Seawater System - Volvo Penta D5 Operator's Manual

Maintenance

Seawater System

The seawater system is the engine's external cooling
system. The seawater system sucks in water through
the seawater inlet and pumps it through the heat
exchanger and the reverse gear oil cooler. The system
is protected from galvanic corrosion by means of zinc
anodes located in the heat exchanger and the reverse
gear oil cooler.
WARNING!
Risk of water entry. Water will flow into the boat if any
hose, plug etc. located below the waterline is removed
when the boat is in the water. Always close the sea
cocks. If the boat does not have sea cocks the water
flow must be blocked in a safe manner. If this is not
possible, the boat must be drawn up on land before
work starts.
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