Westerbeke 6.5 SBCG-60HZ Operator's Manual page 30

BATTEltY CHARGING CIRCUIT
The.DC Circuit on the SBCG functions-to start. operate and
stop the generator's engine. The circuit is best understood by
reviewing the DC Wiring Diagram and Wiring Schematic.
The engine's DC wiring is designed with
three
simple basic
circuits: start. run and stop.
The engine has a 12 volt DC electrical control circuit that is
shown on the Wiring Diagrams. Refer to these diagrams
when troubleshooting or when servicing the DC electrical
system or the engine.
BAnERIES
A
CAUTION:
To
~void
damage
to
the battery ·
charging circut, never shut off the engine battery
switch while the engine is running. Shut off the engine
battery switch, however, to avoid electrical shorts
when working on the engine's electrical circuit.
Soecifications ,
The minimum recommended capacity of the battery used in
the engine's 12 volt DC control circuit is 800-1000 CCA. This
MUST be a dedicated battery.
BAnERY CHARGING
The generator supplies a continuous 12 amp (maximum)
charge from its battery charger to the starting battery. To test
the battery charger, put a multimeter between the positive (
+)
and negative(-) leads to the battery. It should indicate 13.0V
to 13.4V with the engine running. If only the.battery voltage
is indicated, check that the battery charger terminal
connections are tight. With the unit running, test between the
(+)and(-) terminals for 13.0V to 13.4V. If no charge is indi-
cated, replace the charger.
(+)TERMINAL TO
BRIDGE RECTIFIER /RED TO
. / CIRCUIT BREAKER
GREEN(·)
TO
BRIDGE RECTIAER
Battery Maintenance
Review the manufacturer's recommendations and then
establish a systematic maintenance schedule for your
engine's starting batteries and house batteries.
• Monitor your voltmeter for proper charging during engine
operation.
• Check the electrolyte level and specific gravity with a
hydrometer.
• Use only distilled water to bring electrolytes to a proper
level. ·
• Make certain that battery cable connections are clean and
tight to the battery posts (and to your engine).
• ·Keep your batteries clean and free of corrosion.
A
WARNING:
Sulfuric acid in lead batteries can
cause severe bums on skin and damage clothing. Wear
protective gear.
GENERATOR CONTROL PANEL
.----}
AC GENERATOR
1. ~1---------~==:J~~~~~,.::~;:~~rnffiY+
30A(rpade type) FUSE
TESTING THE
BAMRY CHARGER
BATTERYCHARGER(I.C.)
Engines & Generators
19
Located In the wiring
harness.