Installation manual

12 VOLT DC CONTROL CIRCUIT
DESCRIPTION
The engine has a 12 volt DC electrical control circuit that is
shown on the wiring diagrams that follow. Refer to these
diagrams when troubleshooting
or when servicing the DC
electrical system on the engine.
A CAUTION: To avoid damage to the battery charging
circuit, 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.
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INTEGRAL CONTROLLER _(I.C.)
The Integral Controller (I.e.) is an encapsulated, solid-state .
unit that supplies a DC charging voltage to the generator's
starting battery while the generator is operating.
Charging Voltage: 13.0 - 14.0 volts DC
Charging Amperage: 0 - 10- amps DC
A separate group of stator windings supplies AC voltage to a
bridge rectifier which converts the AC current to supply the
I.C. unit. The I.C. unit senses the needs
of the starting battery
and supplies a DC charge when one is needed.
If you suspect
that the I.C. unit is faulty (that is,
if the battery's charge is
low), check the charging circuit and it's components as
described in the following steps. Check all connections for
cleanliness and tightness including the ground before
replacing the I.C. unit.
NOTE: When the generator is first started, the l. C. unit will
produce a
low charging rate. This charging rate will rise as
the generator is operated.
The IC is mounted inside the generator control box. There is
a voltage output adjustment
on the controller that will allow
a DC voltage output adjustment
of ± 2 volts.
1#14 RED (+)
:#14 TAN H
1..
I
+
i #14 BLACK (-)
~DTERMINAL
OARD 6
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TEST WITH THE ENGINE RUNNING
BLACK (-)
To test the battery charger, put a multimeter between the
positive
(+) and negative (-) leads to the battery. It should
indicate 13.5V to 14V 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
again between the
(+) and (-) terminals for the 13.5V to 14Y.
If no charge is indicated, replace the charger.
BATTERY SPECIFICATION
The minimum recommended capacity of the battery used in
the engine's 12-volt DC control circuit is 170 Cold Cranking
Amps (CCA).
Battery Care
Review the manufacturer's recommendations and then
establish a systematic maintenance schedule for your
engine's starting batteries and house batteries.
D Check the electrolyte level and specific gravity with a
hydrometer.
D Use only distilled water to bring electrolytes to a proper
level.
D Make certain the battery cable connections are clean and
tight to the battery posts (and
to your engine).
D Keep your batteries clean and free of corrosion.
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BAtTERY
CHARGER (I.C.)I
A WARNING: Sulfuric acid in lead batteries can
cause severe burns on skin and damage clothing. Wear
l?UTPU
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IADJUSTMENT \ 1-- ______ --,- __________ --1
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