SpectraPure
Fig. A: System Components
Purity Monitor
.5 micron
MicroTec™
Sediment
Pre-Filter
(SF-MT-.5-
10)
.5 micron
Carbon
Block Pre-
Filter (CF-.5-
10)
INSTALLING THE WATER PURITY MONITOR
1.
Remove front cover from the monitor and connect the supplied 9-volt batery to the
snap terminals located on the circuit board (Fig. C). Support the battery terminals with
your finger while inserting the battery. For proper operation use only an ALKALINE type
battery.
2.
Insert the plug from the test probe cable into the jack on the monitor box.
3.
Locate the 8-position "dip switch" (Fig. B). Each of the internal settings corresponds to
a specific electrical conductivity level measured in micro-siemens (uS). The equivalent
natural water" TDS setting in ppm is shown below.
4.
Locate switch #7 on the selector switch. Slide (or push-in) the switch to the ON
position. Ensure that all remaining switches are in the OFF position. This is the
recommended setting to determine the condition of the #2 cartridge.
5.
Replace the front cover and fasten with the included screw. Locate monitor at an
easily accessible location within 3 feet of the test probe. Attach by peeling the
protective cover from the self-adhesive velcro tape and pressing onto the mounting
surface.
SpectraPure®Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
8
®
TFC RO Membrane
(TFC-XX)
Pressure
Guage
DI
Cartridge
#1
DI-SFCC-10
DI
Cartridge #2
DI-AR-DI-10
SpectraPure
TROUBLESHOOTING GUIDE FOR RO/DI SYSTEMS
1. Low production rate:
a. plugged pre-filters.
b. low water temperature.
c. low line pressure.
d. high TDS content.
e. fouled membrane.
f. plugged flow restrictor.
2. Zero production rate:
a. Missing flow restrictor.
b. Dried membrane.
c. Plugged flow restrictor.
3. Extremely high production rate:
a. Ruptured membrane.
b. Very high line pressure (> 90 psi).
4. Red light on purity monitor comes on:
a. Exhausted deionization cartridge.
b. Bad membrane & exhausted cartridge. ii. Replace membrane & deionization cartridge.
c. Faulty monitor/probe.
5. Pressure gauge does not register anything:
a. Missing flow restrictor.
b. Pressure gauge screwed in too far.
c. Plugged pressure gauge orifice.
d. Defective pressure gauge.
6. Low deionization cartridge life:
a. Defective membrane.
b. Low pressure (< 40 psi).
c. High CO2 levels in water (> 5 ppm).
d. High TDS in feed water (> 1000 ppm). iv. NO EASY SOLUTION.
e. High levels of silica, nitrates,
phosphates etc. in tap water.
f. High pH tap water (> 9.0).
SpectraPure®Inc .
Fax 480.894.6109 Fax us toll-free 1.877.527.7873
E-mail: spectra@spectrapure.com Visit us on the web www.spectrapure.com
®
i. Replace pre-filters.
ii. Heat feed water OR use higher GPD membrane.
iii. Use booster pump OR use higher GPD membrane.
iv. Use booster pump OR use higher GPD membrane.
v. Clean or replace membrane to restore flux.
vi. Replace flow restrictor & membrane.
i. Put flow restrictor in the yellow line.
ii. Try to restore flux using rubbing alcohol OR
replace membrane.
iii. Replace flow restrictor and clean/replace
membrane.
i. Replace it.
ii. Use a pressure reducing valve.
i. Replace cartridge.
iii. Replace monitor/probe.
i. Put flow restrictor in the yellow line.
ii. Unscrew pressure gauge one turn and retest.
iii. Clean orifice with a needle.
iv. Replace it.
i. Replace it.
ii. Use booster pump.
iii. Aerate RO product water or use a straight
anion cartridge ahead of DI cartridge.
v. Use straight anion cartridge ahead of mixed
bed cartridge.
vi. Acidify feed water to the RO membrane
to improve its rejection.
21
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