Generac Power Systems MC User Manual

Page 48

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2.4.1.4-FIELD BOOST MODULE (FB)

Many alternators rely on residual

or ’’stored" magnetic energy to
provide the initial magnetic field
around the rotor windings. Residu

al magnetism can be lost due to

shock or physical damage.

The MC alternator is equipped with

a Field Boost Module (FB) which
supplies battery current to the
rotor windings during each start.

2.4.2- CIRCUIT OPERATION

Battery power is available through Wire No. 13, the 15 Amp Fuse, and
Wire No. 15 to the Control Relay (CR) contacts. When the push button

(FUEL PUMP) is depressed, the CR contacts close. This completes the
12 Volt DC circuit through Wire No. 14, the Fuel Lockoff Solenoid (FS),

Fuel Pump (FP), and the Choke Heater to frame ground. The Fuel Lockoff

Solenoid is energized open and the Fuel Pump operates.

2.4-2