Re: RO membranes

["Roger Vitko" <rvitko@ix.netcom.com>]

Slow production means nothing, cold water reduces production dramatically,
at a feed of 60degrees F you will have 60% of the production at 75F  I
suspect this is the case, of course flow emains the same so their is more
waste, the plastic pores close up.  The real test is the hardness and yours
sounds reasonable.    If you haven't changed prefilters in 6months this
might help but a mebrane is generally good for 3years.


----- Original Message -----
From: "Szalies Jean-Marc" <Jean-Marc.Szalies@Fluxys.Net>
To: <apisto@listbox.com>
Sent: Monday, February 03, 2003 2:03 AM
Subject: RO membranes


How often do you have to change your membranes ?
How do you notice they are dead ?

I currrently higly suspect mine...(TFM36)
Produce twice less / day and seems to reject more then before.
It's 1.5 years old, protected by 2 big prefilters.
Tap water is ±850µS, eluate ±35µS
Is there a way to "revamp" them ? Even only for few weeks ?
It doesn't look possible to operate it 'reversed' :(




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