HBS A 12 - Page 30

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30
12 Troubleshooting
Fault Possible cause Fault localisation Fault remedy Performance
Stud welding gun does
not weld
Ground connection
defective (no contact
signal on stud welding
unit)
Check, whether ground
cable is connected to
workpiece in a technically
correct way
Connect ground cable Trained personnel
Check ground cable for
electrical ow *)
In case of no ow:
Replace ground
cable *)
Qualied specialists
Stud welding unit
defective
Follow the instructions
of the connected stud
welding unit
Repair required Factory service or
authorised agencies
Stud welding gun does
not lift, in spite of ,
and
Short circuit of mag-
netic circuit of the stud
welding gun
Meassure 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 Meassure solenoid (18 Ω
to 22 Ω) *)
Replace solenoid *) Qualied specialists
No display
Magnetic circuit inter-
rupted
Meassure 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
Work marked with *) may only be carried out by qualied electricians!
 Please contact our Service department if none of the measures described
remedies the situation.
 Please use the form „Service & Support“ in the annex to send in the stud
welding gun.