Lincoln Electric PCT125M manual Troubleshooting

D-3		TROUBLESHOOTING		D-3
	Observe all Safety Guidelines detailed throughout this manual
	PROBLEMS	POSSIBLE CAUSE	RECOMMENDED
	(SYMPTOMS)		COURSE OF ACTION

FUNCTION PROBLEMS

The Safety LED is lit

a.The Pro-Cut was quickly turned “off” then “on” again.

b.The shield cup is missing.

c.The shield cup is not making contact with the pins of the torch head

d.Torch misconnected

e. Cable damaged

f.Standoff too high

g.Pro-Cut inoperative

a.Press the SAFETY RESET but- ton.

b.Make sure an electrode, swirl ring, nozzle and shield cup are all properly assembled on the torch.

c.Verify that the spring loaded ring in the back of the shield cup is not jammed. Replace as neces- sary.

d.Make sure the pilot lead from the torch cable is connected to the pilot stud inside the Pro-Cut. Verify that the fitting at the end of the gas tube is connected to the bulkhead union inside the Pro-Cut.

e.Examine the cable for cuts or punctures. Make sure there is continuity from the nozzle at the torch head to the ring lug at the end of the pilot lead at the machine end of the cable. Make sure there is continuity from the electrode at the torch head to the fitting at the end of the gas tube at the machine end the cable. Replace any dam- aged cable.

f.Maintain a standoff of .15” to

.25” during cutting. Too high of a standoff may trip the safety circuit..

g.Refer to the troubleshooting guide for the Pro-Cut 125

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