SpectraPure
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
®
10
Product Water - Low Production Rate
Cause
Corrective
Action
Plugged pre-filters
Replace pre-filters
Low water temperature
Heat feed water or use higher GPD membrane
Low water pressure
Use booster pump or use higher GPD membrane
Fouled membrane
Replace membrane
MEMBRANE TROUBLESHOOTING GUIDE
The following chart illustrates the procedure for determination of RO membrane
performance. However, the chart represents only rough guidelines for determin-
ing performance of RO membrane. Depending on your tap water chemistry, the
rejection characteristics of the membrane may vary significantly.
Method of Calculate %
Test Results
Conclusion
Testing
Rejection
TDS/
Measure feed water (X)
Is Rejection
No - Replace Membrane
Conductivity RO product water (Y)
greater than
Yes - Membrane OK
Tester
for TDS/Conductivity
95% ?
Alkalinity
Measure feed water (X)
Is Rejection
No - Replace Membrane
Test Kit
RO product water (Y)
greater than
Yes - Membrane OK
for
Alkalinity
90%
?
Hardness
Measure feed water (X)
Is Rejection
No - Replace Membrane
Test Kit**
RO product water (Y)
greater than
Yes - Membrane OK
for
Hardness
90%?
**Caution: This test is will not work on softened water sources.
TROUBLESHOOTING GUIDE:
