live in a soft water area and bought mine from Daqua after a quick chat with Doug .

Title: Re: 2 or 3 prefilters?
Post by: stevieg on February 20, 2015, 07:58:30 am

Hi,it is just a filter!

Title: Re: 2 or 3 prefilters?
Post by: SeanK on February 20, 2015, 08:41:18 am

He will have a sediment filter a carbon block filter and a carbon granular filter (GAC) and you will only
have the first two.
Pre filters have only one job and that's to protect the R.O. membrane, they don't make a difference to the TDS
so as long as your R.O. membranes are lasting then I wouldn't worry about it.

Title: Re: 2 or 3 prefilters?
Post by: Mist A Bit on February 20, 2015, 06:30:50 pm

You Dont need 3 filters, those little ro systems were designed for a different application

Title: Re: 2 or 3 prefilters?
Post by: Twc services on February 20, 2015, 06:53:29 pm

Quote from: eco-clean (nottingham) on February 20, 2015, 06:30:50 pm

You Dont need 3 filters, those little ro systems were designed for a different application

3 is for drinking water systems.