[Suffolkcleaners]

Hi Guys

First few days of finally making my own water with the pure freedom 450gpd..

It's taken 20 hours to produce 400 litres (I have a 1000 litre ibc tank) and I bought the little 10 inch di vessel that comes with it. The tds has already gone from 000 to 002... Is this normal? Also how would I go about producing it a little quicker?

Would a bigger di vessel be better?

Thanks in advance

[Shrek]

It's gone upto 002 after producing 400ltrs of pure? Do you use a booster pump?

[Suffolkcleaners]

Hi. I don't use a booster pump just an internal one to draw the water out when the tank is pure.

Would you advise a booster pump then? Also what suggestions for the tds going up so quick? Is it down to the small 10 inch di vessel?

[Shrek]

I think a lot of people would advise to use a booster pump as this can help produce a lot more pure per day. Is it a pure freedom RO unit? I have the 10 inch vessel as well

[Smurf]

10" di canister holds very little di resin so creeps up and gets exhausted very quickly. Even when the ro output ppm is very low say 2 ppm which is about right on a new 450 ro. That depending how hard your water is and flow rate it's still not going to polish off much water before it starts to creep.  Therefore to save having to change the resin so frequently just buy say an 11 litre di tank instead.

As for speed of the ro production of water these types of ro's are slow anyway but a booster pump may help optimise the efficiently of the membranes and increase the output a bit.

[CF Facilities]

I thought that someone said on here that usually the resin supplied with the Di is not very good quality anyway and never lasts long.  Which was my experience too.

[Suffolkcleaners]

Thanks guys. Shrek yes it's a pure freedom. Perhaps the resin that comes with it is not great. Hope it's not the same as the resin in the 25kg bags as bought a big bag of that from pure freedom as well.

Any ideas on booster pumps? Does it just attach to the RO?

[Shrek]

Ok , I bought the pre filled vessel and I don't know why but it didn't last at all , after RO was 002 which should make your resin last for ages so I thought. Anyways, pure freedom sent some more out and that didn't last either. Bought some from gardiners and its lasted a lot longer 
Now then , what I did notice was , when I used the pure freedom resin , when I looked into the vessel ( inbetween the resin canister and the plastic casing) there was about 1 inch of water . Now iv changed to gardiners resin , the full canister is full of water to the lid.... And it's lasting longer.... Whether it's got anything to do with the resin lasting longer , I really don't know but that's my experience with it

[nathankaye]

Thanks guys. Shrek yes it's a pure freedom. Perhaps the resin that comes with it is not great. Hope it's not the same as the resin in the 25kg bags as bought a big bag of that from pure freedom as well.

Any ideas on booster pumps? Does it just attach to the RO?

Hiya i have exactly same set up buddy, but soon realised like you, that sone changes were needed.
Whats your tds after ro but before di?
Reason for asking this, you dont need to be overly strict on 000tds. Many clean up and over 010tds myself included. So if your tds after Ro Is this, than quite honestly safe your money and forget the di stage!
Then stick your booster after the prefilters but before membranes. I got a cheap 60psi  pump. It just takes about36 hrs or so to fill 1000 ibc tank. The booster pump will also make membranes more effective and also reduce your tds anyway.
If after above your tds is still way above 010 -015 and your not happy to work with that (tho many are) than get an 11ltr di vesel and that will last somewhat longer.

[Don Kee]

Whats your mains tap pressure?
Untill you know that, it's hard to diagnose why you're producing so little pure

The little 10"/1 litre D.I's are about as useful as a kick in the crotch....
when I had a 450gpd I was changing resin once a week
Soon changed to a 25litre

[Dave Willis]

Just a thought - why do people put the booster between the prefilters and membranes?

[nathankaye]

Just a thought - why do people put the booster between the prefilters and membranes?

Because the optimum psi through the membranes is about 70psi, which isnt the case for the prefilters. Normal tap pressure in most cases is between 30 n 35 i think.
Mine was 33 psi after prefilters so even tho producing pure it was quite slow. The booster aids production but maximises effectiveness of membranes.

[robert mitchell]

Just a thought - why do people put the booster between the prefilters and membranes?

Because the optimum psi through the membranes is about 70psi, which isnt the case for the prefilters. Normal tap pressure in most cases is between 30 n 35 i think.
Mine was 33 psi after prefilters so even tho producing pure it was quite slow. The booster aids production but maximises effectiveness of membranes.

In practice it makes no noticeable difference wether its before or after the prefilters , as long as you change prefilters before they get clogged up .

[Clever Forum Name]

You want the pre filters to actually do something though. Blasting the water through will only cause them to work less efficiently.

20 hours and 400L is rubbish for a 450GPD. My old one used to do that in 6 hours at 70psi

002 is because its a 10" canister.

[slap bash]

http://www.johnhewitt.com/pumps.htm

Get this pump I have had my one running for 8 years every it will correct your problem with quality and volume of water.

[robert mitchell]

You want the pre filters to actually do something though. Blasting the water through will only cause them to work less efficiently.

20 hours and 400L is rubbish for a 450GPD. My old one used to do that in 6 hours at 70psi

002 is because its a 10" canister.

How does it cause them to work less efficiently? 

The pump will be sucking the water through the filters faster than it would if you didnt have the filter ........ the reason for fitting it in between the pre filters and the membrane is purely for pump wear , unless you have really silty water it can wear the pump quicker .

[jo5hm4n]

I also have the same setup from Pure Freedom, i have 2 6.5L Di Vessels, can somebody explain to me how i can set it up so that the water goes through the 450GPD RO then goes into a 6.5L vessel, as in, how do i change the fittings to make this work?  Obviously the RO and DI have very small narrow hoses, so how do you modify it to go into 1/2" hose to connect to a 6.5L DI with female connectors. 

Cheers

[AuRavelling79]

Another thing - always let the RO run the "pure" to waste/drain for about thirty minutes when changing membranes (and you should have done this after installing the whole system as the water may come out at a high TDS especially for the first ten minutes or so.

This will into eat your resin if you don't let it run down the drain - especially noticeable with only a ten inch vessel too.

Also every time you switch on I would run to waste for about five minutes as the same thing will happen to a lesser extent.

When I had a similar set up (300gpd) I would just disconnect the pipe between the RO and the resin and stuff it in a watering can for a few minutes then reconnect.  The more "prufeshnyall" will install a branch  pipe and taps to run it to drain for a while.

 

[Suffolkcleaners]

Thanks guys. My tds reading before di vessel is around 20 so not pure enough for my liking.

Just checked ibc tank and its 36 hours now and done 900 litres(as turned off over night now) so not too bad.

Will definitely look into getting a bigger di and a pump.

I also have an internal pump which sits at the bottom of the tank which you plug in. Fills up a barrel really quickly but haven't tested how low the tank will get before it starts sucking up air as I know this can happen.

How do other people get on with drawing the water out? Do you always need to have a certain amount left in the ibc?

[Dave Willis]

I have had my booster pump before the prefilters for the last ten years so just wondered what difference it could possibly make.