[dave0123]

Just wondering what do most people set there tap valve on 4040 ro?? how much waste compaired to pure.

got mine set to around 60/40 60% being waste.. the tds  comes out about 13 or 14 at that rate, with 337 going in anymore closing of the tap tds starts tog go up.


Dave

[windowwashers]

Just wondering what do most people set there tap valve on 4040 ro?? how much waste compaired to pure.

got mine set to around 60/40 60% being waste.. the tds  comes out about 13 or 14 at that rate, with 337 going in anymore closing of the tap tds starts tog go up.


Dave

I have more pure than waste 70/30 at a guess I did have tds of 470 going in, but now have a salt(softener vessal) so it goes off the scale, seems to give more pure and alot quicker.

[dave0123]

dont blame you with being on a meter 

mines slightly more waste to pure if i close tap anymore the tds rises soo.. have to keep it as it is... luckily not on a meter tho.


my TDS used to be around 380 390 410 but seems very lower these days maybe its the good weather 

[windowwashers]

dont blame you with being on a meter 

Tell me about it, and I asked for it to be fitted  :

[dave0123]

lol..  

i have  2 tds meters now one gaps water sent me with the kit i got and a purefreedom one that come from off ebay.

i have just tested my water with both one displays 337 the gaps water one.. purefreedom displays 390   

so i was thinking of buying some pure water from asda or is it just RO water? if not have 2 get another meter to see which is correctly working lol 

[windowwashers]

lol..  

i have  2 tds meters now one gaps water sent me with the kit i got and a purefreedom one that come from off ebay.

i have just tested my water with both one displays 337 the gaps water one.. purefreedom displays 390   

so i was thinking of buying some pure water from asda or is it just RO water? if not have 2 get another meter to see which is correctly working lol 

you need calibration fluid, ro-man does it, and I swear I saw someone say on here you can get from chemist.

I have a few of the handhelds, when they stop I just buy another 

[dave0123]

how you mean calibration fluid?


do they not last long?

[windowwashers]

h ttp://www.ro-man.com/shop/product_info.php/products_id/250

take out the space

Ian

[dave0123]

oh i see..

so obv the water is a certain TDS and dip both in and obv the one that comes back at the right one is correct?

[windowwashers]

oh i see..

so obv the water is a certain TDS and dip both in and obv the one that comes back at the right one is correct?

as far as I am aware, there is a pin hole in the back for this, but have never used or tried it, I am sure there will be some that do this though on here.

Alex G will have this answer

Ian

[jewelcleaning]

I have a softener before the RO (4040) and I can have the tap right down so a trickle of waste at around 500-800ppm, and still low ppm for pure, but coming out more quickly. 

(BTW: Water in 160-180ppm.)

Don't know what this is doing to the Ro though, I guess as long as I open the valve fully once regularly and flush through it should be ok, but correct me if I'm doing it all wrong?

[brightnclean]

Ian .

A word of warning for you mate. Do NOT run your 4040 at 70% product to 30% waste even with a softener. It should be much nearer the other way around. You WILL ruin your membrane quickly especially with your high tap TDS.

I riuned a 40 inch membrane by neglecting it. The main thing was running it at low waste to high output.

[Alex Gardiner]

oh i see..

so obv the water is a certain TDS and dip both in and obv the one that comes back at the right one is correct?

as far as I am aware, there is a pin hole in the back for this, but have never used or tried it, I am sure there will be some that do this though on here.

Alex G will have this answer

Ian

There is usually a small screw set behind this 'pin hole' which you can adjust until it reads the 500ppm of the calibration fluid.

[brightnclean]

I have a softener before the RO (4040) and I can have the tap right down so a trickle of waste at around 500-800ppm, and still low ppm for pure, but coming out more quickly. 

(BTW: Water in 160-180ppm.)

Don't know what this is doing to the Ro though, I guess as long as I open the valve fully once regularly and flush through it should be ok, but correct me if I'm doing it all wrong?

YUP you are doing it wrong. Increase the waste to at least 60%. Flushing it now and then wont help much at all at your waste to product ratio. You are lucky in having a lowish tap TDS so you might have got away with it.. for now.

[windowwashers]

I have a softener before the RO (4040) and I can have the tap right down so a trickle of waste at around 500-800ppm, and still low ppm for pure, but coming out more quickly. 

(BTW: Water in 160-180ppm.)

Don't know what this is doing to the Ro though, I guess as long as I open the valve fully once regularly and flush through it should be ok, but correct me if I'm doing it all wrong?

as long is there is no salt there is not a problem.

I got told this from a guy that is clued up, I will try and explain what was said.

softener make water bigger, when hitting the ro it is like 50p and pennies 50p are forced through ro and pennies in waste hope that makes sence.

I got the straight off when told (and Jerry again you are a star, fosters )

when i did a test on water after softener my tds meter went mental and said x10 997 and it scared the life out of me, as said it in simple terms makes the water bigger, add a booster pump in with this and the results are FANTASTIC
Ian

[windowwashers]

Ian .

A word of warning for you mate. Do NOT run your 4040 at 70% product to 30% waste even with a softener. It should be much nearer the other way around. You WILL ruin your membrane quickly especially with your high tap TDS.

I riuned a 40 inch membrane by neglecting it. The main thing was running it at low waste to high output.

That was a guess I cant do the tests as my van is not here.

but a 4040 should not have 60% waste ratio should it 

[dave0123]

There is usually a small screw set behind this 'pin hole' which you can adjust until it reads the 500ppm of the calibration fluid.

thanks Alex

why do they need re calibrating tho? i thought they were factory calibrated?

[Alex Gardiner]

There is usually a small screw set behind this 'pin hole' which you can adjust until it reads the 500ppm of the calibration fluid.

thanks Alex

why do they need re calibrating tho? i thought they were factory calibrated?

Who knows!

I have had a hand held one now for 7 years and it is still on its original battery and its factory settings. Always spot on.

[brightnclean]

Sorry Ian but it should have at least that mate  Even when using a softener.

If you look at any RO manufacturers spec sheets for 40 inch membranes like the ones we use their figures are based on only 15% recovery. That's 85% waste.

Please tell me you are not putting your water straight into the RO system when you are regenerating your softener resin with the salt crystals. The reading with the salt in it is off the scale. It should be run until every bit of sodium solution has been dispersed and then connected back up to the RO.

[windowwashers]

There is usually a small screw set behind this 'pin hole' which you can adjust until it reads the 500ppm of the calibration fluid.

thanks Alex

why do they need re calibrating tho? i thought they were factory calibrated?

Who knows!

I have had a hand held one now for 7 years and it is still on its original battery and its factory settings. Always spot on.

One of mine just comes up with error, not got a clue why lucky I had a spare, but got another just to be on the safe side.