Specifications

22 BOC Smootharc Advance MIG 200C/275C/275R/350R Operating manual
Front Panel of MIG 200C/275C
8.1 Compact Models
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 scroll button on the machine front face.
Wire feed motor speed range adjustment
The operating parameters of the wire feed motor can be altered by
switching to low or high speed range using the wire speed selection on
the front panel of the machine.
Gas Purge
The gas purge allows setting of the gas flow rate without the wire
feeding through the wire feed unit. This can also be used to purge the
system prior to the start of welding or after shutdown to ensure that no
shielding gas is trapped within the system.
Wire inch control
This control will feed the wire at a rate of 11m 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
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 flash. 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 infinite adjustment of welding voltage
even when the arc is struck.
Wire speed/amperage
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 page 24 for a complete explanation of the function of
inductance. Inductance on the BOC Smootharc ADVANCE machine can
infinitely be adjusted.
Changing the inductance will have an enhancing effect on both spatter
and weld bead appearance during dip transfer. Virtually spatter free
welds can be obtained even when using 100% C0
2
as a shielding gas.
As the control panel on the compact models is semi-synergic, adjusting
the wire speed control will also affect the voltage. In order to set
voltage independently, press Current/Voltage/Inductance button so
that the green indicator light is on V. While holding the button, turn the
Parameters adjustment to set the required voltage. The selected voltage
will be displayed in the Voltage meter window.
Adjusting the inductance modifies the arc characteristics and is
particularly useful when using short circuiting (dip) by controlling the
amount of spatter produced. This is done by pressing Current/Voltage/
Inductance button until the light indicator is fixed on
. The
percentage can now be adjusted by turning the Parameters adjustment
and will be displayed as a percentage in the Current meter window.
Current/Voltage/
Inductance button
Wire speed selection
Parameters adjustment
ON/OFF switch
2T/4T button
Gas purge button
Wire inch button
Power indicator led
Voltage meter
Current meter
8.0 Control Panels