SpectraPure®Inc
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15
SpectraPure
®
In order to accurately determine the condition of the RO Membrane, re-
configuring the DM1 TDS Meter, provided with this unit, is required.
Before performing the following membrane test with the DM1 Meter, the
waste to product water ratio must be 4 to 1 or greater (see page 8-9).
Procedure:
1. Disconnect the BLACK line from the first stage housing (Sediment Filter)
2. Next, disconnect the “IN” Probe Tee of the DM1 meter and
connect it to the end of the black line. (This step will allow you to
determine the TDS of your tap water)
See page 10 for removal of
tubing from push fittings.
3. Slowly turn the tap water on. Be careful where you point the open
fitting of the tee. Once you get a good flow coming out of the end
of the tee you can test the water:
- TAP WATER TDS READING:_______________
4. Once you obtain the tap water TDS reading, reconnect the
“IN” Probe Tee back to its original location.
5. Re-connect the BLACK line to the first stage housing
(sediment filter) and run water through the system for 15 min.
6. Note the reading on the meter with the setting still in the
“IN”
position:
- RO WATER TDS READING:_______________
7. Follow the calculation located on pages 19-20.
Note: All water sources are different and are subject to changes in conductivity
from season to season which could affect the monitor reading depending on the
time of the year. For this reason we recommend the use of a conductivity tester in
order to receive the most accurate measurement for determining the condition of
the RO membrane.
RO MEMBRANE DIAGNOSTIC:
