Yeswelder YWM-200, Руководство оператора

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TROUBLESHOOTING
MIG WELDING ISSUES
Allow welder to cool at least 10 minutes with machine ON
(observe and maintain proper duty cycle). OVERHEAT IN-
DICATOR should turn off after the machine has cooled.
Exceeded duty cycle; thermal protector
engaged.
Gun trigger is not being pulled or is not
making contact.
Pull the trigger while in contact with the workpiece. The
machine does not arc unless the trigger is pulled. Depress
the trigger ALL THE WAY until the trigger stops moving into
the gun.
Insufficient air flow causing machine to
overheat before reaching duty cycle.
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.
PROBLEM POSSIBLE CAUSE COURSE OF ACTION
No arc or wire feed.
Fan operates nor-
mally (can be heard).
No arc or wire feed.
Fan does NOT oper-
ate (cannot be
heard).
No voltage or incorrect voltage supplied
to welder.
Make sure the machine is plugged in. Check the status of
your INPUT VOLTAGE INDICATOR LED. It should be illu-
minated. Check the voltage of your outlet. If it is 10% more
or less than optimal, call a qualified electrician.
ON/OFF SWITCH is in the OFF position.
Turn the ON/OFF SWITCH to the ON position.
Circuit breaker has been tripped. Make sure the circuit breaker has been reset.
Insufficient feed drive roller pressure.
Adjust drive roller pressure.
Burr on end of wire. Re-cut wire so it is square with no burr.
Liner blocked or damaged. Clear with compressed air or replace liner.
Feed motor oper-
ates but wire will
not feed.
Despooler tension too high. Adjust despooler tension.
Wire feeding works
but no arc start
Check connection of the ground cable to the work clamp.
Tighten cable connection to work clamp if needed.
Ensure that the connection between the work clamp and
workpiece is good and is on clean, bare (not painted or
rusted) metal.
Bad ground or loose ground connection.
Pull the trigger while in contact with the workpiece. The
machine does not arc unless the trigger is pulled.
Trigger not pulled while wire is in contact
with workpiece.
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.
Insufficient gas at weld area.
Rusty, painted, oily or greasy workpiece
Ensure workpiece is clean and dry.
Check work clamp/workpiece connection and all connec-
tions to the machine. Poor ground connection or torch/electrode
connection.
Incorrect settings. Check welding parameters and polarity.
Poor quality welds.