8
1
NOTE: Generator is shown with access door
removed.
A - Over Temperature Switch - Switch for auto-
matically making or breaking an electrical circuit
at predetermined temperature. Will signal the
system control panel to shut down the generator
when the engine coolant reaches a critical level.
B - RPM Sensor - A permanent magnet built into
the sensor provides a magnetic field at the base
of the sensor. As each tooth of the flywheel
passes through the magnetic field, a signal (volt-
age pulse) is generated. The engine control unit
uses this to monitor engine speed to maintain a
specific generator frequency.
C - Air Cleaner - Protects engine by filtering dust
and debris out of intake air.
D - Alternator Data Plate - Lists alternator data
specific to the Marathon alternator assembly.
E - Battery - Stores and supplies electrical
energy. The manufacturer does not supply the
battery.
F- Engine Warmer - An electric heater that
heats the engine by keeping the engine coolant
warm to ease starting in cold weather. Con-
nected to utility power and fully automatic.
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