Sea Recovery SRC Aqua Matic 450-1 Owner's Manual page 213

Instructions for Backwashing of
the Multi Media Filter:
a. Open the Inlet Sea Cock
Valve [2].
b. Position the Rinse Clean
Inlet Valve [54], if
installed, to the normal
operating position
towards the Sea
Strainer [5].
c. Position the Rinse Clean
Outlet Valve [55], if
installed, to the normal
operating position
towards the Brine
Discharge Thru-Hull
Fitting [35 or 36].
d. Position the Multi
Media Filter valves to
Backwash
e. In the Manual mode of
operation, operate only
the Booster Pump.
f. After 10 minutes of back
washing Stop the
Booster Pump.
g. Position the Multi
Media Filter Valves to
Rinse.
h. In the Manual mode of
operation, operate only
the Booster Pump.
i. After 5 minutes of
Rinsing Stop the
Booster Pump.
j. Position the Multi Media
Filter Valves to
Normal Operation.
13. Inline Vacuum / Pressure Gauges [13]: If the Vacuum/Pressure gauge needle does not move; or does not register
proper vacuum or pressure this may be caused by a plugged orifice. The Vacuum/Pressure Gauges have a very
small orifice at the bottom of the pipe fitting end. This orifice can become plugged with debris or corrosion.
Using a small diameter wire clean the debris from the orifice. Replace the gauge if cleaning of the orifice does
not restore functionality.
14. Commercial Prefilter [14] Element Replacement: The Commercial Prefilter Pleated Cartridge Element may be
cleaned with water spray once or twice. After cleaning the expected life will be reduced in half. Attempts to
clean the element more than twice will result in a very short life and will damage the element rendering it
useless. Change the element after the first or second cleaning. Clean or replace the element when plugged to the
extent that the pressure into the High Pressure Pump is 10 PSI (69 kPa) or less. At slightly below 6 PSI the
System will turn off and display a fault screen indicating low pressure.
CAUTION: Do not use third party prefilter elements; use only Sea Recovery Prefilter Elements. Third party
prefilter elements on the market do not properly fit, the seams fall apart, they will allow by-pass.
VALVE POSITIONING OF THE MULTI MEDIA FILTER
DURING 4 SEPARATE MODES OF OPERATION
PSI Differential with
Clean Media:
5 psi @ 4.2 gpm
4 psi @ 3.5 gpm
3 psi @ 2.5 gpm
Waste Discharge
of Multi Media Filter
To
Multi Media Filter Waste
Overboard Dump Fitting
Valves Positioned
for
Normal Operation
Valves Positioned
for
Media Filter Rinse
section 8 page 11 of 30
Aqua Matic 450-1800 Rev. A
Filling Plug
Inlet of Multi Media Filter
From
Booster Pump Outlet
or
Fresh Water Flush Outlet
Outlet of Multi Media Filter
To
Prefilter Inlet
Valves Positioned
for
Media Filter Back Wash
Valves Positioned
for Emergency
Media Filter Bypass