Manual no. WM070401
Page
21
CoolArc200
Low line mains power voltage
Use input voltage
according to
specification
Rectifier short circuit
Check and replace
Main transformer short circuit
Check and replace
Control transformer short circuit
Check and replace
Cooling fan short circuit
Check and replace
5
The digital meter do not
display properly
The LED is broken
Change the LED
6
The preset current range does
not meet the machine
specification
Initial setting at PCB is not
accurate
Adjust potentiometer
Imin on the control
PCB for min current
and Imax for max
current
7
No OCV
Problem main circuit
Check control PCB,
Power PCB and
IGBT module
No arc
Welding cable and earth cable is
loose or broken
Check and repair
Difficult to strike the arc or
electrode stick to the
workpiece
Loose connection
Check connection
and repair
Surface of the workpiece is
contaminated by oil or rust
Clean the workpiece
surface.
Selected wrong welding process.
Use the correct
process at panel
Welding current cannot be
adjusted
Welding current adjustment
potentiometer is loose or damage
Check and repair
Содержание COOLARC 200
Страница 1: ...COOLARC 200 Owner s Manual STICK SMAW TIG GTAW ...
Страница 3: ......
Страница 15: ...Page 10 Manual no WM070401 CoolArc200 208 230v input Figure 4 2 Power Cord Earth clamp Electrode holder ...
Страница 34: ...Manual no WM070401 Page 29 CoolArc200 Figure 8 1 ...
Страница 35: ...Page 30 Manual no WM070401 NOTES WELDKING CoolArc200 power source ...
Страница 36: ...Manual no WM070401 Page 31 CoolArc200 SECTION 9 ELECTRIC DIAGRAM Figure 9 1 ...