Troubleshooting Guide For The System - SpectraPure MaxPure MPDI RO System Installation And Operating Manual

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).
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2167 East Fifth St, Tempe, Arizona 85281
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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.
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