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dadstank

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well after last night's episode i was determined to hook the unit up and I have succeded!!!...

does it really take this long to fill up a 5 gallon bucket?!?!!?
 
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Anonymous

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It depends on the RO unit, Your water pressure, and the amount of crud in your water...

So, my answer is


Maybe?


:lol:


Congratulations on a job well done!
 

smontanus

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Its a good feeling when you finally wrestle these problems into submission. Congratulations! My unit was super slow at first too, now it hums along at almost 60% rated output. I think there has to be some throughput at the RO membrane before it picks up speed. Water temp has a lot to do with it also, most units rated GPH is at 70F I think.
 

FragMaster

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Actualy I think most units are tested around 60 deg f.
I could be wrong or it could just be my unit is the exception ?


Congrats!
Dont be put off by the excessive by pass through your waste tube either.
I use that water for my garden and house plants. Better than flushing it! LOL!!! After a month or so there will be less waste water, and more pure water. Also dont forget to throw out the 1st 10-20 gallons you make!
(depending on your units rated capacity.)

You can also buy a small pump to up the pressure and boost th eout put of yor RO system for around $85 bucks from most vendors.
Ususaly ups it tothe aproximate claimed GPH.
(Most house hold water pressure is not enough to utelize the systems full capacity).
 

smontanus

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Actualy I think most units are tested around 60 deg f.
I could be wrong or it could just be my unit is the exception ?

I bet neither of us are, probably another marketing shell game. I've got a captive purity 4 stage 35GPH, the manual says that was determined at 65PSI and 70F. I guess what I probably have is a 25GPH at 60F.
 
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Anonymous

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knucklehead":2roksust said:
It depends on the RO unit, Your water pressure, and the amount of crud in your water...

...and the temperature of the source water - cold = slow
 
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Anonymous

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FragMaster":258q49ma said:
Depends on the unit. an Eskimo RO unit runs around 250GPH with 30 deg source water. ;)

And it actually gets slower if the water is warmer? How does that happen?
 
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Anonymous

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30 degree huh?

what do they use to move it around? A Pick Axe?
 

dadstank

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thank you thank you!!!

my tap water running throught the system is 47 degrees. i have the system running at 30psi, or about 2:1. i have heard that can hurt the membrain. any thoughts?
 

dadstank

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thank you thank you!!!

my tap water running throught the system is 47 degrees. i have the system running at 30psi, or about 2:1. i have heard that can hurt the membrain. any thoughts?
 

FragMaster

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More reading and less typing would serve you better my friend.
:)
I DID NOT say it gets slower with warmer water.
I DID SAY it depends on the unit.
Case in point:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dl ... 7736013351
It uses double the membranes so it filters the same amount of water that a unit using 70 deg tap water would produce. It is specificly made for those who live in colder climate regions.
Now shut your pie-hole! LOL!!!!! :)
I know I was off by TEN degrees on the water temp ! LOL!!
It was 40 and not 30 LOL!!!!!! I cant beleive I let that one slip! LOL!!!
Freezing temp is 32 LOL!!!
 

smontanus

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dadstank wrote:

my tap water running throught the system is 47 degrees. i have the system running at 30psi, or about 2:1. i have heard that can hurt the membrain. any thoughts?

I'm not sure about that, 30psi doesn't sound bad...but I'll let somebody with more knowledge chime in. One note you might consider, you need to make sure the unit is constantly full, even when not in use. According to my units manufacturer letting the RO membrane dry out severely degrades it. Mine seems to stay full just shutting off the source. Just thought you might be interested.
 

FragMaster

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My eternal answer to all questions regaurding water temperature and rodi production, as well as, PSI is this:

IT DEPENDS ON THE UNIT! LOL!!
We need specs, as in what type of unit it is ( make and model as well as GPH). With out this it is futile to make any sugestions or assumptions.
:)
 
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Anonymous

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dadstank":2orvlcnu said:
thank you thank you!!!

my tap water running throught the system is 47 degrees. i have the system running at 30psi, or about 2:1. i have heard that can hurt the membrain. any thoughts?

You can send the input through the sump or something warm and it will help the flow through the membrane.

30psi is pretty low. If you warm up the water and the flow is still too slow then you might consider a booster pump to raise the PSI.
 

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