HBS Visar 650 - Maintenance, Troubleshooting, and Support; Troubleshooting Common Issues

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48
14 Troubleshooting
14 Troubleshooting
Danger from insufciently qualied 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 qualied 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*) Qualied
specialists
Welding gun cable
broken
Check welding gun cable*) Replace welding gun
cable*)
Qualied
specialists
No display
Defective connecting
line of welding gun
Check function of connecting
line*)
Replace connecting
line*)
Qualied
specialists
Welding gun trigger
button defective
Check control cable for elec-
trical ow with triggered start
button*)
Replace welding gun
trigger button*)
Qualied
specialists
Control cable broken Check control cable for elec-
trical ow*)
Replace control cable*) Qualied
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*)
Qualied
specialists
Solenoid defective Check solenoid (18 Ω to
22 Ω)*)
Replace solenoid*) Qualied
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*)
Qualied
specialists