Sea Recovery SRC Aqua Matic 450-1 Owner's Manual page 175

Problems & Symptoms appearing and caused by the Plankton Filter:
a. The Feed Water Pressure into the Multi Media Filter is higher than normal, and the Feed Water
Pressure into the High Pressure Pump is lower than normal.
• The pressure differential readings across the Multi Media Filter indicate that the Multi Media Filter
requires back washing.
Solution: Back wash the Multi Media Filter.
11. DUAL PRE-FILTER [15 & 16]
This two stage filter removes suspended solids first through a 20 micron cartridge filter element then through a
5 micron cartridge filter element. By stepping the filtration both prefilter elements gain longer life and require
less maintenance labor and prefilter element replacement cost. As the cartridge filter elements become plugged
up with debris pressure and flow drop resulting in System shut down due to low pressure into the High Pressure
Pump [19]. The cartridge filter elements may be cleaned once to gain approximately 50% of the original life.
After the first cleaning they must be discarded and replaced with new elements.
PREFILTER ELEMENT WARNING: Do not use third party prefilter elements, use only Sea Recovery prefilter
elements. Third party prefilter elements do not properly fit and the seams fall apart. They also allow by-pass
resulting in premature fouling of the R.O. Membrane Element and extensive damage to the High Pressure
Pump. Damage to the R.O. Membrane Element or High Pressure Pump caused by the use of third party, non
Sea Recovery, Prefilter Elements is the responsibility and liability of the operator and not covered by the Sea
Recovery Warranty.
PREFILTER ELEMENT CAUTION: Do not use "string wound" or "fiber" prefilter elements. These types of
elements are designed for the Photographic Film Developing Industry. When used in sea water, they will plug
up rapidly in 1/10th or less the time. This will cause frequent shut downs of the system and very frequent
changing which will result in very high cost of maintenance and user frustration.
CAUTION: Hand tighten the bowl onto the filter top housing. DO NOT over tighten. DO NOT use any
wrench or device to tighten the bowl. It is O-ring sealed, hand tightening is adequate. Over tightening will
stress the bowl and top causing it to crack.
Problems & Symptoms appearing and caused by the Prefilter:
a. The Feed Water Pressure into the Prefilter is higher than normal, and the Feed Water Pressure into the
High Pressure Pump is lower than normal.
• The pressure differential readings across the Prefilter indicate that the elements are filled with debris
blocking the feed water.
Solution: Replace the Prefilter Elements.
12. COMMERCIAL PRE-FILTER [14]
The Commercial Prefilter housing contains a 5 micron cartridge filter element that has 38 square feet of filtering
surface area. This over size cartridge provides extended life that greatly reduces maintenance and prefilter
element replacement cost. As the cartridge filter element becomes plugged up with debris pressure and flow
drop resulting is System shut down due to low pressure into the High Pressure Pump [19]. The cartridge filter
element may be cleaned once to gain approximately 50% of the original life. After the first cleaning it must be
discarded and replaced with a new element.
section 7 page 15 of 41
Aqua Matic 450-1800 Rev. A