Operating instructions

30
BOC Smootharc Advance II MIG 250C Operating manual
Smootharc
AdvanceAdvance
II
250C
2T
4T
VOLTAGEINDUCTANCE
CRATER
ARC CURRENT
0 100 100 10
VA m/min
V
Current meter/
Wire speed meter
Control Panel of MIG 250C
9.1 Controls
The easy-to-operate and understand machine front panel includes two
LED displays for welding voltage and current/wire feed speed.
Torch latching
This is obtained by using the 2T/4T button on the machine front face.
Wire speed range adjustment
The wire speed is adjusted by turning the wire speed/Arc current knob
on the front panel.
Wire inch control
This control will feed the wire at a rate of 13m per minute through the
wire feeder without activating the gas solenoid of the power source
eliminating wastage of shielding gas.
By holding the wire inch button (located on the inside of the power
source) down it enables the operator to inch the wire through the torch
without having to depress the trigger.
This is also a safety feature because, if the operator uses the trigger on
the torch to feed the wire through, the welding current will also be on.
When the wire exits the torch it may make contact with the work piece
and cause an arc ash. This is injurious to exposed eyes and skin. It also
allows the wire to be feed through without the shielding.
Voltage adjustment
The inverter power source allows adjustment of welding voltage even
when the arc is struck.
Wire speed/Arc current
The wire feed control adjusts the speed that the wire is fed through the
MIG torch. The BOC Smootharc ADVANCE wire feed control is stepless
which means it can be adjusted whilst welding. This is an excellent
feature with these machines because the operator can set the ideal
parameters when welding. The higher the wire feed speed the higher
the amperage of the machine.
Inductance
Refer to section 9.2 for a complete explanation of the function of
inductance. Inductance on the BOC Smootharc ADVANCE machine can
beadjusted.
Changing the inductance will have an enhancing e󹟽ect on both spatter
and weld bead appearance during dip transfer.
Adjusting the inductance modies the arc characteristics and is
particularly useful when using short circuiting (dip) to control
the amount of spatter produced. This is done by turning the
Inductanceknob.
Wire speed/Arc current knob
Voltage Knob
Process selection switch
Voltage meter
Power indicator light
2T/4T button
9.0 Control Panel
Inductance Knob