The flow restrictor goes in the waste line, if you bought one from Spectrapure it will be shipped untrimmed and loose. It will look like a piece of spaghetti with a small flange on one end which inserts inside the waste line. After flushing the system you will test the waste ratio according to their directions then trim the restrictor with a new single edge razor blade for an exact 4:1 waste ratio.
Spectrapure has good plumbing directions on their site under the Tech Support section, you can download one of them and follow all the lines and color conventions.
If you have one dual inline TDS meter place the IN probe after the RO membrane but before the DI and the OUT probe after the final DI so you get RO TDS and RO/DI TDS. If you have two meters then install one IN probe after the carbon/before the RO, the OUT probe after the RO, the other IN probe after the first DI and the OUT probe after the final DI so you can monitor each DI independently.
Spectrapure is the only manufacturer or vendor I am aware of that treats all their RO membranes with a special wet process, bench tests them for performance then ships them wet in a sealed bag. All others I am aware of ship dry off the shelf untreated and untested membranes. The treatment process is said to produce an extra 1 to 2% rejection rate and with their Select series they guarantee the performance in writing. To put that in perspective, that 2% increase DOUBLES the life of your DI resin no matter what resin you use.
Last edited by AZDesertRat; 09-01-2010 at 11:24 PM.
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