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(See Figure B.2)
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The Flextec™ 450 is a multi-process inverter welder.
The ,5<4%B?35CC(5<53D?B(G9D38 is used to set
the desired weld mode. The Flextec™ 450 has 4
selectable welding modes:
(", U This is a CC (constant current) weld
mode used for the SMAW stick welding process.
),U This is a CC (constant current) weld
mode used for the GTAW TIG welding process.
+U This is CV (constant voltage) weld mode used
for welding the GMAW MIG welding process and
the FCAW-GS, flux cored gas shielded welding
process.
+>>5BC895<4U This is a CV (constant voltage)
weld mode used for welding the FCAW-SS, flux
cored self shielded welding process
The Flextec™ 450 is also capable of gouging.
Gouging can be done in either the SMAW mode or the
CV and CV-Innershield modes.
In addition to the weld process selector switch, a hot
start toggle, output control dial and arc control dial are
provided to setup and fine tune the welding procedure.
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4 Position switch used to select the welding process.
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The Hot Start control regulates the starting current at
arc initiation. Hot Start can be set to V$66W and no
additional current is added at arc start. When set to
the V$>W position, additional current (relative to the
preset current) is added at arc initiation.
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Full range selection of arc control from -10 to +10. In
CV mode, this control is an inductance control. In
stick mode, the control adjusts the arc force.
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Output control is conducted by a single turn poten-
tiometer. (Adjustment is indicated by the meters.)
When in Remote Mode, this control sets the maximum
welding current of the remote device. For example, full
depression of a foot or hand amptrol results in the pre-
set level of current.
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• Prior to CV operation (current flow), the meter dis-
plays desired preset voltage value.
• Prior to STICK or TIG operation, the meter displays
the Open Circuit Voltage of the Power Source or four
dashes if the output has not been turned on.
• During welding, this meter displays actual average
volts.
• After welding, the meter holds the actual voltage
value for 5 seconds. The displays blink indicating that
the machine is in the "hold" period.
• Output adjustment while in the "hold" period results in
the "prior to operation" characteristics.
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When power is applied to the Flextec™ 450, the
displays will illuminate and display the voltage and/or
amperage settings.