Lincoln Electric IM818 manual Troubleshooting Guide, Cause, Remedy

Troubleshooting Guide

Trouble	Cause	Remedy
No wire feed at torch, feeder no	115/42VAC control fuse in feeder.	Replace fuse.
	Micro-switch defective/not being	Replace switch. Check switch for
operating, i.e. no slave motor or brake
	activated.	operation.
solenoid.
	Broken electrical cable.	Check micro-switch wires for continuity.
	4 amp fuse (F1) in feeder/Control box	Check motor leads for shorts; then
	blown.	replace fuse.
No wire feed at torch, feeder operating	Bad potentiometer.	Check potentiometer with meter.
		Check motor and potentiometer wire
properly.	Broken electrical cable.
		for continuity.
	Bad speed control/PCB	See specifi c cabinet/control box owners
		manual for speed control operation.
	Loose or no cable connections.	Check all power connections.
Wire feeds, but welding wire is not	Contactor control cable loose or in	Check power supply owner’s manual
		for location and type of contactor signal
energized.	wrong position.
		required, i.e., closing or 115 VAC.
	Welding power source.	Check power source material.
	Dirty or worn conduit.	Blow out or replace conduit.
	Incorrect ressure on drive rolls.	Adjust pressure at both feeder and
		torch.
Wire feeds erratically.
	Idler roll stuck.	Check for lock washer under idler roll,
		or replace if damaged.
	Wrong size contact tip.	See contact tip table.
	Bad potentiometer.	Check with meter.
	Broken electrical cable.	Check potentiometer wires for
Wire feeds one speed only.		continuity or short.
	Bad speed control.	See specifi c cabinet/control owner’s
		manul for speed control operation.
Wire walks out of drive rolls.	Idler roll upside-down.	Place groove in idler roll toward top.
	Rear wire guide missing.	Replace wire guide.
		Slide barrel insulator downa nd thread
Poor gas/water fl ow.	Incorrect placement of barrel insulator.	until it bottoms out, covering coolant
		ports and exposing gas ports.

Prince® XL - Owner's Manual - Page 15