EN
1. PREFACE
1.1 GENERAL
Congratulations on your choice of the Kemppi MasterTig MLS ACDC welding system. Reliable
and durable, Kemppi products are aordable to maintain, and they increase your work
productivity.
This user manual contains important information on the use, maintenance and safety of
your Kemppi product. The technical specications of the device can be found at the end of
the manual. Please read the manual carefully before using the equipment for the rst time.
For your 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 INTRODUCTION
Kemppi Mastertig MLS ACDC is a family of TIG welding machines designed for industrial use,
with characteristics especially suitable for welding materials like aluminium and stainless steel.
The equipment consists of power source, function panel and welding torch. The cooling unit
Mastercool 30 is used in water-cooled TIG welding. The welding torch can be either water-
cooled or gas-cooled.
Multipurpose power sources Mastertig MLS™ 3000 and 3003 ACDC of 300 A maximum current
is designed for demanding professional welding, suitable for electrode, TIG and pulsed TIG
welding with both direct and alternating current. The power source is controlled with IGBT
transistors with a frequency of approximately 30 kHz, and the operational functions with a
microprocessor.
Mastertig MLS 3000 ACDC is connected to a 400-V three-phase network. Mastertig MLS 3003
ACDC is a multi-voltage power source that operates steplessly in the three-phase range
230–460 V.
Mastertig MLS 3000 ACDC VRD is equipped with so called Voltage Reduction Device (VRD)
function to avoid danger of electric shock. VRD maintains open circuit voltage under 35 V.
3
MasterTig MLS 3000, 3003 ACDC / © Kemppi Oy / 1112
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