Installed brand new BRS 7-stage RODI pro 150GPD water saver with booster pump. And have run ~120 gal product, but I don’t think it is working optimally. Still only gets to 8ppm TDS after membrane. While I do get 0 TDS after DI, I am only getting 95% rejection rate after membrane versus the 99% advertised. Seems like this will just eat up my DI…. I also am getting more product than waste (see test below).
I did open up the membrane housings and inspect seals - all looks to be in order.
I performed a 15 minute bucket test with waste in one and produced in the other.
Inlet: 88 psi, 70 deg F
TDS: Inlet - 174 / post membrane - 8 / post DI - 0 (95%)
Waste: 306 oz
Produced: 344 oz
Ratio: 306/344= 0.89
Could water be bypassing the membrane causing higher TDS and lower ratio?
I did open up the membrane housings and inspect seals - all looks to be in order.
I performed a 15 minute bucket test with waste in one and produced in the other.
Inlet: 88 psi, 70 deg F
TDS: Inlet - 174 / post membrane - 8 / post DI - 0 (95%)
Waste: 306 oz
Produced: 344 oz
Ratio: 306/344= 0.89
Could water be bypassing the membrane causing higher TDS and lower ratio?