CIGWELD WELDSKILL 180, Service Manual, Page: 6 / 80

TABLE OF CONTENTS
5.16 Making Welded Joints ..................................................................................... 5-6
5.17 Distortion ........................................................................................................ 5-9
5.18
The Cause of Distortion .................................................................................. 5-9
5.19 Overcoming Distortion Effects ........................................................................ 5-9
5.20 Welding Problems ........................................................................................ 5-11
SECTION 6:
TIG (GTAW) WELDING ............................................................................... 6-1
6.01 Shielding Gas Regulator/Flowmeter Operating Instructions ............................ 6-1
6.02 Setup For Lift TIG (GTAW) Welding ................................................................ 6-4
6.03 TIG (GTAW) Basic Welding Technique ............................................................ 6-5
6.04 TIG (GTAW) Welding Problems ....................................................................... 6-7
SECTION 7:
ROUTINE SERVICE REQUIREMENTS .............................................................. 7-1
7.01 Routine Maintenance & Inspection ................................................................. 7-1
7.02 Cleaning the Welding Power Source ............................................................... 7-3
SECTION 8:
THEORY OF OPERATION ............................................................................ 8-1
SECTION 9:
MAIN CIRCUIT DESCRIPTION ..................................................................... 9-1
SECTION 10:
PRELIMINARY TROUBLESHOOTING – POWER SOURCE ......................................10-1
10.01 Test Equipment and Tools ............................................................................. 10-1
10.02 How to Remove Cover .................................................................................. 10-1
10.03 Visually Inspect ............................................................................................. 10-1
10.04 DC Bus Preliminary Measurement in Inverter PCB ....................................... 10-2
10.05 IGBTs Preliminary Check in Inverter PCB ...................................................... 10-3
10.06 DC Bus Voltage Measurement in Inverter PCB .............................................. 10-5
SECTION 11:
ADVANCED TROUBLESHOOTING – POWER SOURCE ..........................................11-1
11.01 Recommendations when Replacing Primary Bridge Rectifier / IGBT / Secondary
Diode ............................................................................................................ 11-1
11.02 Power Source Issues, High OCV, No Fan or Abnormal Inverter Frequency ... 11-2
11.03 Power Indicator Not ON or No Output Power from Machine ......................... 11-4
11.04 IGBT Control IC Voltage Checks in Control PCB............................................ 11-5
11.05 Over Temperature Indicator ON & No Output from Machine ......................... 11-6
SECTION 12:
PCB CONNECTORS .................................................................................12-1
12.01 Inverter PCB ................................................................................................. 12-1
12.02 Control PCB .................................................................................................. 12-3
12.03 EMC PCB ...................................................................................................... 12-4
SECTION 13: KEY SPARE PARTS ........................................................................13-1
13.01 WeldSkill 180 Key Spare Parts ...................................................................... 13-1
CIGWELD - LIMITED WARRANTY TERMS
WARRANTY SCHEDULE – WELDSKILL 180 INVERTERS