BREAKDOWN
1
2
3
4
5
6
7
8
Case electrification.
Big noise when it’s switched
on; power source fuse mel-
ted away.
Too small amount of output
current; No striking or the
arc becomes unsteady.
The winding getting hot,
smoking and the fuse mel-
ted away.
No striking or difficult to ig-
nite arc after the welder is
switched on.
Cooling fan not working
properly.
Big noise when welding.
Others
1. Primary winding run into case.
2. Secondary winding run into
case.
3. Primary and secondary winding
meet the iron core.
4. Input wire happens to touch
the case.
1. Short-circuit in the primary and
the secondary spool.
2. The wire adaptor meet each
other.
3. Fuse too small.
1. Input voltage too low and the
voltage undelates.
2. Welding cable too thin and too
long; The connection between the
earth wire and the work piece not
well secured, with the result of
too much of resistence.
3. The connection between the
welding cable and the transfor-
mer output and not well secured,
with the result of too much of
resistance.
4. Regulation screw and nut worn
out.
1. Overload running.
2. Partial short-circuit on the pri-
mary and secondary winding.
3. Cooling fan broken.
1. No input voltage from the
power source.
2. Switch is in off position.
3. Input wire sectional dimension
is too small or welding cable too
long.
4. Partial winding short circuit.
1. Starting capacitance disable or
broken.
2. Coil in fan’s motor burned out.
3. Contact failure or disconnec-
tion.
1. Uneven gap between the mo-
ving iron core and the static iron
core.
1. Regarding 1.2.3, disconnect the power source. Use the
multimeter’s low resistance to measure. When one stick touches
the case or the iron core while another one measures the primary
and secondary winding, that indicates an electric leakage if the
second swings. Keep the case free from being touched, and have
insulation treatment between the winding and the iron core with
the same insulation materials.
2. Rid the wire or the welding cable of any position which is being
touched .
1. Find out the short circuit on the winding get it repaired.
2. Keep the wires apart.
3. Replace the fuse.
1. Adjust the input current up to the rated value, or increase the
main supply capacitance.
2. Enlarge the welding cable’s sectional dimension to secure a
sound connection between the earth wire and the work piece.
3. Secure a sound connection between the welding cable and the
transformer output end.
4. Replace the worn-out parts.
1. Stop operation. Resume operation in conformity with the duty
cycle requirement after the winding has cooled off.
2. Repair the short-circuit part or replace the winding.
3. Repair or replace cooling fan.
1. Check input power switch, fuse, input wire to enable them to
work normally.
2. Turn on the switch to make the welder’s switch in on position.
3. Use a bigger wire or a welding cable.
4. Repair the short circuit area on winding.
1. Replace the capacitor.
2. Replace winding or motor.
3. Check the wire to work out the failure.
1. Readjust the gap between the moving iron core and the static
iron core.
Please contact with our company.
ANALYSIS
SOLUTIONS
14
TROUBLESHOOTING
SOL83020 manual.indd 14
28/10/14 09:32
