HBS ARC 800 - Troubleshooting Guide; General Troubleshooting Precautions; Fault Diagnosis and Remedies

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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
Mains switch does not
rest in position 1
Mains switch defective Check mains switch*) Replace mains switch*) Qualied specialists
Fuse F4 1 AF for mains
switch defective
Check voltage supply of
mains switch*)
Replace fuse F4 1 AF*) Qualied specialists
Mains cable defective Check mains cable for
breaks*)
Replace mains cable*) Qualied specialists
No LED display at the
front
Fuse F5 1 AF defective Check fuse F5 1 AF*) Replace fuse F5 1 AF*) Qualied specialists
No display
No ground connection Check ground connection
on workpiece
Tighten ground connec-
tion properly
Trained personnel
Gun not connected Check gun connection Connect 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 connec-
ting line*)
Replace connecting
line*)
Qualied specialists
Welding gun trigger
button defective
Check control cable for
electrical ow with
triggered start button*)
Replace welding gun
trigger button*)
Qualied specialists
Control cable broken Check control cable for
electrical ow*)
Replace control cable*) Qualied specialists