Kemppi Minarc 150AU User Manual

Operation instructions • english

MINARC 150 AU

1910150AU

CONTENTS

1. PREFACE ..............................................................................................................3

1.1. Introduction ...................................................................................................3

1.2. Product introduction......................................................................................3

1.3. Operation safety............................................................................................3

2. BEFORE YOU START USING THE UNIT.............................................................4

2.1. Unpacking.....................................................................................................4

2.2. Placing the unit .............................................................................................4

2.3. Serial number................................................................................................4

2.4. Main components..........................................................................................4

2.5. Connecting to power supply mains...............................................................5

2.6. Filler materials and equipment......................................................................5

3. USE ......................................................................................................................5

3.1. Welding processes........................................................................................5

3.1.1. Manual Metal Arc welding (MMA)............................................................5

3.1.2. TIG welding .............................................................................................6

3.2. Operating functions.......................................................................................6

3.3. Welding selections........................................................................................6

3.3.1. Manual Metal Arc welding (MMA)............................................................6

3.3.2. DC TIG welding .......................................................................................7

3.4. Welding.........................................................................................................7

3.4.1. Earthing ...................................................................................................7

3.4.2. Welding....................................................................................................7

3.5. Storing...........................................................................................................7

4. MAINTENANCE.....................................................................................................7

4.1. Daily maintenance ........................................................................................8

4.2. Troubleshooting ............................................................................................8

5. ORDERING NUMBERS.........................................................................................8

6. TECHNICAL DATA................................................................................................9

2 – Minarc 150AU / 0411

© COPYRIGHT KEMPPI OY

1. PREFACE

1.1. INTRODUCTION

Congratulations on having purchased a KEMPPI product. Properly installed and used
KEMPPI products should prove to be productive machines requiring only a small amount
of regular maintenance.
This manual is arranged to give you a good understanding of the equipment and its safe
use. There is also information on both servicing the unit as well as its technical data.
Read the instructions before taking the machine into use or servicing it for the fi rst time.
Additional information on Kemppi products and their use can be obtained from Kemppi
or a Kemppi dealer.
The specifi cations and designs presented in this manual are subject to change without prior
notice.
In this document, for danger to life or injury the following symbol is used:

Read the warnings carefully and follow the instructions. Please also study the operation safety
instructions and respect them when installing, operating and servicing the machine.

1.2. PRODUCT INTRODUCTION

Kemppi Minarc 150AU is a Manual Metal Arc welding machine, small in size, suitable
for industry, site and repair welding. The unit uses one phase connection voltage.
Minarc 150AU is equipped with so called Voltage Reduction Device (VRD) function to
avoid danger of electric shock. VRD maintains open circuit voltage under 35 V.
Minarc tolerates a great fl uctuation of input voltage and is thus suitable for work on sites
using generator as well as to be used with long power cables. Inverter technology has
been used when designing the unit. Power regulation in power source is done with IGBT
transistors. Welding and earth cables are supplied with the unit. They are equipped with
suitable electrode holder, earth clamps and connections for the unit.
Minarc can also be used for TIG welding. TIG arc is started by scratching. Ordering
numbers of additional equipment for TIG welding can be found under 5. Ordering
numbers.

1.3. OPERATION SAFETY

Read the warning texts carefully and follow the instructions.

Arc and welding spatter

Arc and the refl ected radiation from it can damage unprotected eyes. Shield your eyes and
protect your surroundings appropriately before you start welding. Arc and welding spatter
will burn unprotected skin. When welding, use protective gloves and clothing.

Danger of fi re and explosion

Observe the fi re safety instructions. Remove fl ammable material around the place where
you will weld. Have necessary fi re extinguishing equipment at hand when you weld. Note
dangers caused by special jobs, such as risk of fi re and explosion when welding tanks.
Note! Sparks may ignite fi re even hours later!
Welding is working with fi re, note special instructions for such work.

© COPYRIGHT KEMPPI OY

Minarc 150AU / 0411 – 3