Lincoln Electric PCT125M manual Recommended

D-4		TROUBLESHOOTING		D-4
	Observe all Safety Guidelines detailed throughout this manual
	PROBLEMS	POSSIBLE CAUSE		RECOMMENDED
	(SYMPTOMS)			COURSE OF ACTION
		FUNCTION PROBLEMS
Only a brief spurt of a Pilot Arc		a. Make sure the air pressure is	a. Put the Pro-Cut in Purge and
appears		set correctly		adjust the air pressure to 55-65
				psi while the air is flowing.
		b. Consumables may be improper-	b. Make sure an electrode, swirl
		ly assembled.		ring, nozzle and shield cup are
				assembled in the torch.
		c. There may be oil in the air.	c. Check the filters in the regula-
				tors for oil. Replace if neces-
				sary and eliminate the source of
				oil.
		d. The Pro-Cut may be in expand-	d. This is a normal condition which
		ed metal mode.		occurs after several long pilot
				arcs have been pulled in a row.
				After a while, the Pro-Cut will
				return to the standard pilot arc if
				no pilot arcs are pulled for sev-
				eral seconds.
		e. The swirl ring may have holes	e. Some swirl rings were shipped
		out of spec.		with the swirl hole diameter too
				large. If possible, use plug
				gages to make sure the swirl
				hole diameter is not larger than
				.028”.
		f. The Pro-Cut is not working prop-	f.	Refer to the troubleshooting
		erly.		guide for the Pro-Cut 125.
Electrode Stuck in Torch head		a. The duty cycle may have been	a. Operate the Pro-Cut within the
		exceeded		duty cycle limits (125 Amps at
				60%, 100 Amps at 100%.)
		b. Make sure the Pro-Cut has the	b. Install a S21237 solenoid kit.
		larger solenoids (this applies to
		codes 10097 and lower only)
		c. Make sure the air pressure is	c. Put the Pro-Cut in Purge and
		set properly.		adjust the air pressure to 55-65
				psi while the air is flowing.

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.

PLASMA TORCH