© Lampert Werktechnik GmbH
2013
18
10. TROUBLESHOOTING
10.1 WELDING DEVICE
FAULT
CAUSE
REMEDY
1
No welding current
Mains master switch on,
display remains off
Mains cable interrupted
Check mains cable and mains voltage
Device fuse blown
Replace device fuse with identical
fuse (same type and value)
2
No welding current
Mains master switch on
Welding cable connections interrupted Check plugged connections
Poor or zero contact to the workpiece
Establish connection to the workpiece,
fasten contact clamps directly to the
workpiece
3
No welding current
Mains master switch on
Fault due to leakage current
Switch device off and back on again
If fault reoccurs,
arrange for servicing of device
4
Mains fuse blows or automatic
circuit breaker trips
Mains insufficiently fused or incorrect
automatic circuit breaker
Fuse mains properly
Mains protection trips during idling
arrange for servicing of device
5
Poor welding characteristics
Incorrect shielding gas
Use inert shielding gas (Argon 4.6)
6
Poor ignition characteristics
Electrode clamped loosely in hand
piece
Tighten the clamping nut in the
handpiece (chap.11, no.41) by hand,
however, tighten
firmly
.
7
Oxidation and rusting
Excessive gas pressure
Reduce flow rate - approx. 2 l/min is
recommended
8
Severe oxidation of the welding
points
Incorrect shielding gas
Use inert shielding gas (Argon 4.6)
9
Tungsten inclusions in base
material
Excessive pressure of the electrodes
on the workpiece
Touch workpiece with extremely light
pressure.
10
Tungsten electrode welds to
workpiece
Excessive pressure of the electrodes
on the workpiece
Touch workpiece with extremely light
pressure.
11
Tungsten electrode melts off
immediately
Electrode sharpened too steeply
Use the recommended angle of
grinding (approx. 15°)
12
Static discharge over the surface of
the device
Special local conditions
Use special foot mat for the
workspace
13
Device begins to weld immediately
when touching the workpiece (no
gas pre-flow)
Fault
Immediately shut down the device,
arrange for servicing.
