449POWERCUT-1250 / 1500MAINTENANCETROUBLESHOOTINGSCHEMATIC DIAGRAMSREPLACEMENT PARTS

458 c. To check if the output is shorted, measure the resistance by putting the ohmmeter leads across the output. Put the black lead to the

459F. High Frequency and Pilot Arc are on but Main Arc does not transfer.1. Make sure work clamp is connected to work material.2. Check the torch.

460Figure 5.1 IGBT Gating Signal5.2 REFERENCE VOLTAGE CHECKSA. Control Board Assembly (PCB1) 1. LED’s LED- (D9) - Torch Switch LED- (D4)

461 TORCH SWITCH OPEN CLOSE GAS SOLENOID VALVE PREFLOW FLOW SWITCH CLOSE FAULT OVERLOAD LIGHT

462 PUSH RELEASE PUSH RELEASE TORCH SWITCH OPEN CLOSE GAS SOLENOID VALVE

463SECTION 5 TROUBLESHOOTINGNOTE:Schematics and Wiring Diagrams on 279.4mm x 431.8mm (11” x 17”) paper are included inside the back cover of this man

464SECTION 5 TROUBLESHOOTING

465SECTION 5 TROUBLESHOOTING

466SECTION 5 TROUBLESHOOTING

467SECTION 6 REPLACEMENT PARTS6.1 GeneralAlways provide the serial number of the unit on which the parts will be used. The serial number is stamped

450

468SECTION 6 REPLACEMENT PARTS

469REVISION HISTORYOriginal release of this manual is 05/2003.1. Revision of 11/2003 changed panel views to show updated voltage switch.2. Revision of

ESAB ABSE--695 81 LAXÅSWEDENPhone +46 584 81 000Fax +46 584 123 08www.esab.comESAB subsidiaries and representative officesEuropeAUSTRIAESAB Ges.m.b.HV

451SECTION 4 MAINTENANCE4.0 GENERALIf this equipment does not operate properly, stop work immediately and investigate the cause of the malfunction.

452SECTION 4 MAINTENANCEListed below are common cutting problems followed by the probable cause of each. If problems are de-termined to be caused by

453SECTION 4 MAINTENANCEP/N 0558008966PART NUMBER QTY DESCRIPTION0558006151 2 IGBT DUAL 150A 600V38224 1 PCB IGBT DRIVER05S12020 4 SCREW SKT

454SECTION 4 MAINTENANCE

4555.0 TROUBLESHOOTINGELECTRIC SHOCK CAN KILL! Be sure that all primary power to the machine has been externally disconnected. Open the line (wall)

4565.1 TROUBLESHOOTING GUIDEA. Power Light does not come on.1. Visually inspect the machine for any damage.2. Check following: a. Check if th

4572. Check transformer secondary voltages at the output diode modules. Refer to system sche-matic. Replace the transformer module if the correct sec