18
OPERATION
The duty cycle is the “on” time (based on a 10 minute interval) the user
can
weld with the machine at a specific output without causing a thermal
trip.
Example: 30% duty cycle means welding at the specified output for
3 constant minutes and needing 7 minutes of “off” time before
welding again.
I
NPUT LINE VOLTAGE VARIATIONS
High Line Voltage/ Low Line Voltage — The Power MIG® 21
1i
will
operate between 100 and 250 VAC 60Hz.
WIRE FEED OVERLOAD PROTECTION
The Power MIG® 21
1i
features overload protection of the wire
drive
motor. If the motor becomes overloaded, the protection
circuitry
turns off the wire feed unit. Check for the proper size tip,
liner, and
drive rolls, for any obstructions or bends in the gun cable,
and any
other factors that would impede the wire feeding. To
resume
welding, simply pull the trigger. There is no circuit breaker
to reset.
If the duty cycle of the machine is exceeded, then the machine will
thermally trip and the
Thermal LED
will be
illuminated
on the user
interface. The machine must cool down before welding can be
performed.
POWER MIG 211i
®