Membrane Element Cleaning - Sea Recovery SRC Aqua Matic 450-1 Owner's Manual

Aqua Matic 450-1800 Rev. A
expand outward during operation causing irreversible mechanical damage to the R.O. Membrane
Element resulting in higher than normal Product Water Flow and High Product Water Salinity.
Solution: Replace the R.O. Membrane Element. NEVER place two Brine Seals on one R.O.
• NEVER Block the Product Water Line. NEVER place a valve in the Product Water Line that can
close and block the Product Water Line. Blockage of the Product Water line will result in high
pressure build up of 950 PSI (6550 kPa) within the line and within the product water tube and
product water channel of the R.O. Membrane Element. If the System is shut down while the
Product Water Line is blocked irreversible damage to the R.O. Membrane Element will occur.
Solution: Determine what blocked the Product Water Line and correct the condition.
• Chemical attack, one that will dissolve the membrane surface such as an oxidant like Chlorine, has
destroyed the R.O. Membrane Element surface.
Solution: Determine the source and correct the situation.
c. Product Water Flow slowly, over months, decreases and Product Water Salinity, slowly over months,
increases, quality decreases:
• As the Reverse Osmosis Membrane Element is exposed, operated or not, to Sea Water eventually
biological matter will coat the membrane surface causing a drop in production, loss of product water
flow accompanied by an increase in salt passage in the product water. Fresh Water Rinsing every 7
days will minimize and slow down the biological fouling that naturally occurs. Chemical Cleaning at
appropriate intervals will remove the biological fouling and extend the life of the R.O. Membrane
Element.
Solution: Refer to Section 6 of this Owner's Manual for R.O. Membrane Element Cleaning
• As the Reverse Osmosis Membrane Element is operated eventually dissolved solids, salts or minerals,
will build up on the membrane surface causing a drop in production, loss of product water flow
accompanied by an increased percentage of dissolved solids, salt, in the product water. Chemical
Cleaning at appropriate intervals will dissolve the salt and mineral fouling and extend the life of the
R.O. Membrane Element.
Solution: Refer to Section 6 of this Owner's Manual for R.O. Membrane Element Cleaning
d. Product Water Flow suddenly decreases and Product Water Salinity, suddenly increases, quality
decreases:
• Chemical, one that will foul or plug up the membrane surface, or Oil attack to the R.O. Membrane
Element will cause the production to suddenly decrease and the product water quality will suddenly
worsen.
Solution: Replace the R.O. Membrane Element(s) if they have been attacked by Chemicals or Oil.
e. Feed Water leaks from the Pressure Vessel:
Membrane Element.
Replace the R.O. Membrane Element.
Replace the R.O. Membrane Element.
procedures or replace the R.O. Membrane Element(s).
procedures or replace the R.O. Membrane Element(s).
section 7 page 22 of 41