RO unit help and suggestions..

[DC Reefer]

did you make sure the bypass to flush the Membrane is closed? if not you will get a lot of waste water and very little RO water.

 

[Philly Reefer]

Today I measured all parameters. Water inlet 61F. Waste production 850mls per minute.
Product 75mls per minute.
Based on the 52psi, and the temperature I should be getting about 50 gallons a day. I'm getting 25 gallons a day.
Inlet TDs 54, ro out 0.00.
Something is not right. Have a support message into spectra pure.
Tom

Your TDS before going in the DI resin is 54?
Thats way to high. Ro Membrane has 95%-98% rejection rate. So that makes your tap = 900 TDS.
Are you using well water?
You will burned through your DI resin.

BTW you didn't say what stages is your DI resin.
I would think its 4 stage
You might need to add more.
And a booster pump

 

[tomb18]

Hi,
I replaced the flow restrictor with the one with less restriction and it now outputs 85ml per minute. No real change.
Tom

 

[tomb18]

Btw, this is the unit with the automatic bypass. Perhaps something is not right with the unit?

 

[Snoopy 67]

I would call Spectrapure, I have done so a few times & they are very helpful.

 

[tomb18]

Well upon talking with Spectra pure, I mentioned that the unit has the automatic flush. They said they haven't made that unit in 3 years. If the membrane has been sitting there for 3 years it is dried up. Sure enough, the date on the membrane is March 2017.
So contacted Amazon vendor and asked for a partial refund to cover the cost of the replacement. I would hate to have to return the whole wet unit.
Tom

 

[tomb18]

The vendor (Critter Cove Pet Supplies) refuses to refund the cost of a new membrane. They say it has no shelf life when a simple google search will show it is from 1 to 2 years when sealed. Not to mention the fact that Spectrapure themselves have told me it is expired.
I am hoping that if Spectrapure cannot get this company to come clean they will give me a credit for future purchases.

 

[tomb18]

Your TDS before going in the DI resin is 54?
Thats way to high. Ro Membrane has 95%-98% rejection rate. So that makes your tap = 900 TDS.
Are you using well water?
You will burned through your DI resin.

BTW you didn't say what stages is your DI resin.
I would think its 4 stage
You might need to add more.
And a booster pump

TDS on input (from the wall) is 54. It is a 4 stage.
The membrane is expired.