Lincoln Electric IM736-D manual Troubleshooting, Problems Possible Areas Symptoms Misadjustments

E-2	TROUBLESHOOTING	E-2
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS		POSSIBLE AREAS OF
(SYMPTOMS)		MISADJUSTMENT(S)
Major physical or electrical damage	1.	Contact your local authorized
is evident when the sheet metal		Lincoln Electric Field Service
covers are removed.		facility for technical assistance.
Input fuses keep blowing, or input	1.	Make certain that the fuses or
breaker keeps tripping		breakers are properly sized. See
		installation section of the manual
		for recommended fuse and
		breaker sizes.
	2.	Welding procedure is drawing too
		much output current, or duty
		cycle is too high. Reduce output
		current, duty cycle or both.
	3.	There is internal damage to the
		power source. Contact an autho-
		rized Lincoln Electric Service
		facility.
Machine will not power up (No lights)	1.	Make certain that the power
		switch is in the "ON" position.
	2.	Input voltage selection made
		improperly. Power down, check
		input voltage reconnect accord-
		ing to diagram on reconnect
		cover.
Machine won’t weld, can’t get any	1.	If the displays show an Err ###
output.		see the fault section for correc-
		tive action.
	2.	If the displays are not lit refer to
		machine will not power up sec-
		tion.
	3.	If the thermal symbol is lit refer to
		the thermal section.
Thermal symbol is lit	1.	Check for proper fan operation
	2.	Check for material blocking
		intake or exhaust louvers.

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.

POWER MIG 300