ABB GWT C9, Product Manual

Page: 74 / 128

Further information Action Possible cause Trouble
Inspect the cooling
circuit. Abnormal electrode
caps wear Large splatter during
welding
Dress/change the
electrode caps.
Clean the workpieces. Workpieces are dirty
See Welding current
is too low . above
Welding current is too
low
See Application
manual - Spot options
3HAC050979-001
.
Check the pro-
grammed force.
Perform a force calib-
ration. Welding force too low
Clean/dress the elec-
trode caps. Electrode caps are
dirty
Inspect the cooling
circuit. Insufficient cooling of
the tips Stuck electrode tips
Dress/change the tips.
Verify that the actual
permanent current is
lower than the expec-
ted rated current. Secondary current
overload
See Application
manual - Spot options
3HAC050979-001
.
Check the pro-
grammed force.
Perform a force calib-
ration. Welding force too low
Check/change the
programmed thick-
ness. Wrong value of the
programmed sheet
thickness Shock/noise when
closing
Check/change the
program. Sheet geometrical is-
sue
Check parameters,
reload if it is neces-
sary. Bad parameters Unstable force at
electrode tips level
Do a parameter tun-
ing.
74 Product manual - GWT C9
3HAA010198-001 Revision: A
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4 Maintenance
4.3 Trouble shooting
Continued