HBS 92-10-0502, Руководство по эксплуатации, Страница: 43 / 54

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14 Troubleshooting
14 Troubleshooting
Danger from insufficiently qualified operating personnel
‹
Carry out only the work described here on your stud welding unit or stud
welding gun.
‹
Repairs may only be carried out by appropriately qualified personnel.
‹
Inform your dealer or your maintenance department.
Fault Possible cause Fault localisation Fault remedy Performance
The mains control lights
in the mains switch do
not illuminate
Mains connection sock-
et defective
Check mains connection
socket*)
Replace mains connec-
tion socket*)
Qualified specialists
Interruption in mains
cable
Check mains cable*) Replace mains cable*) Qualified specialists
No LED indicator on the
front side
Line interruption Check lines*) Replace lines*) Qualified
specialists
No display
No ground connection Check ground connection
at the workpiece
Properly secure the
ground connection
Trained personnel
Stud welding gun not
connected
Check gun connection Connect the stud weld-
ing gun correctly
Trained personnel
Contact resistance
(between studs and
workpiece) too high
Check workpiece surface Clean or sand down
workpiece surface
Trained personnel
Cable breakage -
ground
Check ground cable*) Replace ground cable*) Qualified specialists
Cable breakage at stud
welding gun
Check welding gun
cable*)
Replace welding gun
cable*)
Qualified specialists
No display
Fault in connecting line
of the stud welding gun
Check function of the
connecting line*)
Replace connecting
line*)
Qualified specialists
Welding-gun start but-
ton defective
Check control cable for
continuity with the push-
button pressed*)
Replace welding-gun
start button*)
Qualified specialists
Cable breakage in the
control line
Check control cable for
continuity*)
Replace control cable*) Qualified specialists
LED illuminates
yellow
Stud welding unit over-
heated
--- Allow stud welding
unit to cool down while
switched on
Trained personnel
LED fast flashing
Thyristor is defective --- Switch the welding unit
off and on again
Trained personnel