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The following operations must be performed by qualified technicians.
Before maintenance, please contact with us for professional suggestion.
MMA WELDING
Problem
1. Meter doesn't
display, fan
doesn't work, no
welding output.
2. Meter is normal,
fan is working, no
welding output.
3. QC indicator is
ON, fan is
working, meter is
normal.
4. Too much spatter
5. Erratic welding
output current or
out of control of
potentiometer.
6. Power switch
doesn't work
TROUBLESHOOTING
1.1 Make sure power switch is OFF.
1.2 Make sure the power source connecting
to input cable is working alright.
2.1 Check if connector of output terminal is
broken or damaged.
2.2 Check if the control board is damaged
(Connect with our customer service).
3.1 IGBT is damaged.
3.2 Rectifier of quick recovery is damaged.
3.3 Control board is broken.
3.4 The feedback circuit is in fault.
4.1 Output terminal polarity connection is
wrong. So please change the polarity
5.1 The potentiometer is damaged.
5.2 Check that all kinds of connectors are in
poor contact, especially plugs.
6.1 Power switch is broken.
6.2 Rectifier bridge is broken, Replace it.
6.3 Check if there is any short circuit of
inner-machine.
18
Solution
IBL M200-105
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