Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: MNWC on April 28, 2015, 08:09:42 pm
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How often and how long should i flush the 4040 for ?
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15 min after 1000litres of pure in one go or 5min before and after (thats what i have been told by vyair and gaps water)
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ok thanks, got mine from vyair
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15 min after 1000litres of pure in one go or 5min before and after (thats what i have been told by vyair and gaps water)
I think I need to flush more then. I do it about once per week while filling the van. Probably averages about 10-15 minutes per 2500 litres. After 4 years, it's still turning out water at 008 though (006 was the best ever due to the low pressure).
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20 min once a week is enough.
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I go for 20 mins once a week and use about 1800 l a week, I cant really know if that's right for sure yet though as ive only had the thing a couple of months
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I read on here a little while ago that gaps water said there is no need to flush the membrane.
I stopped flushing mine over a year ago, and it has had no effect on the membrane. It is nearly 5 years old, water in is roughly 350ppm and the RO output it 18ppm. It produces 2000L a week with 60% waste.
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No need to flush. June at Gaps water said that to me. I have not flushed for over a year and everything is fine with mine
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I always find flushing has a negative effect on performance on my 4021 membrane so I have also stopped flushing.
It just seemed to slow down production where as now I don't flush production rates stay the same.
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Mmm a mix of opinion there then. So how come manufactures recommend flushing a 10 inch membrane...
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Sorry I was told not to flush the 4040 membrane
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I flush mine when I change the filters, every 3/4 months. It only removes the particles from the outer skin. My last RO lasted about 12 years.
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Excellent I hate flushing sa , I'm not gunna bother any more June at gaps would know she nahs it all
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I dont flush either and mine gets from 380ppm to 006ppm. Membrane is 12 months old.
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June at Gaps advised me that if you don't flush, the effect will be to reduce the speed at which you produce pure; it won't affect output TDS.
I flush about every two months for about ten minutes. Membrane (HF4 4040) is now two years old and producing at exactly the same numbers as a week after I bought it.
Vin
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I flush before and after each use, but I produce at least 2k per time I run, I haven't noticed any longevity in low tds doing this, but like vin it is producing water at the same speed as when new.
Pre filter changes are more important IMO
Darran
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sorry for my ignorance ,
how do you flush the membrane .
Mine has shot up from 15ppm to 35ppm over a year so would know if the flushing might help .
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Hi frankwii,
Its martin from sandbanks road, if you need any advise text me on 07588620759, have you got a clarke water pump?
if not you need one as your tds will slowly creep up to the 50,s. I went through a 40/40 once a year till i bought one. Had mine over a year now and tds is still around 10 from 400 tap water. i presume your water pressure in poole is crap too?
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I dont flush either and mine gets from 380ppm to 006ppm. Membrane is 12 months old.
You using a booster pump with that ?
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Hi frankwii,
Its martin from sandbanks road, if you need any advise text me on 07588620759, have you got a clarke water pump?
if not you need one as your tds will slowly creep up to the 50,s. I went through a 40/40 once a year till i bought one. Had mine over a year now and tds is still around 10 from 400 tap water. i presume your water pressure in poole is crap too?
Hi Martin. Thanks for that info. I've put a water pump in during the weekend and it brought the tds down to 30 after being aprox 15 to 20. The ro membrane is only a year old and it shot upto 50 within a couple of weeks. Unfortunately hard water and pressure fluctuating in the area not helping much. If I can squeeze another year out of it would be great. Thanks for the suggestion though
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Hi Martin
I am just ordering a replacement 4040 membrane for a used system I recently bought. What model Clarke pump do you use?
Thanks
Paul
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Hi Martin
I am just ordering a replacement 4040 membrane for a used system I recently bought. What model Clarke pump do you use?
Thanks
Paul
CBM240E