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4. Lower your welding helmet and pull the trigger on the torch to start an arc,
then begin to drag the torch toward you while simultaneously turning the
Wire Speed dial counterclockwise.
5. Listen for a high–pitch buzzing sound. This indicates the setting is correct.
When decreasing the speed, the arc's sound will change from a sputtering
noise to a high-pitched buzzing sound. It will begin sputtering again if you
decrease the wire speed too much.
You can use the wire speed control to increase or decrease the heat and
penetration for a given heat setting by selecting higher or lower wire speed
settings. Repeat this tune-in procedure if you select a new heat setting, a
different diameter wire or a different type of welding wire.
DUTY CYCLE
The welding unit's duty cycle rating defines how long the operator can weld
before allowing the welding unit to cool. The duty cycle is a percentage of a 10
minute period. The welding unit must cool for the remainder of the cycle. This
welding unit has a duty cycle rating of 35% at the rated output (see
Specifications). This means that the user can weld for 3.5 minutes and then rest
the welding unit for 6.5 minutes before using it again.
The welding unit may stop before the 3.5 minute duty cycle time limit. Reduce
the wire speed slightly and tune in the welding unit at the lowest wire speed
setting that still produces a smooth arc. Welding with the wire speed set too
high causes excessive current draw and shortens the duty cycle.
INTERNAL THERMAL PROTECTION
Constantly exceeding the duty cycle can damage the welding unit. An internal
thermal protector will open when the duty cycle is exceeded, shutting OFF all
welding unit functions except the cooling fan. Leave the welding unit turned ON
with the fan running. The thermal protector will automatically reset and the
welding unit will function normally again once it has cooled.
Wait at least another 10 minutes after the thermal protector opens before resuming
welding. Starting before this additional time may result in a shortened duty cycle.
28
130A Inverter MIG Welder
For technical questions call 1-800-665-8685
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