Lincoln Electric SVM104-A service manual Torch and Cable Resistance Test Procedure, Work

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TROUBLESHOOTING & REPAIR F-16

TORCH, TORCH CABLE ASSEMBLY, INTERNAL TRIGGER,

AND SAFETY CIRCUIT TEST

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TORCH AND CABLE

RESISTANCE TEST

PROCEDURE

1.Turn PRO-CUT 60 ON/OFF Power Switch to OFF.

2.Disconnect main power supply to machine.

3.Perform the CAPACITOR DISCHARGE PROCEDURE.

4.Disconnect and remove the torch cable from the bulkhead com- partment. See Figure F.3.

a.Locate the torch cable access door on the Right Case Side Assembly of the machine.

b.Remove the one sheet metal screw on the left-hand side of the access door and swing open the door.

c.Test for a voltage across the stud marked WORK and the bulkhead connector (brass fitting). NO voltage should be present. If a voltage is present, STOP. DO NOT perform this test. Contact the Lincoln Electric Service Department. If no voltage is present, continue test procedure.

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Right Case Side Assembly

Torch

Cable

Access

Door

➁	➂
➀	➃
	➄
	PILOT
	➅
	➆
➈	WORK
➇
➀ Strain Relief Clamp	➄ Pilot Lead
➁ 4-Pin Connector	➅ Bolt Hole
➂ Bulkhead Connector	➆ Work Stud
(Brass Fitting)	➇ Work Lead
➃ Gas Line	➈ Cable Boot

FIGURE F.3 - Torch Cable Connections PRO-CUT 60