- Joined
- Aug 11, 2013
- Messages
- 292
- Reaction score
- 117
I won a, I forget the name, RO/DI system at MACNA. After correctly flushing the RO membrane and then installing the DI resin, I was only able to make about 45 gallons of DI water before going through all of the DI resin. I assumed that it was just a cheap RO/DI system and low supply water pressure.
Recently, I picked up a used IceCap 4 Stage Smart RO/DI system, which includes a booster pump. Although the unit was only a year old and performing perfectly for the previous owner, when I installed the system, I was seeing 35-40 TDS after the RO membrane. I decided to replace all of the filters and RO membrane. I used a brand new AquaFX 1 micron sediment filter, AquaFX 5/10 carbon block, and Dow FilmTec 75 GPD BW60-1812-75 RO membrane (99% rejection rate). After flushing the RO membrane, I see no improvement and still getting 35-40 TDS after the RO membrane.
Obviously, I would use way too much DI resin with a 35-40 TDS. It appears that something is not functioning correctly.
Any help would be greatly appreciated!
RO/DI System Source Water
TDS = 550 ppm
Hardness = <1 grain per gallon (after a large water softener)
Pressure = 40-60 PSI, but the booster pump brings it up to 80-90 PSI
Recently, I picked up a used IceCap 4 Stage Smart RO/DI system, which includes a booster pump. Although the unit was only a year old and performing perfectly for the previous owner, when I installed the system, I was seeing 35-40 TDS after the RO membrane. I decided to replace all of the filters and RO membrane. I used a brand new AquaFX 1 micron sediment filter, AquaFX 5/10 carbon block, and Dow FilmTec 75 GPD BW60-1812-75 RO membrane (99% rejection rate). After flushing the RO membrane, I see no improvement and still getting 35-40 TDS after the RO membrane.
Obviously, I would use way too much DI resin with a 35-40 TDS. It appears that something is not functioning correctly.
Any help would be greatly appreciated!
RO/DI System Source Water
TDS = 550 ppm
Hardness = <1 grain per gallon (after a large water softener)
Pressure = 40-60 PSI, but the booster pump brings it up to 80-90 PSI