Jasic ARC200PFC - Troubleshooting Guide; Common Malfunction Analysis (MMA)

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9. Troubleshooting
Warning! Before arc welding machines are dispatched from the factory, they
have already been checked thoroughly. The machine should not be tampered
with or altered. Maintenance must be carried out carefully. If any wire
becomes loose or is misplaced, it maybe potentially dangerous to user! Only
professional maintenance personnel should repair the machine!
Ensure the power is disconnected before working on the machine. Always
wait 5 minutes after power switch off before removing the panels.
9.1. Common malfunction analysis and solution
The symptoms listed here may be related to the accessories, gas,
environmental factors, and power supply you use. Please try to improve the
environment and avoid such situations.
Elimination of general problems in MMA
Symptom
Reasons
Measures taken by users
After startup, the fan does
not run, or the speed is
abnormal
The air temperature
is too low, or the fan
is damaged
When the temperature is too low, you
should leave the machine work for a
while. Wait for the temperature in the
machine to rise and fan to rotate
normally. If it does not work, replace the
fan.
MMA
Hard to start
the arc
Hot start current is
low
Or the hot start time
is short
Increase hot start current or hot start
time
Unstable arc,
start or
excessive
molten pool
during arc start
Hot start current is
high
Or the hot start time
is long
Reduce hot start current or hot start time
appropriately
Cannot start
normal arc
The power cord is
not connected
properly
Connect the power cord
Welding slag
difficult to
remove
Low arc force
current
Increase the arc force current
Hot electrode
holder
The rated current of
electrode holder is
too low
Change the electrode holder with a
higher current one
Arc is easily
interrupted
Low mains voltage
Use after the mains power is normal