Lincoln Electric IM10132 FLEXTEC 650 - Manual (Page 25)

B-7 OPERATION B-7
FLEXTEC™ 650
COMMON WELDING PROCEDURES
MAKING A WELD
The serviceability of a product or structure utiliz-
ing the welding programs is and must be the sole
responsibility of the builder/user. Many variables
beyond the control of The Lincoln Electric
Company affect the results obtained in applying
these programs. These variables include, but are
not limited to, welding procedure, plate chemistry
and temperature, weldment design, fabrication
methods and service requirements. The available
range of a welding program may not be suitable
for all applications, and the build/user is and must
be solely responsible for welding program selec-
tion.
The FLEXTEC™ 650 is a multi-process inverter
welder. The Weld Process Selector Switch is used
to set the desired weld mode. The FLEXTEC™ 650
has 5 selectable welding modes:
1. SMAW – This is a CC (constant current) weld
mode used for the SMAW stick welding process.
2. GTAW – This is a CC (constant current) weld
mode used for the GTAW TIG welding process.
3. CV – 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.
4. CV-Innershield – This is a CV (constant voltage)
weld mode used for welding the FCAW-SS, flux
cored self shielded welding process.
5. CV-SAW – This is a CV (constant voltage) weld
mode used for welding the SAW submerged arc
welding process
The FLEXTEC™ 650 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 control dial, output control dial and arc control dial
are provided to setup and fine tune the welding proce-
dure.
WELD CONTROLS AND DISPLAYS
Weld Process Selector Switch
5 Position switch used to select the welding process.
Hot Start Control Dial
• The Hot Start control regulates the starting current at
arc initiation. Hot Start can be set to “0” and no addi-
tional current is added at arc start. Increasing from 0
to 10 will increase the additional current (relative to
the preset current) that is added at arc initiation.
Arc Control Dial
• 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.
Output Control Dial
• Output control is conducted via a single turn poten-
tiometer.
• Adjustment is indicated by the meters.
• When in REMOTE modes, this control sets the maxi-
mum welding current. Full depression of a foot or
hand amptrol results in the preset level of current.
Voltage Display Meter
• Prior to CV operation (current flow), the meter dis-
plays desired preset voltage value (+/- .5V).
• Prior to STICK or TIG operation, the meter displays
the Open Circuit Voltage of the Power Source or
three 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.
Amperage Display Meter
• Prior to STICK or TIG operation (current flow), the
meter displays preset current value (either 2 amps or
+/- 3% (e.g. 3 amps on 100), whichever is greater).
• Prior to CV operation, the meter displays three dash-
es indicating non-presettable AMPS.
• During welding, this meter displays actual average
amps.
• After welding, the meter holds the actual current
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.
WARNING
POWER-UP SEQUENCE
When power is applied to the FLEXTEC™ 650, the dis-
plays will illuminate and display the voltage and/or
amperage settings.