Forney Easy Weld 140 MP Manual De Instrucciones página 25

PROBLEM
Frequent circuit breaker trips.
Wire pushes gun back from the
workpiece.
Poor quality welds.
Weld deposit "stringy" and
incomplete.
Weld deposit too thick.
Difficult arc start (TIG/STICK).
Arc is wandering (TIG).
Neither INDICATOR LED is
illuminated and nothing works
on the welder.
Both INDICATOR LEDS are
illuminated and there is no
output power from the welder.
POSSIBLE CAUSE
Machine is drawing too much amperage
due to use of larger size wire.
Machine is not the only piece of electrical
equipment on the circuit.
Circuit breaker is incorrect/insufficient for
use with this machine.
Gun held too far from the workpiece.
Insufficient gas at weld area.
Rusty, painted, oily or greasy workpiece.
Rusty or dirty wire.
Poor ground or gun contact.
Incorrect gas/wire combination.
Gun moved over workpiece too quickly.
Gas mixture incorrect.
Gun moved over workpiece too slowly.
Welding voltage/amperage too low.
Amperage is too low.
Tungsten is too large.
Machine is not turned ON.
No input power present.
Exceeded duty cycle; thermal protector
engaged.
Insufficient air flow causing machine to
overheat before reaching duty cycle.
Incorrect voltage supplied to welder.
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POSSIBLE SOLUTION
Use the smallest wire possible for this
welder. 0.030-inch wire is strongly
recommended.
Make sure the welder is on a dedicated
circuit or is the only thing plugged on a
circuit.
Verify that the circuit breaker for the circuit
is a 20A time-delay (slow-blow) breaker. If
it is not, have a qualified electrician install
the proper breakers.
Hold the gun at the right distance.
Check that the gas is not being blown
away by drafts and, if so, move to a more
sheltered weld area. If not, check gas
cylinder contents, gauge, regulator setting,
and operation of gas valve.
Ensure workpiece is clean and dry.
Ensure wire is clean and dry.
Check ground clamp/workpiece
connection and all connections to the
machine including the MIG ELECTRODE
POLARITY JUMPER (9) connection.
Check "Gas Selection", page 19, and
Set-Up Charts on welder cabinet cover or
pages 19-21 for the correct combination.
Move the gun slower.
See "Gas Selection", page 19.
Move the gun faster.
Increase welding voltage/amperage.
Increase amperage setting.
Use a smaller tungsten.
Turn machine ON with ON/OFF SWITCH.
Make sure machine is plugged in.
Verify that circuit breaker has not been
tripped. Reset if needed.
Verify output power from the outlet.
Allow welder to cool at least 10 minutes
with machine ON (observe and maintain
proper duty cycle). FAULT/THERMAL
OVERLOAD INDICATOR LED (3) should
turn off after the machine has cooled.
Check for obstructions blocking air flow
and ensure that there are 12 inches of
clearance between any obstacles and the
vents on all sides of the machine.
Check the voltage of your outlet. If it
is 10% more or less than 120V, call a
qualified electrician.
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