Volvo Penta D4 Series Operator's Manual page 99

47702599 12-2011
4 The start battery must have a main switch (1) con-
nected to the battery's positive (+) side. The main
switch must break the circuit to all equipment and
be switched off when the boat is not in use.
5 If an auxiliary battery is used, a main switch must
be placed between the auxiliary battery's positive
(+) terminal and the circuit breaker panel for the
boat's electrical equipment. The main switch must
break the circuit to all equipment connected to the
auxiliary battery and must be switched off when
power is no longer required. All equipment con-
nected to the auxiliary battery must have separate
main switches.
For simultaneous charging of two independent battery
circuits a separate charging distributor (accessory)
should be installed on the standard alternator.
Electrical Welding
Remove the positive and negative cables from the bat-
teries, then disconnect all cables connected to the
alternator.
Always connect the welder ground clamp to the com-
ponent to be welded, and as close as possible to the
weld site. The clamp must never be connected to the
engine or in such a way that current can pass through
a bearing.
Also remove the connector for the EVC system from
the control unit. Press the locking arm down and pull
out the connector.
IMPORTANT!
After finished welding, re-connect the EVC connector
and the alternator terminals before connecting the bat-
tery cables.
Maintenance
97