Troubleshooting - ESAB ARC250i Instruction Manual

TROUBLESHOOTING

No. Breakdown
Yellow Indicator
1
is on
The adjustment
2 knob on the front
panel didn't work
Cooling Fan not
3 working or turning
very slowly
No no-load
4
voltage
Electrode Holder
and Cable getting
hot;"+" "-" polar
5
sockets becoming
hot
Power source
6
tripping
7 Others
Analysis
Bad power ventilation
lead to over-heat
protection
Circumstance
temperature is too high
Using over the rated duty-
cycle
Potentiometer defective
(current regulation)
Scarcity of phase
Switch defective
Fan defective
Wire broken or falling off
Over temperature Trip
Switch defective
Electrode Holder's
capacity is too small;
Cable is of small size
Replace it with another
one in conformity with the
requirement
Bigger resistance
between the electrode
holder and the cable
Resume power over a
long period of time ( more
than two days )
In the process of welding
Solutions
Improve the ventilation condition.
It will automatically recover when
the temperature low down.
It will automatically recover when
the temperature low down.
Replace the potentiometer.
Recover the phase
Replace the switch
Replace or repair the fan
Check the connection
See No. 1
Replace the switch
Replace it with a bigger capacity
one
Replace it with another one in
conformity with the requirement
Remove the oxide skin and tighten
Not failure. Trip caused by the main
power filter's capacity charging.
Switch on the main power source.
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