Northern Industrial Tools 164612 manual Troubleshooting See Table

*Regularly remove the spatter from the inside of the nozzle to prevent a short circuit. Use nozzle gel to minimize spatter buildup in the nozzle.

*Use appropriate wire listed on the parameter chart. Do not use rusty or dirty wire.

*Clean the dust and metal filings from the liner with compressed air. The dust is accumulated by friction between wire and liner, drive rolls and magnetic attraction of the wire to metal debris. If wire feeding is uneven this may be the problem.

*Do not over tighten the drive roll idler are, it will increase resistance, friction and possible deform the wire.

7. Troubleshooting

7.1 Troubleshooting (See Table)

No.	Problem	Possible Causes	Solutions
		Input fuse/breaker blown or tripped	Change fuse, reset breaker
	No wire feeding
1	function when	Power not connected	Check and turn on power
	MIG gun trigger is
	depressed.	MIG gun trigger leads or switch not working	Change trigger leads and MIG gun
			switch
		Potentiometer not set high enough	Change potentiometer
	Wire feeding	Wire stuck in contact tip	Change contact tip
2	motor doesn’t
			Tighten drive idle arm and check
	work	Drive idle arm too loose or wire is not
			to see if the wire is in the proper
		in groove.
			drive roll gear.
		Too large or worn contact tip results in unstable	Change contact tip to match the wire
		arc.	diameter
		Long light-duty gauge extension cord	Use 12 gauge or heavier extension
	Arc is unstable and		cord
3	produces excess
	spatter	Too low input voltage	Check input power for sufficient
			voltage
		Wire feed resistance is too high	Clean or replace the liner and use the
			MIG gun extended straight
		Ground clamp not connected or damaged	Connect or replace ground lead
4	No Arc
		Dirty work piece where ground clamp is	Remove rust, paint or other contaminants
		attached, preventing a proper ground	that prevent a good ground connection
		MIG gun O-ring or hose broken	Replace O-ring or gas hose in gun
5	No shielded gas	External gas hose pinched or not connected	Check gas system
		Solenoid or internal gas line not functioning or	Replace or secure gas hose connections,
		disconnected	replace solenoid.
6	Others		Call customer service
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