Battery Charging Circuit - Westerbeke 5.0KW BCG-60Hz Operator's Manual

THE BATTERY CHARGING CIRCUIT
The DC Circuit on the BCGB 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 serviQing the DC electdcaI
system or the engine.
BATTERIES
A
CAUTION:
To avoid damage to the battery charg-
Ing clrcut, never shut off the engine battery switch
while the engine is running. Shut off the engine battery
switch, however, to avoid electrical shorts when work-
ing on the englne~ electrical circuit.
Specifications
The recommended capacity of the "dedicated" starting battery
used for the engine's 12VDC circuit is 600-800 C.C.A.
BATTERY CHARGER
The generator supplies a continuous 17 amp charge from
its battery charger to the starting battery. To test the battery
charger, put a multimeter between the positive
(+)
and
negative
H
leads to the battery. It should indicate l3.0V to
i3AV with the engine running.
If
only the battery voltage
is indicated, check that the battery charger terminal
connections are tight With the unit runiling, test between
the
(+)
and (-) terminals for 13.0V to
13AV.
If no charge
is indicated, replace the charger.
RED TO
CIRCUIT BREAKER
GREEN
H
BRIDGE RECTIFIER
TO GROUND
Battery Maintenance
Review the manufacturer's recommendations and then estab-
lish 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 burns on skin and damage clothing. Wear
protective gear.
GENERATOR CONTROL PANEL
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IDC I
DEVOLTAGE OUTPUT";:\;'
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ADJUSTMENT POT
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INCREAS.~
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C.C.W TO DECREASE
L~,i~'S
TESTING THE
BATTERY CHARGER
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30A ' AC iCHARGE
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INTEGRAL
CONTROLLER :
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Engines & Generators
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