TM 9-3431-254-14&P
CONTROLS, INSTRUMENTS AND OUTLETS (Con-
has commenced to fire and has attained the running
mode, piece switch in RUN position. For engine shut-
tinued)
down, place switch in OFF position.
WELDING VOLTMETER (5) - This is a single-scale
WIRE FEEDER CONTROL RECEPTACLE (13) -
meter, calibrated 0 to 100 volts. Prior to striking the
When unit is used with a wire electrode feeder, the con-
welding arc, the voltmeter will register open-circuit
voltage, and arc voltage when the welding arc is being
trol and power connections to the wire feeder are made
sustained.
to this raceptacle.
CAUTION: Before a wire feeder is
WELDING AMMETER (6) - This is a single-scale
meter, calibrated 0 to 800 amperes, and will indicate
connected to this unit, be sure that
electrical wiring and functions of such
welding current.
a unit am compatible, otherwise dam-
FINE CURRENT CONTROL (7) - This control
the wire feeder may occur.
operates in both constant current and constant voltage
to permit vernier adjustment of welding current. Clock-
wise rotation increases welding current and counter-
SLAVE RECEPTACLE (14) - Source of 24-volt
clockwise rotation decreases current.
power for user's requirements. Use in conjunction with
the Toggle Switch, below.
CHOKE CONTROL (8) - Pull choke control knob
TOGGLE SWITCH (15) - This switch selects the
"out" when starting a cold engine, and push it "in"
gradually as the engine warms up. Push it all the way in,
power output mode, when the selection of 24-volt out-
as soon as the engine will run smoothly without being
put power from the Slave Receptacle or welding current
from the terminals is to be made. Place the switch in
choked. It may require choking even if engine is warm.
SLAVE RECEPTACLE position for supply of 24-volt
ENGINE THROTTLE (9) - Pull OUT to idle the
power. Place the switch in CV WELDING position when
desiring to use the machine for welding.
engine, Shove IN to obtain operating RPM. Control
handle may be turned to lock in position at any setting
desired. When shutting the engine down, always pull the
CIRCUIT BREAKERS (18-19-20) - Four circuit
throttle control handle all the way OUT.
breakers located on the front panel protect the auxiliary/
AUXILIARY POWER OUTLETS
15 amperes and protect the standard duplex outlet.
Another breaker is rated at 20 amperes and protects
a. TWIST-LOCK Receptacle (10) - Provides 115-volt,
the Twistlock outlet while the fourth breaker (Main
4-kVA AC power. Circuit is protected by a circuit
Breaker) is rated at 40 amperes and protects the entire
breaker (CB4) of 20-ampere value. A receptacle cover
auxiliary power supply circuitry from cumulative
protects the receptacle when not in use.
overloading.
b. STANDARD DUPLEX Receptacle (16) - Provides
115-volt, 4-kVA AC power. Circuits to the separate out-
BATTERY CHARGING AMMETER (21) - This
lets of the receptacle are protected by circuit breakers
meter indicates the charge or discharge current through
the battery for all engine eIectrical requirements except
have covers provided for protection when the receptacles
the starter. Under normal operating conditions, the
are not in use.
ammeter should indicate 5-10 amperes positive. If the
battery has been damaged, or heavily discharged, the
NOTE: Full auxiliary power output
meter will indicate a much greater current.
is turning at 1800 RPM. The engine
NOTE: The following welding termi-
nals are located on a panel on the
driving this generator should be
left-hand side of the generator.
governed to within 3% of the speci-
fied generator speed (1800 RPM).
NEGATIVE WELDING TERMINAL - A common
START/RUN/OFF Switch (12) - Place in START
connection which connects to the WORK (material
position to crank the engine for starting. When engine
being welded) by the WORK lead, See Figure 2.
3