[SteX13]

Hi,

I purchased a 4 Stage 100 gallon a day R/O unit.

http://www.ro-man.com/shop/product_info.php?products_id=318

I have followed instructions and the water is flowing through great until it gets to the membrane.

The PSI is 60 but at the other end there is not enough flow or pressure to go to the DI section.

I have a TDS of around 250. I tried it without the membrane going through the 2 filters than through DI and the reading went to 20 ish.

Before I cleaned the windows at 250 and it left lots of minerals

I cleaned at 20 ish and it left little but still noticeable amount so guessing I need a reading of 0.

Please can someone advise to why the water will not flush through the membrane?

Regards,

Ste. 

[d s windowcleaning]

these 100 gpd units are just a waste of money mate they produce very little pure water .

[SteX13]

How else you meant to do it?

[dd]

I have a 300gpd ro-man unit that works well and just use the RO water (no resin) which is around 003 tds.

I would guess the 100gpd unit will produce around 200l a day, perhaps a bit less, and significantly less in the colder weather.

[SteX13]

That doesn't solve my problem mate.

Just informs me of what you have and how much you think I can produce a day lol

[R W C™]

Its probs producing water so slowly that it will take a while to start producing water, a mate of mine had one of these for all of 30 mins as I could go toilet quicker then them things, thats why I use a 4040, 1000ltr in 6 hours...

[dd]

My unit is the same as yours with the addition of an extra 2 100gpd membranes. My water pressure is also similar to yours.

IMO if the membrane works efficiently you should not need to use resin.

To work our your daily production rate time how long it takes the RO to produce 1l of pure water and do the math.

As long as it is not less than 150l per day and the tds is in single figures then the unit is OK. When new the membrane needs a good flush and it can take a few days for the tds reading to reach its optimum.

[Tom White]

Ste,

Is there a little blue (well mine's blue) nob that you twist on your RO?  Try twisting it, if there is.  You want the waste water to be at a minimum; not jetting out.

I remember telling someone else this; his problem was that his RO was set to flush, therefore producing next to none pure water.

[SteX13]

Its not producing water at all.

Its getting stuck going from the membrane to the DI. The DI doesn't even fill.

Tosh as above mate. I have tried with flush on and off.

Cheers.

[Tom White]

So there's water going into the RO, but none coming out?

Is that correct?

Pull the tubes out so that you can isolate where the problem is; follow the system around.

[SteX13]

I have and described above Tosh.

Blue pipe coming from the Carbon Block goes to the pressure gauge and than through the membrane.

Waste comes out of the green pipe and waste valve when turned on fast flow off slow flow.

The pressure gauge is reading 60 psi.

It should flow from the blue pipe at the end of the membrane to the DI.

I have pulled out this pipe and it just drizzles.

No water reaches the DI.

I tried doing it without the membrane going from the Carbon Block straight to the DI but the TDS is 20+

Great improvement from 250 but it needs to pass through the membrane to get close to zero.

Cheers.

[Tom White]

It should flow from the blue pipe at the end of the membrane to the DI.

I have pulled out this pipe and it just drizzles.

No water reaches the DI.

I haven't really a clue what's wrong to be honest.

Even if it just 'drizzles' out of the RO, it should eventually fill the DI and produce pure water; albiet slowly.

Can you configure so that you have your tap putting water straight into your DI?  If then no water goes into the DI, there's obviously something blocking it.

Other than that I'm clueless (many would agree).

I hope someone comes along soon with a better solution.

[SteX13]

Okay thanks for your input

[SteX13]

Anyone else please?

[d s windowcleaning]

Its not producing water at all.

Its getting stuck going from the membrane to the DI. The DI doesn't even fill.

Tosh as above mate. I have tried with flush on and off.

Cheers.

your ro is NOT up to the job simple as . you will be lucky to fill 25 ltrs in 24 hrs with what you are using ,  I BET  youve got plenty of waste water but drips on pure .

[SteX13]

Well what does everyone else use?

Its supposed to do 100 gallons per day. So yo saying its false advertising?

I am sure its fine equipment to use its just not working properly.

[d s windowcleaning]

Well what does everyone else use?

Its supposed to do 100 gallons per day. So yo saying its false advertising?

I am sure its fine equipment to use its just not working properly.

yeah it will do 100 gpd of water but most of the water is waste . when i started with wfp around 6 years ago i was in the same situation you are , i got a booster pump and that didnt make much diffrence so more wasted money . take a look at a 200 gpd ro units . the equipment you are using will be fine no doubt about that but its just not up to the job . either get a upgrade kit or a bigger unit and your prodution of pure will increase .

[SteX13]

Still nobodys understanding that the water is not going from the membrane to the DI. If it was maybe it would produce water.

[dave carroll]

is the DI canister the right way up? try taking it out and run it empty. is the pipe connected to the 'in' & not the 'out'?
  don't forget that the GPD figure is american not imperial also these are with everything perfect. ie pressure, temperature and a few other things that i can't remember. hope you get it sorted, i know the frustration you feel as i've had to up grade from 200 to 300 gpd and booster pump.

 dave

[Blue Frog Systems]

Is the membrane in the right way ? Sounds to me that you have put it in backwards and its just rejecting.

The point about the 100 gpd being naff is true. I bought a 100gpd ro after doing my maths. Turned out it was 100gpd at a certain water temp and specific psi. You really need to upgrade to a 300 sooner rather than later or you just wont be producing enough water.