Lincoln Electric IM583-A Troubleshooting Guide, Problems, Possible Areas Of, Recommended

E-5				TROUBLESHOOTING		E-5
			Observe all Safety Guidelines detailed throughout this manual
TROUBLESHOOTING GUIDE						Observe Safety Guidelines
					detailed in the beginning of this manual.
	PROBLEMS			POSSIBLE AREAS OF		RECOMMENDED
	(SYMPTOMS)			MISADJUSTMENT(S)		COURSE OF ACTION
					OUTPUT PROBLEMS
		Machine often “noodle welds” (out-		Secondary current limit has been
		put is limited to approximately 100		exceeded, and the machine has
		amps) when running a particular		phased back to protect itself.
		procedure		Adjust procedure or reduce load to
				lower current draw from the
				machine.
		Machine won’t produce full output.		1. Input voltage may be too low,
					limiting output capability of the
					power source. Make certain
					that the input voltage is prop-
					er, according to the Rating
					Plate located on the rear of
					the machine.
				2.	Input may be “single phased”.
					Make certain the input voltage
					is proper on all three input
					lines.
		For no apparent reason, the weld-		1.	Check for proper Wire Feed	If all recommended possible areas
		ing characteristics have changed.			Speed setting. In CV MIG
						of misadjustments have been
					and FCAW modes, check for
						checked and the problem persists,
					proper Voltage setting. In the
						contact your local Lincoln
					MIG/MAG pulse modes,
					check the Trim setting. These	Authorized Field Service Facility.
					controls are on the wire feed-
					er.
				2.	Check for proper shielding
					gas mix and flow.
				3.	Check for loose or faulty weld
					cables and cable connections.
		Auxiliary receptacle is “dead” — no		1. Circuit breaker CB2 (on case
		auxiliary voltage .			front) may have opened.
					Reset.
				2.	Circuit breaker CB4 (in recon-
					nect area) may have opened.
					Reset.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con- tact your local authorized Lincoln Electric Field Service Facility for technical assistance.

POWER WAVE 455