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Section E-1 Section E-1
RANGER 300 D AND 300 DLX
Theory of Operation .............................................................................................................Section E
Battery, Starter, Engine, Glow Plugs, Engine Protection, Rotor, Stator, and
Idler Solenoid ..............................................................................................................................E-2
Rotor Field Feedback, Auxiliary and Wire Feeder Power...........................................................E-3
Weld Winding, Reactor, and Range Switch................................................................................E-4
Output Bridge, Choke, Polarity Switch, CV Contactor, and Output Terminals ..........................E-5
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-
RANGE
SWITCH
REACTOR
STATOR
ROTOR
MECHANICAL
ROTATION
ENGINE
GLOW PLUGS
BATTERY
6 PIN
AMPHENOL
14 PIN
AMPHENOL
OUTPUT
CONTROL
REMOTE
SWITCH
BY-PASS
BOARD
SHUTDOWN
SOLENOID
STARTER
MOTOR
ALTERNATOR
IDLER
SOLENOID
PRINTED
CIRCUIT
BOARD
FIELD
CAPACITOR
FIELD
BRIDGE
115 & 230VAC
RECEPTACLES
AC
AC
OUTPUT
RECTIFIER
BRIDGE
CAPACITORS
PART OF
RANGE
SWITCH
CHOKE
POLARITY
SWITCH
WORK
TERMINAL
ELECTRODE
TERMINAL
CONTACTOR CLOSURE
ROTOR
SLIP
RINGS
42VAC
115VAC
cv
output
contactor
CONTACTOR CLOSURE
OIL &
WATER
SENSORS
RANGER 300 DLX
FIGURE E.1
RANGER 300 BLOCK LOGIC DIAGRAM