[Dave Anderson]

Hi I have just been filling my new water tank and it has taken 25,5 hours to fill the tank which by my reckoning is 1869ish litres, so around 73,33 litres per hour.

50psi 325 tds in > 5 after membrane > 0 after DI

HF5-4040

Air temp 14deg ish...

How much does your r/o produce?

Cheers
Dave.

[Steve CM]

350 litres an hour

[Lee GLS]

350 litres an hour

wow thats impressive do you have a booster pump on it?

My 650l take 4-5 hours to fill at 50 psi

[Steve CM]

350 litres an hour

wow thats impressive do you have a booster pump on it?

My 650l take 4-5 hours to fill at 50 psi

twin 4040 with a clarke booster

[Lee GLS]

Hi I have just been filling my new water tank and it has taken 25,5 hours to fill the tank which by my reckoning is 1869ish litres, so around 73,33 litres per hour.

50psi 325 tds in > 5 after membrane > 0 after DI

HF5-4040

Air temp 14deg ish...

How much does your r/o produce?

Cheers
Dave.

that seems quite slow, do you have the waste tap open at all to get your tds lower?

[Lee GLS]

350 litres an hour

wow thats impressive do you have a booster pump on it?

My 650l take 4-5 hours to fill at 50 psi

twin 4040 with a clarke booster

what benifits does the twin setup give?

[Steve CM]

faster production

[mikecam]

Mine produces just under 300 litres an hour, its pumped.

[Dave Anderson]

I have really noticed a slow down in the production rates dropping in-line with the temps which is the norm...the membrane was first installed and used April 09.

How long is a membrane supposed to be used for? the filters are changed every 3 to 4 months depending on use...I normally use 300 to 450 litres per day x 4 days per week.

Cheers
Dave.

[poole bay]

Do you back flush

[Dave Anderson]

Yes I do flush to unit before each use...

[Dave Anderson]

Sorry to bump this....

Just very interested to see what your production rates are...

Cheers
Dave

[Carl2009]

I get 300 l an hour with a booster pump.

[darren clarke]

how much waste are you guys producing?

[jsm]

i thought they would be faster than that - the merlin i use is not far behind , i get 100ltrs a hour and thats unpumped .

[ian1972]

My 4040 fills a 650ltr Ibc in around 2 and half hours,membrane should last around 2 years if you change carbon and chlorine filter regular

[Dave Anderson]

Ian what is you water psi? and tds in ?

My membrane was first used April 09....

Cheers
Dave.

[ian1972]

Tds out of tap is 088 after ro it's 001 I don't use booster pump either but guy who fitted everything for me builds the industrial huge ones he's said should get 2 to 3 years out of it as wHat burns them out is the chlorine

[Dave Anderson]

Just moved all the r/o setup so rechecked all the timings and numbers...

So outside airtemp is around 11 deg

Water in 330
Water after Membrane 5
50 psi pressure

Did a 1 minute check and waste was 3,4 litres and good was 1,2 so . . .

35% good 65% waste...so what do you get? I am just trying to  see what others are getting especially those who are not using pumps to boost their pressure. I am starting to think the membrane might be dying...but am not sure as all my notes on production rates I cannot find from when I first got the membrane.

Cheers
Dave.

[Lee GLS]

if you are getting 5 after membrane i would say there is nothing wrong with it what so ever, that is a very good output.