EcoWater ELC-1500, User Manual

Page: 24 / 34

ELC
– Series User Manual
MKTF
– 506-A
24 03/18
TROUBLESHOOTING
SYMPTOMS POSSIBLE CAUSES CORRECTIVE ACTION
Low Inlet Pressure
Low supply pressure Increase inlet pressure
Cartridge filters plugged Change filters
Solenoid valve malfunction Replace solenoid valve and/or coil
Leaks Fix any visible leaks
Low Permeate Flow
Low inlet flow Adjust concentrate valve
Cold feedwater See temperature correction sheet
Low operating pressure See low inlet pressure
Defective membrane brine seal Inspect and/or replace brine seal
Fouled or scaled membrane Clean membranes
High Permeate Flow
Damaged product tube o
–rings
Inspect and/or replace
Damaged or oxidized membrane Replace membrane
Exceeding maximum feedwater temperature See temperature correction sheet
Poor Permeate Quality
Low operating pressure See low inlet pressure
Damage product tube o
–rings
Inspect and/or replace
Damaged or oxidized membrane Replace membrane
Membrane Fouling
Metal oxide fouling
Improve pretreatment to remove metals.
Clean with acid cleaners
Colloidal fouling
Optimize pretreatment for colloid
removal. Clean with high pH anionic
cleaners
Scaling (CaSO4, CaSO3, BaSO4, SiO2)
Increase acid addition and antiscalant
dosage for CaVO3 and CaCO4. Reduce
recovery. Clean with acid cleaners
Biological fouling
Shock dosage of sodium bi
–sulfate.
Continuous feed of sodium bi
–sulfate at
reduced pH. Chlorination and de
–
chlorination. Replace cartridge filters
Organic fouling
Activated carbon or another
pretreatment. Clean with high pH cleaner
Abrasion of membrane by crystalline
material
Improve pretreatment. Check all filters
for media leakage