Kemppi MMT 42C Bedienungsanleitung

Operating manual

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Manuel d’utilisation

Manual de instrucciones

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Manual de utilização

Manuale d’uso

MMT

42C

OPERATING MANUAL

English

CONTENTS

1. Introduction ......................................................................................................................... 3

1.1 General ....................................................................................................................................... 3

1.2 Product Introduction ............................................................................................................ 3

1.3 Operation Safety..................................................................................................................... 4

2. Connecting the gun........................................................................................................ 5

3. Use and maintenance.................................................................................................... 7

4. Operation disturbances .............................................................................................10

5. Ordering numbers.........................................................................................................11

6. Technical data...................................................................................................................12

MMT 42C

1. INTRODUCTION

1.1 General

Congratulations on choosing the Kemppi equipment. Used correctly, Kemppi products can

signicantly increase the productivity of your welding, and provide years of economical

service.

This operating manual contains important information on the use, maintenance and safety of

your Kemppi product. The technical specications of the equipment can be found at the end

of the manual.

Please read the manual carefully before using the equipment for the rst time. For your

own safety and that of your working environment, pay particular attention to the safety

instructions in the manual.

For more information on Kemppi products, contact Kemppi Oy, consult an authorised Kemppi

dealer, or visit the Kemppi web site at www.kemppi.com.

The specications presented in this manual are subject to change without prior notice.

Important notes

Items in the manual that require particular attention in order to minimise damage and

personal harm are indicated with the NOTE! notation. Read these sections carefully and follow

their instructions.

Disclaimer

While every eort has been made to ensure that the information contained in this guide

is accurate and complete, no liability can be accepted for any errors or omissions. Kemppi

reserves the right to change the specication of the product described at any time without

prior notice. Do not copy, record, reproduce or transmit the contents of this guide without

prior permission from Kemppi.

1.2 Product Introduction

The MMT 42C is an air-cooled MIG/MAG welding gun for mechanised welding applications.

It is specially designed to be used with Kemppi welding carriages. This welding gun has a

straight neck and no trigger. Its operation is controlled by the welding equipment through the

data cable. This welding gun cannot be used for manual welding.

1.3 Operation Safety

Please read and follow these operational safety instructions when installing, operating and

servicing the welding gun.

Welding arc and welding spatter

Welding arc can harm unprotected eyes. Also be aware of the risks to other people in and

around the working area, as reected arc and arc ash presents a serious risk. Welding arc

and hot spatter will burn unprotected skin. Use specied, good quality safety equipment and

protective clothing.

Danger for re or explosion

Observe the local re safety regulations and complete an adequate risk assessment, prior to

commencing work. Remove ammable or explosive materials from welding place. Always

ensure there is adequate re-ghting equipment available. Be aware of welding hazards eg.

the danger of re or explosion when welding container type work pieces or enclosed spaces.

NOTE! Fire can start from welding sparks and hot spatter, even several hours after the welding

work has nished!

Mains voltage

Never take the welding machine inside a work piece (eg. container or truck). Do not place

the welding machine on a wet surface. Always check cables before operating the machine.

Change defective cables without delay. Defective cables may cause an injury or increase

the risk of re. Connection cables and hoses should be protected from damage from heavy

objects, sharp edges or hot work pieces.

Welding power circuit

Protect yourself by using proper protective clothing suitable for the welding application

and environment. Do not work in wet or damp conditions. Do not wear wet clothing when

welding. Never use equipment with defective or damaged cables. Unless in a designed gun

holder, do not place the welding gun on the welding machine if the machine is live. Never

point the welding gun towards your face or that of others.

Welding fumes

Ensure there is sucient ventilation during welding. Observe safety recommendations and

precautions when welding metals which contain lead, cadmium, zinc, mercury or beryllium

and other harmful substances. Ensure you use appropriate protective respiratory equipment

suitable for the welding application, environment and materials being welded.

MMT 42C

2. CONNECTING THE GUN

Before connecting the gun to the welding machine, check wire liner and contact tip suit the

wire type and size used. For further information, please refer to consumables section later in

this document on page 11.

Dress the sharp ller wire. Improves wire loading and consumables life.

Connect the welding gun and hand tighten the collar.

ARC

START

STOP

MagTrac F 61

SET

CH OFF

GAS TEST

WIRE INCH

WELD DATA

Load ller wire using the WIRE INCH button.

If you are using Kemppi MagTrac F 61 welding carriage, you can load the wire by selecting

Wire Inch option in the MagTrac control panel menu. For more information, see MagTrac F 61

operating manual.

FE 32

l/min

ARC

START

STOP

MagTrac F 61

SET

CH OFF

GAS TEST

WIRE INCH

CYCLE WELD

Check gas ow rate and adjust to suit your application.

Trim excess ller wire at a slight angle, before welding. Improves ignition.

MMT 42C

Mount the welding gun to the welding carriage and connect the data cable connector to the

socket on the carriage.

Adjust the position of the gun in the carriage so that it points to the right spot and is in the

right angle and distance from the groove.

For more information, see welding carriage documentation.

3. USE AND MAINTENANCE

The amount of use and working environment should be taken into consideration when

planning the maintenance of MIG guns. Correct use and preventive maintenance will help

ensure trouble-free operation and excellent gun life.

Due to high temperatures and wear, the welding end of the MIG gun requires the most

frequent maintenance. The condition of other parts, including the gun cable, should also be

checked for wear or damage.

When tting new liners, lay the gun straight on a at surface.

The gun is equipped at the factory with a spiral liner for welding normal steel wire. Before

connecting the gun to the welding machine, make sure that the liner type meets the

recommendations for the welding ller wire to be used.

Components can become lose during welding heat cycles. Check regularly.

Gun cable

Clear dust from the liner every day during heavy use.

• Clean wire liner when replacing wire reel, or more often.

• Check daily that insulations of handle and gun cable are undamaged.

• Check that there are no sharp bends in gun cable.

Check and remove any spatter build-up from the nozzle.

MMT 42C

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