Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: p1w1 on January 13, 2009, 12:43:46 pm

Title: 100 gpd membrane faulty
Post by: p1w1 on January 13, 2009, 12:43:46 pm

Hi,

I just wanted to check with others to see if you agree.. I have just fitted 3 new 100 gpd membranes,   filters,and new resin after running the system for nearly 24 hours and prior flushing after taking seperate readings 2 of the membranes were bringing the tds down to 20ppm before the di and 1 membrane could only manage it down to 200ppm would you agree that this membrane is faulty..

thanks
paul

Title: Re: 100 gpd membrane faulty
Post by: Alex Gardiner on January 13, 2009, 01:21:39 pm

It is more likely that it has not been seated properly in it's housing. It would be worth taking it out putting a very little silicone grease on the the O rings and fitting it back in, being careful to push it fully into position.

If this does not improve it then it would have to be a faulty membrane. This is very rare, but can happen occasionally.

Title: Re: 100 gpd membrane faulty
Post by: p1w1 on January 13, 2009, 01:26:08 pm

thank you alex i did take it out and replace it a couple of times but was still getting the same results..then put an old one in from the last lot as they were only a few months old and it was ok the only reason they have been replaced was because the housings all cracked with the recent freeze..

paul

Title: Re: 100 gpd membrane faulty
Post by: Alex Gardiner on January 13, 2009, 02:23:07 pm

Must be the membrane then, unless it is some very obtuse yet to be discovered problem!