92
Raw Water System
regularly to ensure the seawater system can cir-
culate enough water to cool the heat exchanger
and exhaust system on the generator. Refer to
Raw Water System Maintenance in this chapter for
information on cleaning the sea strainer.
You should also read the generator owner’s man-
ual for detailed information on the safe operation
and maintenance of the generator.
8.6 Raw Water System Maintenance
The following items should be done routinely to
help maintain your raw water system:
Routine Maintenance
• Check hoses, particularly the seawater supply
lines, for signs of deterioration. Tighten
ttings and clamps or replace deteriorated
hoses and components as necessary.
• Periodically remove and clean the water
strainer located near the intake side of the
washdown pump. To clean the strainer, make
sure the Seawater Pump switch is off and close
the valve at the raw water manifold. Rotate
the strainer bowl counterclockwise to release
it. Remove and clean the screen with fresh
water. Lubricate the O-ring lightly with silicon
or Teon grease and reinstall the strainer bowl.
• Spray pumps and thru-hull valves with a pro-
tective oil periodically.
• The shbox and livewell should be drained and
cleaned after each use.
• Operate all valves at least once a month to
keep them operating properly.
SHOULD A HOSE RUPTURE, TURN THE PUMP OFF IMMEDIATELY.
ALWAYS CLOSE THE THRU-HULL VALVE WHEN PERFORMING
MAINTENANCE ON A SEAWATER PUMP.
THE BATTERIES MUST BE PROPERLY CHARGED. OPERATING
ANY PUMPS FROM A BATTERY WITH A LOW CHARGE MAY LEAD
TO A PUMP FAILURE.
THE RAW WATER SYSTEM MUST BE PROPERLY WINTERIZED
PRIOR TO WINTER LAY-UP. SEE SECTION ON WINTERIZING.
Typical Raw Water Pump Strainer Removed for Cleaning
Generator Sea Strainer & Seacock
Cleaning the Generator Sea Strainer
• Turn off the generator.
• Close the generator intake water seacock.
• Turn the strainer bowl counterclockwise to
remove it and remove the screen.
• Thoroughly ush the screen and the inside of
the strainer bowl to remove foreign matter.
• Lubricate the seal lightly with silicon or Teon
grease.
• Reassemble the strainer making sure that the
bowl is tight.
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