Aquasafe RODI ?

[strat]

i bought a used aquasafe RODI and im trying to set it up... it didnt come with any manuals and its my first, doh.. anyways, i changed the three main filters on the bottom of the unit. my questions are, with new filters how much flow will i be getting out of the output (with a compression T fitting, not the needle aka dracula valve setup)? and should i bypass the final filter for taste and odor for tank water?? thanks alot


kris

ps, theres one more chamber that has two outputs after it, one being the waste water and the other going to the DI and final filter part. that chamber opens but i couldnt get the filter out (i didnt want to pull too hard) and in the RO filter change pack that i got it only had the three main filters on the bottom..... any ideas what this filter is and do i need to change it and will it affect flow.. thanks a bunch

[strat]

one more thing, im presuming that the flow valve on the waste water should be closed all the way for back pressure?? and whats the open position for, rinsing? thanks

[Warnberg]

Well I don't know about that unit, but i can tell you on mine (Typhoon III) there is an input (for your water) and waist water outlet (opened) and RO out (for RO only) and a DI out (for RO/DI output) then there is a flush, to flush the system. There are several valves on the system as well. Now I do not know what your system has on it, but I can tell you that the waist water valve is OPEN during normal operation, you should get about 1 gal of RO/DI and about 3 to 4 gallons of waist.

Dave

[strat]

thanks dave, when the waste valve is closed theres still water flow. it seems to be about 10 to 1 in that position whereas opened its take 5 minutes to fill a shot glass of RODI water and probably 100 to 1 flow of waste water. makes me think its a flush position... i wonder if theres air stuck inside or something...hmm i dunno. apparently theres an e-manual for my unit out there so if anyone has it please lemme know

thanks again

kris

[Warnberg]

Just so you know, I did a quick search for it and couldn't find anything. Is there a model number for the unit, maybe that will help.

Dave

[strat]

i think i found it on reefcentral. its pretty vague but answers some of my questions. apparently it is a flush valve. turns out the three filters i changed are the prefilters and not the RO filter, so i dont know if im getting good enough water.. guess i need to buy the actual ro filter and di filter... that probably explains the really slow flow. thanks for the help dave

kris

[Gina]

We have an AquaSafe RO/DI unit.

Originally Posted by strat

and should i bypass the final filter for taste and odor for tank water?? thanks alot:

If you don't have a replacement for that filter you could bypass it.

Originally Posted by strat

ps, theres one more chamber that has two outputs after it, one being the waste water and the other going to the DI and final filter part. that chamber opens but i couldnt get the filter out (i didnt want to pull too hard) and in the RO filter change pack that i got it only had the three main filters on the bottom..... any ideas what this filter is and do i need to change it:

This chamber holds the RO membrane.

Originally Posted by strat

and will it affect flow.. thanks a bunch

You should check the output after the RO membrane and before the DI filter with a TDS meter. Then test your tap water for TDS. If the RO membrane is not removing at least 90% of the TDS then it may need rinsing or replacing.

Originally Posted by strat

one more thing, im presuming that the flow valve on the waste water should be closed all the way for back pressure?? and whats the open position for, rinsing?

Yes on both counts. We usually open the valve all the way to flush the membrane off (rinse) for a few minutes before closing the value to start producing water.

[Witfull]

does this help?

[strat]

thanks gina and witfull. great info and diagrams (wow) so, when one flushes the membrane, is it the RO filter being flushed then, or is it just the 3 pre-filters..?? im going to go try flushing for about 30 min to see what happens. its made only about 1.5 gallons in 3 hours of use? is that really slow? thanks so much, im getting right down to the wire, i will finally have a tank setup.. ive spent all day cleaning and labelling cords and setting up lights etcetec. its gonna be awesome thanks again

kris

[Gina]

It is the membrane being flushed. A gallon and a half in three hours is pretty slow. There are a few factors that could explain that.

• Water pressure
• Water temperature
• The membrane capacity

The membrane capacity is base on ideal condtions (standard household water pressure and a water temperature of about 70 degrees F.). This time of year you can expect a marked decrease in output due to the incoming water temperature. If you also have lower water pressure and are using a 50 GPD membrane then I could see only getting a gallon and a half in 3 hours.

[strat]

yeah the water is fairly cold this time of the year. the pressure is pretty strong in this house, and i was told that it was a 100 GPD, anyway to tell? well im still rinsing, im gonna also run the prefilters only for another ten after that and then see what happens.

THANKS

kris

[mattie]

wow wit thats an awesome pic of how to do it
i own an aquasafe 100gpd ro di filter it works great about 70/30 water to waste if its real bad and the system is new you may not have enough water pressure and you may require a pump to increase the pressure. i know aquasafe sudgests have a pressure gauge to discover you water pressure and a tds meter to monitor the condition of the filters in the unit