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7741591 / 2003-12
Active corrosion protection system
Your boat may be equipped with an optional Volvo Penta ac-
tive corrosion protection system that greatly improves the life of
the drive unit by protecting it from corrosion. This system oper-
ates with very little current drain from the boat's electrical sys-
tem. It keeps the voltage potential in the area around the drive
unit in a range that is not corrosive to aluminum. (This is ac-
complished by changing the charge of water molecules so that
they do not remove electrons from the drive unit's metal parts
to cause corrosion.) If you do not have an active corrosion pro-
tection system already installed, you may purchase one from
your authorized Volvo Penta dealer.
The protection system's control box has a small LED indicator
light that blinks once every one to five seconds to show the sys-
tem is operating properly.
— If the light blinks at the rate of once every five sec-
onds, the demand for protection is very low.
— If the light is flashing once per second, the demand
for protection is high and the system is operating at
maximum capacity.
The Volvo Penta active corrosion protection system is de-
signed to adequately protect one drive unit from galvanic cor-
rosion.
NOTE! This system will not provide protection from
stray currents emitted by a malfunctioning AC
power source on your boat, the pier, or other
boats in close proximity to yours. Although
the zinc sacrificial anodes will last much
longer with this system, they must still be
cleaned and checked for material condition
periodically.
Maintenance
85
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