Lincoln Electric IM756-A manual Welding Problems

E-4	TROUBLESHOOTING	E-4
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS	POSSIBLE
(SYMPTOMS)	CAUSE
		WELDING PROBLEMS
Bead is too thin (intermittently).	1.	Travel speed is inconsistent.
		Decrease and maintain a con-
		stant travel speed.
	2.	Output heat range is too low.
		Set the Low – High Heat Range
		switch to High or the Fine Heat
		Adjustment to MAX.
Bead is too thick (intermittently).	1.	Travel speed is slow and/or
		inconsistent. Increase and main-
		tain a constant travel speed.
	2.	Output heat range is too high.
		Set the Low – High Heat Range
		switch to Low or the Fine Heat
		Adjustment to MIN.
Bead does not penetrate base	1.	Travel speed is inconsistent.
metal.		Decrease and maintain a con-
		stant travel speed.
	2.	Output heat range is too low.
		Set the Low – High Heat Range
		switch to High or the Fine Heat
		Adjustment to MAX.
Wire sputters and sticks to work-	1.	The wire is damp. Change to dry
piece.		wire. Be sure wire is stored in a
		dry location.
	2.	Wire feed speed (WFS) is too
		fast. Reduce WFS.
Edge of weld has ragged depres-	1.	Travel speed is too fast. Reduce
sions.		travel speed.
	2.	WFS is too fast. Reduce WFS.
	3.	Output heat range is too high.
		Set the Low – High Heat Range
		switch to Low or the Fine Heat
		Adjustment to MIN

RECOMMENDED COURSE OF ACTION

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

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.

HANDY MIG