Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Dave Willis on December 16, 2012, 09:17:09 pm
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How often do you flush your RO's and for how long?
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How often do you flush your RO's and for how long?
every time i fill about 15/20 mins , why do you ask Dave ?
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Our static has two 40/40 Ro's units a carbon and a softener, flush twice a week for about 15 minutes.
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How often do you flush your RO's and for how long?
every time i fill about 15/20 mins , why do you ask Dave ?
+1
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How often do you flush your RO's and for how long?
every time i fill about 15/20 mins , why do you ask Dave ?
Because since I moved and got put on a meter I don't tend to flush that often, hence why possibly, my last set of membranes lasted only four months. I am going to flush for an hour every week now. Just curious to know what everyone else does.
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I process water in a soft water area (Cornwall - 95ppm) so I do not have to worry quite as much as some WC's. I like to flush the membrane for about 5 minutes before each tank fill (2500 litres). About once a month (when I remember!) I then also flush for about 30 minutes.
I have had my current HF4 membrane for about 2.5 years and it is still producing water at about 002ppm - input pressure of about 100psi.
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Blimey :o
My tds is around the 300 mark. It has been suggested that my 450gpd system may have been supplied with the wrong restrictor too. I used to get two and a half years out of my membranes.
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Blimey :o
My tds is around the 300 mark. It has been suggested that my 450gpd system may have been supplied with the wrong restrictor too. I used to get two and a half years out of my membranes.
Which system did you have previously? A 300gpd or 450 gpd system?
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I process water in a soft water area (Cornwall - 95ppm) so I do not have to worry quite as much as some WC's. I like to flush the membrane for about 5 minutes before each tank fill (2500 litres). About once a month (when I remember!) I then also flush for about 30 minutes.
I have had my current HF4 membrane for about 2.5 years and it is still producing water at about 002ppm - input pressure of about 100psi.
that last part makes me green with envy my water is very hard but to be fair my membrane has lasted years flushing as I do
Dave I would be interested on the figures of what your doing
Cost over saving will be interesting.
I don't use a water softener for his reason against what some suppliers say ( not you Alex )
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Blimey :o
My tds is around the 300 mark. It has been suggested that my 450gpd system may have been supplied with the wrong restrictor too. I used to get two and a half years out of my membranes.
Wish i had 300ppm, our water is 450ppm to start with, flush my ro system (before resin) eachbday for 30 minutes. My membranes been in for over 2 years now, water out of them are coming out at 012ppm.
I'm on water meter too, don't worry about the cost of being on one there is nothing in it really.
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Dave any chance you could put a meter on your waste to test this to see if there really is a saving or a cost ?
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Blimey :o
My tds is around the 300 mark. It has been suggested that my 450gpd system may have been supplied with the wrong restrictor too. I used to get two and a half years out of my membranes.
Which system did you have previously? A 300gpd or 450 gpd system?
300gpd
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I dont flush a great deal to be honest.
In fact i have not flushed for over2 weeks now.Best check tomorrow.And
when i do flush its only for a few minutes.
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i flush with pure water from my system while i drive home and then its ready to produce when i arrive
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Blimey :o
My tds is around the 300 mark. It has been suggested that my 450gpd system may have been supplied with the wrong restrictor too. I used to get two and a half years out of my membranes.
Which system did you have previously? A 300gpd or 450 gpd system?
300gpd
This will be why, in a hard water area, you are not getting as long from the membranes. By squeezing 150gpd from each membrane instead of the original 100gpd the material is more densely packed and in hard water areas this will lead to membrane clogging and fouling much more quickly than on the original 100gpd membranes. After a while even flushing will not remove this fouling and leads to a noticeable performance difference.
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Interesting, wish I'd known that before ;D
The supplier obviously didn't think it important to tell their customers this.
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Interesting, wish I'd known that before ;D
The supplier obviously didn't think it important to tell their customers this.
Some don't just see it as a sale!
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I never flush
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I never flush
Does the other half moan about that??? ;D
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Has anyone looked in to possible membrane cleaning procedures, citric acid for example?
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stop being RC
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stop being RC
Lol
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How the hell do you flush a RO then?? LOL never done it system been in since August?? Have a source TDS of 140 though, nice and low :)
What do i need do and i presume advanages are keeping the membrane in top condition??
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How the hell do you flush a RO then?? LOL never done it system been in since August?? Have a source TDS of 140 though, nice and low :)
What do i need do and i presume advanages are keeping the membrane in top condition??
To flush an RO membrane you would simply need to open fully the flush valve on the waste outlet of the RO.
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I am just in the process of replacing my RO (when the courier decides to deliver it)
Up to now i have been using a 450 gpd system, it is hardly ever turned off due to the amount of water we use. My tap TDS is about 400.
My filters and membranes last at least 18 months- 2 years.
I never flush.
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once a month for about an hour
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stop being RC
He was only pulling your chain.
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stop being RC
He was only pulling your chain.
put a lid on it ;D
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I flush my .ro once a week for 15-20mins
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40/40 hard water area tds of 350 I flush every day when filling up! (1500lts)
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How the hell do you flush a RO then?? LOL never done it system been in since August?? Have a source TDS of 140 though, nice and low :)
What do i need do and i presume advanages are keeping the membrane in top condition??
and diconnect from the resin chamber as the tds rises when first starting it off
To flush an RO membrane you would simply need to open fully the flush valve on the waste outlet of the RO.
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How the hell do you flush a RO then?? LOL never done it system been in since August?? Have a source TDS of 140 though, nice and low :)
What do i need do and i presume advanages are keeping the membrane in top condition??
To flush an RO membrane you would simply need to open fully the flush valve on the waste outlet of the RO.
Still confused????
I have a 40" Axeon HF5 4040 RO
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How the hell do you flush a RO then?? LOL never done it system been in since August?? Have a source TDS of 140 though, nice and low :)
What do i need do and i presume advanages are keeping the membrane in top condition??
To flush an RO membrane you would simply need to open fully the flush valve on the waste outlet of the RO.
Still confused????
I have a 40" Axeon HF5 4040 RO
you should have three pipes coming out the the membrane housing one where the water goes in from the prefilters, then the other end you should have two pipes one is connected to your di vessel, the other is your waste pipe (this pipe should have some sort of tap on it turn it to flush the system. if you take a photo we could help you more
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Yeah i have the three pipes, water in to RO, water to DI and the water to waste, this does have a stop.
So i just turn this off?
Basically the water will be going to waste all will be going through the RO, unconnect DI and run all this to waste?
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Yeah i have the three pipes, water in to RO, water to DI and the water to waste, this does have a stop.
So i just turn this off?
Basically the water will be going to waste all will be going through the RO, unconnect DI and run all this to waste?
If you could take a photo of this 'stop' on the waste valve - I can then say what should be done to flush it.
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Yeah i have the three pipes, water in to RO, water to DI and the water to waste, this does have a stop.
So i just turn this off?
Basically the water will be going to waste all will be going through the RO, unconnect DI and run all this to waste?
basically yes, but a picture would help see what you have as having to guess your system, you may have a di bypass fitted
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My 4040 is about 5 years old. Tap tds 130 and tank dts .004 Hardly ever flush during fill ups, will back flush with tank water every now and then. Dont use resin either.
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My 4040 is about 5 years old. Tap tds 130 and tank dts .004 Hardly ever flush during fill ups, will back flush with tank water every now and then. Dont use resin either.
your lucky move 50 miles away and it would be a different story
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To be honest my RO is about stuffed. My mains pressure is around 75psi and if I fill with only a small amount of waste the TDS is 015, but found out by having more waste water, thus dropping the pressure to 60psi, the TDS is fine.