ESAB Heliarc 252 - SECTION 1 DESCRIPTION; 1.1 INTRODUCTION; 1.2 DUTY CYCLE; SECTION 2 INSTALLATION

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TABLE OF CONTENTS
SECTION
PARAGRAPH TITLE PAGE
SAFETY PRECAUTIONS ................................................................................ 5-10
SECTION 1 DESCRIPTION .................................................................................................... 11
1.1 Introduction ......................................................................................................... 11
1.2 Duty Cycle ........................................................................................................... 11
SECTION 2 INSTALLATION .................................................................................................. 15
2.1 General ............................................................................................................... 15
2.1.1 Unpacking and Placement .................................................................................. 15
2.2 Primary (Input) Electrical Connection ................................................................. 16
2.3 Secondary (Output) Connection ......................................................................... 20
2.4 Accessories ......................................................................................................... 20
SECTION 3 OPERATION ....................................................................................................... 23
3.1 Control Function .................................................................................................. 23
3.2 Sequence of Operation ....................................................................................... 27
3.2.1 Stick Electrode/Shielded Metal Arc Welding ....................................................... 27
3.2.2 Tig Welding ......................................................................................................... 27
SECTION 4 MAINTENANCE .................................................................................................. 31
4.1 Maintenance ........................................................................................................ 31
4.1.1 Cleaning .............................................................................................................. 31
4.1.2 Lubrication........................................................................................................... 31
4.1.3 Spark Gap Servicing ........................................................................................... 31
4.1.4 Spark Gap Adjustment ........................................................................................ 32
4.1.5 Testing and Replacing Bridge Assembly Components ....................................... 32
4.1.6 Dip Switch Settings of Main Control Board Assembly ......................................... 33
SECTION 5 TROUBLESHOOTING ........................................................................................ 35
5.1 General ............................................................................................................... 35
SECTION 6 REPLACEMENT PARTS .................................................................................... 43
6.1 General ............................................................................................................... 43
6.2 Ordering .............................................................................................................. 43