ACP
Volvo Penta ACP (Active Corrosion Protection) pro-
tects against
galvanic corrosion by controlling an elec-
tric current that can be monitored by the engine elec-
trical system.
It is preferable to connect the boat to shore supply, if
such is available. If shore power is unavailable, ACP
utilizes the batteries. If the batteries begin to discharge,
the ACP switches from primary to secondary protec-
tion. The IPS is then protected by the consumption of
a sacrificial zinc anode installed in the ACP unit on the
transom.
When the primary protection is in use, a small quantity
of chlorine gas is produced by the ACP; if desired it can
be switched off temporarily. The ACP then switches
over to secondary protection.
The ACP reverts automatically to normal mode after 4
hours; earlier reversion can be arranged in the settings
menu (see below) or when ignition is switched on.
Protection levels
The ACP has three protection levels; the active level
is displayed in the EVC menu.
A Good Protection the IPS unit is optimally protected
by the ACP function.
B Limited Protection Limited Protection; secondary
protection - the IPS has complete corrosion protec-
tion via the sacrificial anode.
Check that the batteries are being charged by shore
power; alternatively, start the engine so that the
alternator charges the batteries.
There is no risk of corrosion as the sacrificial anode
protects the IPS. However, seek service for system
checks at the first suitable opportunity if the system
remains in the limited protection mode for more than
approx. 2 hours.
If the system remains in this mode for a longer break
in operations, more than 8 weeks, service should be
sought for system checks.
C No Protection risk of corrosion, system gives warn-
ing alarm.
Seek service for system checks.
D If the ACP is set to inactive, the system cannot iden-
tify ACP status and three lines will be shown on the
display.
If this should occur when the system is not set to
inactive, seek service for checks.
ACP will also show the three lines during one minute
after ignition is turned on, thereafter it will show cur-
rent protection level.
Optional
46 47702095 04-2011
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