[Paul H]

hi need some help on the following:-

1. Pure freedom trolley .. what operating flow rate does anyone else use or recommend...1 from the trolley itself 2. the trolley systen vam monted with 100 meter hose

2. RO Syytem ... what would recommend .. my 200 gpd is slow to say the least..am i best investing in something ekse

[Spruce]

Hi Paul,

Sort the waste to pure ratio out first then see. This is what you want for your current system fitted into the waste pipe.

http://www.ro-man.com/shop/index.php?route=product/product&filter_name=flushkit&product_id=309

There is a cleaner working around that has a 100 gpd R/O filtering around the clock into a couple of water butts and this is sufficient for him. Yes, you will use more water to begin with doing first cleans and learning the skill of using a water fed pole. But later you will learn to save water. My son prefers a backpack and uses about 250 liters of water a day. He give the window a quick once over with water on, switches water off, scrubs window and then puts water on to rinse.

We have a 300GPD RoMan unit which is the same as yours but with an extra membrane housing. 5 years ago I replaced the 100 GPD membranes with 150 GPD so we now have a 450 GPD R/O and process water into a 1000litre IBC tank with an automatic cutoff operating a solenoid valve. There is an add on kit that will increase the size of your current model R/O at very little cost.

150 GPD membranes = http://www.gapswater.co.uk/acatalog/AXEON-TF-1812-150--150-gpd-reverse-osmosis-membrane-1887.html
150 GPD upgrade kit = http://www.ro-man.com/shop/index.php?route=product/product&path=34&product_id=1816
150GPD membrane restrictor and flush kit =

http://www.ro-man.com/shop/index.php?route=product/product&filter_name=flushvalve&page=7&product_id=308

We have this type restrictor fitted onto the waste outlet pipe. I can't see the one on the site for 450 GPD.

RoMan is rather expensive with their membrane prices. Gaps water is much cheaper and sell good quality stuff.

Speak to June at GAPS - she will probably have all the things you will need to upgrade your current R/O.

Hope this helps.

[Paul H]

Hi Paul,

Sort the waste to pure ratio out first then see. This is what you want for your current system fitted into the waste pipe.

http://www.ro-man.com/shop/index.php?route=product/product&filter_name=flushkit&product_id=309

There is a cleaner working around that has a 100 gpd R/O filtering around the clock into a couple of water butts and this is sufficient for him. Yes, you will use more water to begin with doing first cleans and learning the skill of using a water fed pole. But later you will learn to save water. My son prefers a backpack and uses about 250 liters of water a day. He give the window a quick once over with water on, switches water off, scrubs window and then puts water on to rinse.

We have a 300GPD RoMan unit which is the same as yours but with an extra membrane housing. 5 years ago I replaced the 100 GPD membranes with 150 GPD so we now have a 450 GPD R/O and process water into a 1000litre IBC tank with an automatic cutoff operating a solenoid valve. There is an add on kit that will increase the size of your current model R/O at very little cost.

150 GPD membranes = http://www.gapswater.co.uk/acatalog/AXEON-TF-1812-150--150-gpd-reverse-osmosis-membrane-1887.html
150 GPD upgrade kit = http://www.ro-man.com/shop/index.php?route=product/product&path=34&product_id=1816
150GPD membrane restrictor and flush kit =

http://www.ro-man.com/shop/index.php?route=product/product&filter_name=flushvalve&page=7&product_id=308

We have this type restrictor fitted onto the waste outlet pipe. I can't see the one on the site for 450 GPD.

RoMan is rather expensive with their membrane prices. Gaps water is much cheaper and sell good quality stuff.

Speak to June at GAPS - she will probably have all the things you will need to upgrade your current R/O.

Hope this helps.

ok i will wrap my head around this

i have a flush / drain valve.. i ran it for a while then turned it off..connected my D/I vessel

i have fitted new pre filters

the flow is still rubbish.. I could PI55 harderIMO!... but the waste ratio has reduced ( from what i recall yesterday)

what next??

I'm thinking new pre filters .. new membranes...booster pump... may asw ell buy a better R/O unit??? if hat will help

as a thicko how would i test my tap PSI???

[Spruce]

Hi Paul
What is your reject water to pure ratio now?

The reason why I ask is that if the ratio is to high your R/O won't be producing enough water. The membranes need water pressure to work. If the pressure is being released through the waste pipe, then very little is going to be forced through the membranes to become pure.

You have a flush valve/tap already. Are you able to completely turn to flow to waste off? If so then you need to just open the tap enough to get your 3:1 waste/pure ratio. This principal of throttling the waste water with a tap is used on 40/40 R/O units. The reason why we use a restrictor is that it saves us having to set the system up again. (7 years ago RoMan used to have 2 different restrictors available and they used to recommend a 5:1 ratio waste/pure with high TDS input water readings. They advised then that pure production would be less if you used this restrictor.)

If I open the flush valve on my unit, I still produce pure, but very little.

One of the other things to consider is your water temperature. The water in the taps is still very cold, so your membranes will not produce water as quickly as when the water warms up a bit in summer.

Spruce

[Paul H]

Hi Paul
What is your reject water to pure ratio now?

The reason why I ask is that if the ratio is to high your R/O won't be producing enough water. The membranes need water pressure to work. If the pressure is being released through the waste pipe, then very little is going to be forced through the membranes to become pure.

You have a flush valve/tap already. Are you able to completely turn to flow to waste off? If so then you need to just open the tap enough to get your 3:1 waste/pure ratio. This principal of throttling the waste water with a tap is used on 40/40 R/O units. The reason why we use a restrictor is that it saves us having to set the system up again. (7 years ago RoMan used to have 2 different restrictors available and they used to recommend a 5:1 ratio waste/pure with high TDS input water readings. They advised then that pure production would be less if you used this restrictor.)

If I open the flush valve on my unit, I still produce pure, but very little.

One of the other things to consider is your water temperature. The water in the taps is still very cold, so your membranes will not produce water as quickly as when the water warms up a bit in summer.

Spruce

my unit is one of those compact pure freedom ones..

so if i dont close / open the valve fully either way it will even the ratio to a more acceptable level?? am i picking this up right?..

[gto]

yes it will improve the pruduction and reduce waste, but will still be very slow.
a booster pump will increase production slightly.
but its all down to membrane size, the larger the surface area of membrane the faster it will make pure.

you would be a lot better off in the long run buying a new larger RO, 300gpd minimum

[Spruce]

yes it will improve the pruduction and reduce waste, but will still be very slow.
a booster pump will increase production slightly.
but its all down to membrane size, the larger the surface area of membrane the faster it will make pure.

you would be a lot better off in the long run buying a new larger RO, 300gpd minimum

He could just replace the 2 x 100GPD membranes for 2 x 150GPD membranes (they are fully interchangeable) and would end up with the same result.

Edited:
If I were in his position I would get a 150 GPD upgrade kit from RoMan at £60.00 and 2 X 150 GPD membranes from Gaps at £30.00 ea rather than spending £230.00 plus on a new 450GPD unit. I bet Gaps will supply an upgrade kit cheaper anyway - I just can't see it on their website.

The first thing he needs to do is get that waste/pure ratio right.
I'm not familiar with the purefreedom units - does anyone know how they restrict the waste flow; is it an inline restrictor or is it done with a flow valve/tap? If its done on a tap then getting that ratio right is fairly straight forward - 3 units waste to 1 unit pure.

Further explanation to help you Paul as R/O can look quite complicated with all those pipes everywhere. You have 2 outlet pipes on your R/O - waste and pure. Connect the R/O up to the tap and run the system until you get all the air out. Get 2 identical containers - ie 2 litre plastic milk containers from your recycling bin - and put the waste pipe into one and the pure pipe into the other. Open the tap to get the R/O going. Once the 2 litre milk container is full from the waste switch the unit off and remove the pipes. Check how much pure water you have produced by measuring it. You should get 650ml of pure to 2 litres of waste.
Your aim is the throttle the waste water until you achieve this.

Spruce

[gto]

a new RO will also come with a booser pump, if he gets a VYAIR or similar.
which will give a good even water pressure, better filters, better mebranes and you also have a warranty.

you could waste plenty of money swapping bits around and trying to upgrade to RO.
when the new RO will give better results out of the box.

[Paul H]

a new RO will also come with a booser pump, if he gets a VYAIR or similar.
which will give a good even water pressure, better filters, better mebranes and you also have a warranty.

you could waste plenty of money swapping bits around and trying to upgrade to RO.
when the new RO will give better results out of the box.

my thoughts exactly...any recommendations then

[gto]

yes i have a Vyair 650gpd.

Vyair are good RO's, and good customer service.

[Paul H]

ok think / know my water pressure from tap is fine

have changed pre filters

going to try the membranes as i think once the flow is is good this unit will produce enough for me at the mo


so having changed pre filters will i see a difference in flow with new membranes?? ( i have no idea how long the current ones have been in for).. also can you tell if they need replaced looking at them??

Thanks