English
English
12
Common Welding Procedures
The FLEXTEC™ 450&650 are 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, The FLEXTEC™ 450 has 4
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
(only for Flextec™ 650).
–
This is a CV
(constant voltage) weld mode used for welding the
SAW submerged arc welding process
The FLEXTEC™ 450&650 are also capable of gouging.
Gouging can be done in MMA mode for Felxtec™450
and for Flexec™650 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
procedure.
Weld Controls and Displays
Weld Process Selector Switch
For Flextec™ 650: 5 Position switch used to select the
welding process.
For flextec™ 450: 4 Position switch used to select the
welding process.
Hot Start Control Dial (only for Flextec™650)
•
The Hot Start control regulates the starting current
at arc initiation. Hot Start can be set to
“0”
and no
additional 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.
Hot Start Toggle Switch (only for Flextec™450)
•
The Hot Start control regulates the starting current
at arc initiation. Hot Start can be set to “Off” and no
additional current is added at arc start. When set to
the “On” position, additional current (relative to the
preset current) 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
potentiometer.
•
Adjustment is indicated by the meters.
•
When in REMOTE modes, this control sets the
maximum 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
displays desired preset voltage value (+/- .5V
only
for Flextec™650)
.
•
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 (
only for
Flextec™650
either 2 amps or +/- 3% (e.g. 3 amps
on 100), whichever is greater).
•
Prior to CV operation, the meter displays three
dashes 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.
Weld Terminals On/Remote Toggle Switch
•
This switch determines the trigger location.
•
When set to the “ON” position, the weld terminals
are at OCV (open circuit voltage) and ready to weld.
•
When set to the “REMOTE” position, output is
enabled through a remote trigger.
Control - Local/Remote Toggle Switch
•
Set the switch to “LOCAL” to control output at the
Flextec via the Output Control dial.
•
Set the switch to “REMOTE” to control output via a
remote device (K857 hand amptrol or K870 foot
amptrol) connected to the 6-pin remote connector or
a wire feeder connected to the 14-pin connector.
Wire Feeder Selector Switch (only for Flextec™650)
•
This switch configures wire feeder supply voltage in
the 14 pin connector to either 42 volt or 115 volt.
•
If the switch is in the incorrect position for the
attached wire feeder, there will be no power
supplied to the wire feeder.
Wire Feeder Voltmeter Polarity Switch
•
The switch provides a work connection for wire
feeder voltmeters. Place the switch in the position of
the electrode polarity indicated by the decal. The
switch does not change the welding polarity.
Thermal Light
•
This status light indicates when the power source
has been driven into thermal overload. If the output
terminals were "ON", the output will be turned back
on once the unit cools down to an acceptable
temperature level. If the unit was operating in the
"REMOTE" mode, the trigger will need to be opened
before or after the thermal has cleared and closed
after the machine has cooled down to an acceptable
temperature to establish output.