Lincoln Electric IM924 manual Wfs

E-7	TROUBLESHOOTING	E-7
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF MISADJUSTMENT(S)

RECOMMENDED

COURSE OF ACTION

General degradation of the weld	1.Check for feeding			problems, bad
performance		connections, excessive			loops in
		cabling, etc.
	2.	Verify weld mode is correct for
		processes.
	3. The power source may require cal-
		ibration.
	4.	Check the actual current displayed
		on the Power Feed 10 vs. actual
		current	measured	via	external
		meter.
	5.	Check the actual voltage dis-
		played on the Power Feed 10 vs.
		actual voltage measured via exter-
		nal meter.
	6.	Check the actual WFS displayed
		on the Power Feed 10 vs. actual
		WFS	measured	via	external
		meter.
						If all recommended possible areas
Excessively long and erratic arc.	1.	Check for proper configuration and
						of misadjustments have been
		implementation of voltage sensing				checked and the problem persists,
		circuits.				contact your local Lincoln
In the STT mode, the arc is exces-	1.	Check that the (21) work sense				Authorized Field Service Facility.
sively long and erratic.		lead is connected, and configured
		properly.
In the STT mode, the spatter is	1.	Check that the (21) work sense
higher than normal and the arc is		lead is connected, and configured
inconsistent.		properly. (Dip Switch Set)
	2.	Verify that the electrode lead is
		connected to the STT stud and
		not the “POWER WAVE” stud.
	3 Check that the “POWER WAVE”
		stud is not electrically connected
		to the STT stud.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

POWER WAVE 455M/STT (CE)