44
14 Troubleshooting
©Walter Stauffenberg GmbH & Co. KG
All rights reserved – Reprinting, in whole or in part, only with the approval of the manufacturer
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
No
display
No ground connection
Check ground connection
on workpiece
Tighten ground con-
nection
properly
Trained personnel
Welding gun not con-
nected
Check welding gun
connection
Connect welding gun
properly
Trained personnel
Transition resistance
(between stud and
workpiece) too high
Check material surface
Clean or grind material
surface
Trained personnel
Ground cable broken
Check ground cable*)
Replace ground cable*)
Qualified
specialists
Welding gun cable
broken
Check welding gun cable*)
Replace welding gun
cable*)
Qualified
specialists
No
display
Defective connecting
line of welding gun
Check function of connecting
line*)
Replace connecting
line*)
Qualified
specialists
Welding gun trigger
button defective
Check control cable for elec-
trical flow with triggered start
button*)
Replace welding gun
trigger button*)
Qualified
specialists
Control cable broken
Check control cable for elec-
trical flow*)
Replace control cable*)
Qualified
specialists
Continuously Yellow
Welding sequence too
fast
Stud welding unit resets
automatically
Let switched on stud
welding unit cool down
Trained personnel
Gun does not lift, in
spite of
and
No lift adjusted
Check settings of welding
gun
Modify set parameters
Trained personnel
Short circuit of solenoid
circuit of the stud wel-
ding gun
Check resistance value at
control cable connector (18 Ω
to 22 Ω) between Pin 1 and
Pin 2*)
Replace control cable
connector, control cable
and solenoid*)
Qualified
specialists
Solenoid defective
Check solenoid (18 Ω to
22 Ω)*)
Replace solenoid*)
Qualified
specialists
Lifting impossible
Solenoid circuit inter-
rupted
Check resistance value at
control cable connector (18 Ω
to 22 Ω) between Pin 1 and
Pin 2*)
Replace solenoid or
control cable*)
Qualified
specialists