Volvo Penta D4 Operator's Manual page 89

7748934 04-2008
4 The start battery must have a main switch (1) con-
nected to the battery's plus (+) 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 plus (+) ter-
minal and the circuit breaker panel for the boat's
electrical equipment. The main switch must break
the circuit to all equipment connected to the auxili-
ary battery and must be switched off when power is
no longer required. All equipment connected 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
87