Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: groundhog on May 14, 2020, 09:53:39 am

Title: RO going slow!!
Post by: groundhog on May 14, 2020, 09:53:39 am

I have just replaced the membrane on my RO and it is now producing water ridiculously slow! I have good water pressure and have never needed a pump so not sure what is going on? Any ideas?

Title: Re: RO going slow!!
Post by: Richard Groves on May 14, 2020, 10:38:23 am

I think you're going to have to provide a bit more information, what size ro is it ? have you replaced with a branded like for like ? are you sure the membrane has been replaced the right way round / seal correctly fitted ?

Title: Re: RO going slow!!
Post by: groundhog on May 14, 2020, 10:52:35 am

It is a 20", never had a problem before. It is the cheapest membrane I could find on Window cleaning warehouse, but is literally producing water 75% slower than before! I will check it is the right way up when I finish work.

Title: Re: RO going slow!!
Post by: Richard Groves on May 14, 2020, 12:04:12 pm

I've a 4040. Its a shame not all membrane brands have a flow direction symbol on them ! .... I recently replaced mine after cleaning it in hg descaler the wrong way round ( the tds was higher though ) . From watching a  youtube clip ( squeaky clean ) I realised my mistake. Seems the end with the rubber seal /gasket on it usually goes in first to the feed end. Don't know if thats of help or not, but good luck .

Title: Re: RO going slow!!
Post by: windowswashed on May 17, 2020, 05:46:50 am

The RO starts slowing down when the carbon filter is clogging up.  Did you replace the filters when you replaced your ro membrane?

Title: Re: RO going slow!!
Post by: P @ F on May 17, 2020, 11:20:21 am

These days my RO goes faster than me  ;D