Kemppi MMT 42C Manuel utilisateur
Operating manual
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MMT
42C
OPERATING MANUAL
English
EN
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
2
EN
1. INTRODUCTION
1.1 General
Congratulations on choosing the Kemppi equipment. Used correctly, Kemppi products can
signicantly 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 specications 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 specications 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 eort 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 specication 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.
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© Kemppi Oy / 1131
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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 reected arc and arc ash presents a serious risk. Welding arc
and hot spatter will burn unprotected skin. Use specied, 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 sucient 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
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EN
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.
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© Kemppi Oy / 1131
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ARC
ON
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
5
10
15
20
ARC
ON
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
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EN
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.
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© Kemppi Oy / 1131
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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
8
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