[landy2]

hello i wonder if anyone can tell me how to change my 20 inc pollen filter and carbon filter mine are in a blue case and how often should i change them

[russ_clark]

just unscrew the casings and remove/replace filters.
You may need the filter wrench as they should be pretty tight.
Change mine every 3 months but I have a requirement of around
9000 liters of pure per week 
After you have changed them make sure you flush for at least an hour
afterwards before putting it back on production.
Russ

[landy2]

were can you get the wrench from or is there anything else you can use cheers

[Slash]

Get a tea towel or something dry even a scrim and try that,can be  tough though.

[landy2]

cheers will give it a try

[russ_clark]

http://www.windowcleaningwarehouse.co.uk/shop/index.php/RO-Systems/View-all-products.html

Third one down
If I was you I would definately wait until you have
the wrench it makes it a doddle 
If you use something else you could break the housing.
Russ

[Slash]

If your TDS is below 10, I would wait for the wrench.

[Ian Rochester]

I use an oil filter strap wrench that I got from the local car parts shop, cost about £5 and does the job ideally.

Change mine every 6 months

[Ian Lancaster]

I use an oil filter strap wrench that I got from the local car parts shop, cost about £5 and does the job ideally.

Change mine every 6 months

How much pure do you produce a week, Ian? and what's your product/waste ratio?

[matt]

the main filter we need to be worried about is the carbon filter, as the clorine gets into the RO membrane and rots it