RO/DI slow flow

<a href=showthread.php?s=&postid=6978494#post6978494 target=_blank>Originally posted</a> by bromion
Unfortunately, no. I bought it from someone on the boards who said he hardly used it at all. I contacted the manufacturer to see what they recommend. Worst case I'll try to return it to the seller or have to buy a new RO membrane. Grr.

Why not buy the right flow restrictor for your unit? It would probably be cheaper than a whole new membrane.
 
<a href=showthread.php?s=&postid=6978494#post6978494 target=_blank>Originally posted</a> by bromion
Unfortunately, no. I bought it from someone on the boards who said he hardly used it at all. I contacted the manufacturer to see what they recommend. Worst case I'll try to return it to the seller or have to buy a new RO membrane. Grr.
If a membrane is to be stored for a long time after beig used the manufacturers recomend storing it in the fridge to avoid bacterial growth on it so there is a chance the membrane might be pluged with it if it was not stored properly. If worst comes to worst you can buy a new membrane castridge for about $50.00 I recomend you get the 75 gpd one as it has better rejection (98%) than the 100 gpd one so your DI cartridges last about three times longer but you also may need to replace the restrictor to fit the new capacity.

http://theh2oguru.zoovy.com/product/TW301812-75
 
Well, I bought a new RO membrane and the system is producing water at the proper rate with a good ratio to waste. However, I am still seeing about 5-7 PPM rather than zero after the DI. Do I need a new DI resin, too?

Additionally, I purchased a float switch to stop the flow of DI water to my container. It's my understanding that the auto shutoff valve should stop the system from producing even waste water after the float switch activates. This is not occurring. The ASOV appears to be oriented correctly. Ideas why this might be?

Thanks,
Jason
 
What is the ppm at the ouput of the membrane compared to the ouput of the DI cartridge? Old exausted cartridges may release the impurities back.

The ASOV should stop the waste when the float activates. The way it works is by detecting the pressure increase in the ouput line. If it is installed correctly insure that the check valve is in the right position.
 
Sounds like you have several problems that you have not resolved. Budget priced systems come with low production filters, for small volume drink water use. Did you change out the carbon filters before you added the new membrane? I would also tell you your horizontal DI was long ago exhausted by your high TDS. with the 70's reading your DI cartridge would have produced less then 30 gallons of DI water.

Auto shut offs take a while to activate because your system needs to build pressure. It can take 5-10 minutes before the ASOV shuts the waste line off.

Fahz
 
Hey!

Hey!

Your system has been rough from the start.
It seems like there may be a few misconfigurations in the backend of the system and they all are fairly common and can be corrected by switching around a few hoses. Go ahead and give me a call tomorrow at 1 888 620 8894 and I will walk you through a troubleshoot on the unit. Ask for Bryan. Hopefully we can track down the problem.
 
it almost sounds as if the restrictor is connected to the product out. Could there be a faulty check valve? I never thought of using a JG valve as an adjustable restrictor.
 
SIXSTAGEDRAW.jpg
 
<a href=showthread.php?s=&postid=7117412#post7117412 target=_blank>Originally posted</a> by greg10
That is a very, very inexpensive RO system. I've paid more for replacement filters.

its 94.49 with shipping, if you are paying more than that for replacement filters, you are getting ripped off bad. Although im sure you have enough money that you don't care.
 
fahz,
That diagram really helped, since I had the check valve installed in the wrong location. When I first re-attached things, the ASOV stopped the system when full. Next time I used it, however, it did not.

I purchased more DI resin, which I'll hopefully get soon. Do I need a new ASOV too?
 
Thanks to all your help (and $70), my system now seems to be working perfectly. The TDS is zero and it shuts off properly. After all that, I replaced the RO membrane, the DI resin, and added a float valve. Let's hope it holds up for a while now!
 
Back
Top