Mig / Gmaw (Cv) Operation; Tig / Gtaw (Cc) Operation - ESAB 350mpi Instruction Manual

SECTION 3
N. POWER ON/OFF SWITCH - Controls the main
input power into the welding machine. In the "ON"
position the machine is energized and power is
available to all of the control circuits. In the "OFF"
position the machine is de-energized and no
power is supplied to the control circuits.

3.3 MIG / GMAW (CV) OPERATION

A. Make all secondary output connections to the
power source output receptacles as described
in section 2 and as shown in the appropriate
wire feeder and/or control instruction litera-
ture.
B. After the primary input connections have been
made in accordance with section 2, close the
main wall disconnect switch or circuit breaker.
C. Place the primary power switch in the ON
position. This will apply power to the control
circuitry as indicated by the MAIN POWER
light on the front panel. If the MAIN POWER
light does not lite, check the position of the
INPUT VOLTAGE SELECT SWITCH for
proper setting.
D. Place the PANEL/REMOTE switch in the
desired position. Use the PANEL position for
control from the power source's front panel
(typical for conventional MIG wire feeders), or
the REMOTE position for remote voltage con-
trol wire feeders and/or accessories. If RE-
MOTE position is selected, set the PANEL
potentiometer to maximum for full range from
remote.
E. Place the PROCESS SELECTOR switch in
the MIG position.
F. Set the APPLICATION SELECT SWITCH to
the appropriate material/gas/application set-
ting.
G. Set a wire feed speed and begin welding.
H. If operating in the PANEL mode, adjust the
VOLTAGE potentiometer to the desired weld-
ing voltage by depressing the PRESET
SWITCH and reading the value in the VOLTS
DISPLAY. The PRESET SWITCH is only
functional with the PANEL settings.
I. Set the ARC TRIM potentiometer to the center
position. The microprocessor will provide the
optimum arc characteristics for each APPLI-
CATION setting. Additional adjustment may
be made to suit specific needs or preferences
and can be particularly effective in short cir-
cuiting arc applications.
When the HC-5 remote hand control (P/N 34838) is
plugged into the power source, the ARC TRIM potentiom-
eter on the power source is disabled even when the power
source's CONTROL switch is placed in the PANEL
position.
J. Commence welding operations by energizing
the torch switch.
K. For remaining wire feeder or control opera-
tions, refer to the appropriate instruction lit-
erature supplied with your particular system.

3.4 TIG / GTAW (CC) OPERATION

A. Make all secondary output connections to the
power source output receptacles as described
in section 2 and as shown in the appropriate
accessory instruction literature.
B. After the primary input connections have been
made in accordance with section 2, close the
main wall disconnect switch or circuit breaker.
C. Place the primary power switch in the ON
position. This will apply power to the control
circuitry as indicated by the MAIN POWER
light on the front panel.
ELECTRIC SHOCK CAN KILL! Make sure that the
contactor control switch on the remote control
accessory is in the "off" position until you are ready
to weld. Otherwise, the electrode in the torch will be
"electrically-hot" and could shock you.
D. Place the PROCESS SELECT switch in the
TIG or TOUCH TIG position.
F. Place the PANEL/REMOTE switch in the
appropriate position. Use the PANEL position
for control from the power source's front panel,
or the REMOTE position for control from a
remote control accessory.
21
OPERATION
NOTE