RO/DI yield Help

thanhjenn · 10/05/2009, 12:46 AM

Bought Aquasafe unit while back. Being getting very poor results (<1gpd) rated for 100gpd. Water pressure is 80 psi. What can i do to increase my yield other than buying a booster. Appreciate the suggestion.

kentlighting · 10/05/2009, 02:05 AM

Hows your waste water, sounds like you might need a new RO membrane.....

thegrun · 10/05/2009, 07:47 AM

How long ago is "while back"? It sounds like your RO membrane is clogged, they should last a couple of years, but if your tap water is dirty and you don't maintain your pre-filters they can go bad quicker.

thanhjenn · 10/05/2009, 10:18 AM

have been poor output since day one. not sure what you mean by waste result.

Misled · 10/05/2009, 10:27 AM

What is your water pressure???

tat2shawn · 10/05/2009, 02:31 PM

The waste water is produced when you make RO water. You will usually get about 3 to 4 times more waste water than RO water. You do have this waste line hooked up and running into a drain, right?

kentlighting · 10/05/2009, 02:38 PM

Exactly what Shawn said.... i would think trying a new RO membrane would be the cheapest thing to try first. do you have a flush valve on your wast water line? if you dont kits are sold for a couple of bucks with instructions as how/where to hook them up. I open my flush valve after every batch of RO/DI water. It helps remove build up that has formed on the RO/DI membrane.

Misled · 10/05/2009, 04:15 PM

Quote:

Originally Posted by kentlighting

i would think trying a new RO membrane would be the cheapest thing to try first.

Quote:

Originally Posted by thanhjenn

have been poor output since day one.

Not really. As the OP said, poor output since day one. You may have it connected wrong or your pressure may be too low to push water through it. Get a pressure gauge and see what you have first if you're sure it's hooked up right. Where did you get the unit from and when????

lordofthereef · 10/05/2009, 04:28 PM

Quote:

Originally Posted by thanhjenn

Water pressure is 80 psi.

Not sure why you all keep asking what the water pressure is LOL. I think mine runs at about 65-70 psi and I get about 4 gallons an hour which is roughly 100gpd. My guess is something is just not seated correctly in there. Are you actually getting 0 TDS out?

Misled · 10/05/2009, 04:38 PM

Sorry, my bad, I didn't see that. What lord said is what I'd check next. Remove the membrane and make sure it seats all the way in when you put it back.

lordofthereef · 10/05/2009, 05:16 PM

Heh. I realize I may have sounded a bit jerkish on that last post. Was not my intention

Misled · 10/05/2009, 05:28 PM

Not to me. I just didn't see that. I think it was the boster pump that threw me off. With 80 lbs of pressure, the thing should be flowing fine. I was wondering why no one else was talking about the water pressure. lol

thanhjenn · 10/06/2009, 12:42 AM

there is a waste water line. i will check the membrane to see if in correctly. I may just have to invest in another member. are they universal. i orig bought on ebay via aquasafe. thanks for the replies guys.

thanh

lordofthereef · 10/06/2009, 12:26 PM

yeah you should be able to just buy another membrane. They are generally rated something like 50 75 and 100 gpd but they should all fit in your unit.

anyuser · 10/06/2009, 03:01 PM

If it has been like that since day 1 then I'd definitely take a look at how it's hooked up and remove the filter to make sure it's seated properly and that nothing is clogging it. An RO membrane should last several years.

thegrun · 10/06/2009, 03:15 PM

I wonder if the backflow preventer is bad.

10/05/2009, 12:46 AM	#1
thanhjenn Registered Member Join Date: Aug 2009 Location: edmonton Posts: 122	RO/DI yield Help Bought Aquasafe unit while back. Being getting very poor results (<1gpd) rated for 100gpd. Water pressure is 80 psi. What can i do to increase my yield other than buying a booster. Appreciate the suggestion.

10/05/2009, 02:05 AM	#2
kentlighting Registered Member Join Date: Dec 2008 Location: Chicago IL Posts: 245	Hows your waste water, sounds like you might need a new RO membrane..... __________________ Will Kent Lighting Designer [IMG]http://www.rowe lab.com/AquaController/sig.php?n=kentlighting[/IMG] Current Tank Info: 90 Gallon reef

10/05/2009, 10:27 AM	#5
Misled RC Mod Join Date: Oct 2006 Location: Pittsburgh, Pa Posts: 11,440 Blog Entries: 11	What is your water pressure??? __________________ Jesse I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.

10/05/2009, 02:38 PM	#7
kentlighting Registered Member Join Date: Dec 2008 Location: Chicago IL Posts: 245	Exactly what Shawn said.... i would think trying a new RO membrane would be the cheapest thing to try first. do you have a flush valve on your wast water line? if you dont kits are sold for a couple of bucks with instructions as how/where to hook them up. I open my flush valve after every batch of RO/DI water. It helps remove build up that has formed on the RO/DI membrane. __________________ Will Kent Lighting Designer [IMG]http://www.rowe lab.com/AquaController/sig.php?n=kentlighting[/IMG] Current Tank Info: 90 Gallon reef

10/05/2009, 04:38 PM	#10
Misled RC Mod Join Date: Oct 2006 Location: Pittsburgh, Pa Posts: 11,440 Blog Entries: 11	Sorry, my bad, I didn't see that. What lord said is what I'd check next. Remove the membrane and make sure it seats all the way in when you put it back. __________________ Jesse I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.

10/05/2009, 07:47 AM	#3
thegrun Registered Member Join Date: Dec 2008 Location: Garden Grove, Ca Posts: 17,023	How long ago is "while back"? It sounds like your RO membrane is clogged, they should last a couple of years, but if your tap water is dirty and you don't maintain your pre-filters they can go bad quicker.

10/05/2009, 10:18 AM	#4
thanhjenn Registered Member Join Date: Aug 2009 Location: edmonton Posts: 122	have been poor output since day one. not sure what you mean by waste result.

10/05/2009, 02:31 PM	#6
tat2shawn Registered Member Join Date: Jan 2003 Location: Northeast, PA Posts: 265	The waste water is produced when you make RO water. You will usually get about 3 to 4 times more waste water than RO water. You do have this waste line hooked up and running into a drain, right?

10/05/2009, 05:16 PM	#11
lordofthereef One reef to rule them all Join Date: Sep 2009 Location: Leominster, MA Posts: 5,299	Heh. I realize I may have sounded a bit jerkish on that last post. Was not my intention

10/05/2009, 05:28 PM	#12
Misled RC Mod Join Date: Oct 2006 Location: Pittsburgh, Pa Posts: 11,440 Blog Entries: 11	Not to me. I just didn't see that. I think it was the boster pump that threw me off. With 80 lbs of pressure, the thing should be flowing fine. I was wondering why no one else was talking about the water pressure. lol __________________ Jesse I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.

10/06/2009, 12:42 AM	#13
thanhjenn Registered Member Join Date: Aug 2009 Location: edmonton Posts: 122	there is a waste water line. i will check the membrane to see if in correctly. I may just have to invest in another member. are they universal. i orig bought on ebay via aquasafe. thanks for the replies guys. thanh

10/06/2009, 12:26 PM	#14
lordofthereef One reef to rule them all Join Date: Sep 2009 Location: Leominster, MA Posts: 5,299	yeah you should be able to just buy another membrane. They are generally rated something like 50 75 and 100 gpd but they should all fit in your unit.

10/06/2009, 03:01 PM	#15
anyuser Registered Member Join Date: May 2007 Location: Georgia Posts: 40	If it has been like that since day 1 then I'd definitely take a look at how it's hooked up and remove the filter to make sure it's seated properly and that nothing is clogging it. An RO membrane should last several years.

10/06/2009, 03:15 PM	#16
thegrun Registered Member Join Date: Dec 2008 Location: Garden Grove, Ca Posts: 17,023	I wonder if the backflow preventer is bad.