ro/di question

[egon]

i installed a 60g/d ro/di unit yesterday and was just wondering how long it usually takes for the output to reach its peak. i know that is runs slow at first until the membranes are hydrated, but how long does this usually take? it has been running for 12 hours now and i have only gotten 9 gallons of water. theinput pressure is 50lbs/in and i am unsure of the source water temp.

thanks in advance.

 

[dansemacabre]

It does depend on source water temp. We're pretty far north, my 100gpd comes nowhere close, but my source water temp is somewhere around low 50s to high 40s. I got about that much out of my unit, though I'm assuming my water temps are colder. So, yeah, I forget the best operating temp, I think it's in the 70s, but our cold water temps will most certainly cut performance.

 

[loganj]

Agreed. With a low water temp and a lower than optimum pressure, you won't get 60 gpd. I'm on well water so it's pretty cold...I also have about 40-45lbs pressure and I get around 40gpd out of a 100gpd unit. You could probably up the output by installing a booster pump, but you have to ask yourself if the increased output would be worth what the pump will cost you. You could also install an inline heater such as a Fireplug, but again, would increasing the output be worth the initial cost? If your unit will satisfy your needs as is, I would probably leave it alone. When it's time to change the RO membrane, you can install a 100gpd membrane and get a bit more flow. JMHO.

 

[fishfreek]

Like has been said above. Dont underestimate water temperature. This weekend the ground water must have been a little warmer than it had been all winter as I made a 25gal trashcan full in just a few hours time compaired to what it was doing in the dead of winter.

 

[egon]

thanks all,

i will contunue to monitor the output, seems to be better today, and decide at a later time if i want to make any adjustments to the setup.

 

[egon]

sorry, double post