Valley FABRICATOR 251 Service Manual - page 4

TABLE OF CONTENTS

SECTION 1:

SAFETY INSTRUCTIONS AND WARNINGS ....................................................... 1-1

1.01 Arc Welding Hazards ...................................................................................... 1-1

1.02 Principal Safety Standards ............................................................................. 1-4

1.03 Symbol Chart ................................................................................................. 1-5

1.04 Precautions De Securite En Soudage A L’arc .................................................. 1-6

1.05 Dangers relatifs au soudage à l’arc ................................................................. 1-6

1.06 Principales Normes De Securite ..................................................................... 1-9

1.07 Graphique de Symbole ................................................................................. 1-10

SECTION 2:

INTRODUCTION ...................................................................................... 2-1

2.01 How To Use This Manual ................................................................................ 2-1

2.02 Equipment Identification ................................................................................. 2-1

2.03 Receipt Of Equipment ..................................................................................... 2-1

2.04 General Information ....................................................................................... 2-2

2.05 Safety ............................................................................................................. 2-2

2.06 Protective Filter Lenses .................................................................................. 2-2

2.07 User Responsibility ........................................................................................ 2-2

2.08 Duty Cycle ...................................................................................................... 2-3

2.09 Specifications ................................................................................................. 2-3

2.10 Included Items ............................................................................................... 2-5

2.11 Optional Accessories ...................................................................................... 2-5

SECTION 3:

INSTALLATION ....................................................................................... 3-1

3.01 Environment ................................................................................................... 3-1

3.02 Location ......................................................................................................... 3-1

3.03 Ventilation ...................................................................................................... 3-1

3.04 Mains Supply Voltage Requirements .............................................................. 3-2

3.05 Alternative Mains Supply Voltages ................................................................. 3-2

3.06 Quick Setup .................................................................................................... 3-4

3.07 Installation of Shielding Gas (GMAW) Process .............................................. 3-4

3.08 Attaching the Gun and Cable Assembly to the Power Source ......................... 3-7

3.09 Input And Output Wire Guide Installation ....................................................... 3-9

3.10 Selection and Installation of Feedrolls ............................................................ 3-9

3.11 Installing Wire Spool .................................................................................... 3-10

3.12 Inserting Wire into the Feedhead .................................................................. 3-11

3.13 Wirefeeder Drive Roller Pressure Adjustment .............................................. 3-12

3.14 Wire Reel Hub Brake .................................................................................... 3-12

3.15 Spool Gun Attachment ................................................................................. 3-13

3.16 Polarity Changeover ..................................................................................... 3-14