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OPERATION
g. Keep wire reel spindle brake tension to
minimum required to prevent excess reel
over-travel which may cause wire "loop-offs"
from coil.
h. Use proper drive rolls and wire drive idle roll
pressure for wire size and type being used.
FAN CONTROL
The fan is designed to come on automatically when a
weld arc is established. The fan will stay on for a
minimum of 6 minutes after the weld arc is
terminated. The fan will also stay on when the
machine's welding and feeding are disabled during
thermostatic over temperature protection. (See
Welding Thermal Overload Protection)
INPUT LINE VOLTAGE PROTECTION
High Line Voltage — If the line voltage exceeds
125% of rated input voltage, the output will be
reduced to the lower level to protect voltage rating of
the capacitor bank.
Low Line Voltage — You may not be able to get
maximum output from the machine if the line voltage
is less than rated input. The unit will continue to weld,
but the output may be less than what is set.
WIRE FEED OVERLOAD
PROTECTION
The POWER MIG® 255XT has solid state overload
protection of the wire drive motor. If the motor
becomes overloaded, the protection circuitry turns off
the wire feed speed weld outputi and gas solenoid.
Check for 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, as the protection is done with
reliable solid state electronics.
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