Spot Free Rinse Question

[MDrost1]

I have an older GinSan Water Lovers SFR. It was over hauled last fall and has been running great. It is about the six month mark, so I swapped out my 5 micron filter. My TDS reading went from 20 to 70! Any thoughts? Thanks!

 

[MEP001]

Changing the prefilter should not have done anything to make the TDS change. Did you check to make sure your water is still soft?

 

[MDrost1]

I will check that today. My regular rinse is at about 160ppm. My spot free about 66ppm now. I just thought it was weird that it spiked after my filter replacement.

Is there any truth in "brass fittings" contaminating the spot free tank? A few weeks ago we replace the the plastic barbed fitting that connects the make water pump with the tank. There seems to be brass everywhere on this system. I figure id ask.

 

[MEP001]

It won't contaminate it in the short time it's in contact with the brass, but the RO water will eventually erode brass fittings. I have more issues with presoak eating brass than with RO doing it.

 

[mrfixit]

How long ago was the previous reading you mentioned?

I would open the flushing valve whenever repressurizing the system to avoid water hammer that could damage a membrane.

 

[MDrost1]

Turn out my reject valve was stuck. I was getting a bit of the reject in my tank. Just twisted the valve, readjusted to the proper ratio and we are back to 12ppm.