Dc Circuit/Bahery - Westerbeke 5.0Kw BCDR Operator's Manual

DC CIRCUIT/BATTERY
BATTERY CHARGING
The DC Circuit 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.
A
CAUTION:
To
avoid 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 elect(ical circuit.
SPECIFICATIONS
The minimum recommended capacity of the battery used in
the engine's 12-volt DC control circuit is 600-900 (CCA).
BATIERY CHARGING CIRCUIT
NOTE: The 5.0KW BCDR generator is not equipped with a
belt driven DC alternator. Bauery charging is accomplished
by a bauery charge circuit that is an integral part of the AC
generator. This circuit supplies up to a 17 amp charge to
the engine
s
starting bauery. This circuit is protected by a
30 amp buss fuse.
NOTE: This charge circuit should not be used for any other
purpose than maintaining the engine dedicated starting
baUery.
Additional information on this charge circuit is found in the
BC GENERATOR section of this manual.
TESTING THE CIRCUIT
If the battery is not charging, check the fuse. To test the
circuit, remove the fuse and test with a voltmeter between
the fuse holder connection and the ground. With the engine
running, it should indicate 13-14 volts. If only the battery
voltage is indicated, check the terminal connections at the
battery.
BATTERY MAINTENANCE
Review the manufacturer's recommendations and then
establish a systematic maintenance schedule for your
engine's starting batteries and house patteries.
• 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.
ALTERNATOR INSPECTION (7.6 BTDR)
The alternator should be cleaned and inspected. the housing
can be wiped off with a solvent and the alternator terminal
studs should be cleaned with a wire brush. Make certain
those studs are tight. Also clean the wiring connections that
connect to the wiring harness.
'fum
the rotor pulley by hand.
It
should tum smoothly.
Depending on when the alternator was last serviced, the
brushes may need replacing. If the alternator is at all suspect,
send it to a service shop for testing and overhaul
Eng/nes
It
Generators
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