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SERVICE BULLETIN
DATE:
4/4/83
MODEL:
All mar ine engines
SUBJECT:
Alternator Output Splitter
BULLETIN NUMBER: 87
GENERAL DESCRIPTION:
The spli tter
is a solid state device which
allows two batteries to be recharged and brought to the same ultimate
voltage from a single alternator as large as 120 amp and, at the same
time,
isolates each battery so that discharg ing one will have no
effect
on
the
other.
Charging
rates
are
in
proportion
to
the
batteries' voltage (state of discharge).
This method precludes the
necessity, and even the desirability, of a rotary switch for selecting
which battery is to be charged.
It also assures that ships' services
cannot drain the engine starting battery.
INSTALLATION:
1.
Mount splitter on metal surface other than the engine, preferably
in an air stream if available.
Do not install near engine exhaust
system.
Install with cooling fins aligned vertically.
2.
Be sure to use a wire size appropriate to the output of the asso-
ciated alternator.
In full power systems number 4 wire is recom-
mended from the alternator to the spli tter and from the splitter
to the batteries.
'3.
Connect the alternator output terminal to the center splitter ter-
minal.
4.
Connect one splitter side terminal to one battery(s).
5.
Connect the other splitter side terminal to the other battery(s).
6.
When the splitter is installed, both batteries will see a charging
voltage 8/10 volts less than usual.
This voltage drop can be
regained, if desired, by connecting the regulator wire directly to
the alternator output terminal instead of the regulator terminal.
TEST INFORMATION:
When the engine is not running, the side splitter
terminals should read the voltage of the respective battery.
The
center splitter should read zero voltage.
With the engine running and alternator charging, the side splitter
terminals should read the same voltage which should be the voltage of
the regulator or somewhat less.
The center splitter terminal should
read .82 volts higher than the readings of the side terminal.
This unit is sealed for maximum life and is not repairable.
Continued ••••••••••••••••••••••
104
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