Hydroid
– Series User Manual
26
04/19
TROUBLESHOOTING
TECHNICAL ASSISTANCE
If technical assistance is required:
▪
Contact HydroLogic directly, toll-free 888-426-5644
▪
Prior to making the call, have the following information available:
▪
System installation date
▪
Serial number
▪
Daily log sheets
▪
Current operating parameters (e.g., flow, operating pressures, pH, etc.)
▪
Detailed description of the problem
SYMPTOMS
POSSIBLE CAUSES
CORRECTIVE ACTION
Low Inlet Pressure
Low supply pressure
Increase inlet pressure
Pre-filter is plugged
Change pre-filter
Solenoid valve malfunction
Inspect / replace solenoid valve and/or coil
Leaks
Fix any visible leaks
Low
PRODUCT
(purified water) Flow
Cold feedwater
See temperature correction sheet
Low operating pressure
See low inlet pressure
Fouled or scaled membrane
Replace membranes
Pre-filter is plugged
Change pre-filter
High
PRODUCT
(purified water) Flow
Damaged or oxidized
membrane
Replace membranes
Exceeding maximum
feedwater temperature
See temperature correction sheet
Poor
PRODUCT
(purified water) Quality
Low operating pressure
See low inlet pressure
Damaged or oxidized
membrane
Replace membranes
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 anti-scalant 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 pre-treatment. Check all filters for media
leakage
Summary of Contents for Hydroid
Page 1: ...Reverse Osmosis User Manual 888 426 5644 info hydrologicsystems com ...
Page 2: ...Hydroid Series User Manual 2 04 19 This page intentionally left blank ...
Page 24: ...Hydroid Series User Manual 24 04 19 OPERATING LOG ...
Page 29: ...Hydroid Series User Manual 29 04 19 CIRCUIT BOARD LAYOUT ...
Page 34: ...Hydroid Series User Manual 34 04 19 HYDROID FLOW DIAGRAM ...
Page 35: ...Hydroid Series User Manual 35 04 19 ELECTRICAL SCHEMATIC ...