Kemppi LT 250 User Manual

MasterTig

LT 250

Operating manual

Bruksanvisning

Gebrauchsanweisung

Manual de instrucciones

Käyttöohje

Manuel d’utilisation

Manuale d’uso

Gebruiksaanwijzing

Brugsanvisning

Instrukcja obsługi

Manual de utilização

Инструкции по эксплуатации

Bruksanvisning

操作手册

OPERATING MANUAL

English

CONTENTS

1. Preface ........................................................................................................... 3

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

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

2. Before you start using the unit ............................................................... 4

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

2.2 Positioning and location of the machine ...................................................................... 4

2.3 Power supply connection.................................................................................................... 4

2.4 Serial number ........................................................................................................................... 4

2.5 General view of the machine ............................................................................................. 5

2.6 Welding cable connections ................................................................................................ 6

3. Use .................................................................................................................. 7

3.1 TIG welding ............................................................................................................................... 7

3.2 Shielding gas ............................................................................................................................ 8

3.3 Connection for MMA welding ........................................................................................... 9

3.4 Operating functions ............................................................................................................10

3.4.1 Welding current regulation and remote control .........................................................10

3.4.2 MMA welding settings ..................................................................................................10

3.4.3 TIG welding function .....................................................................................................11

4. Setup features ........................................................................................... 12

5. Error codes ................................................................................................. 13

5.1 Troubleshooting ...................................................................................................................13

6. Maintenance .............................................................................................. 14

6.1 Daily maintenance ...............................................................................................................14

6.2 Storage .....................................................................................................................................14

6.3 Disposal of the machine ....................................................................................................14

7. Ordering numbers .................................................................................... 15

8. Technical data ............................................................................................16

MasterTig LT 250

1. PREFACE

1.1 General

Congratulations on choosing the MasterTig LT 250 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

MasterTig LT 250 is a high quality DC TIG and MMA welding source for industrial applications. MasterTig LT 250 requires no mains input voltage supply and is powered from the supply voltage provided by a parent power source. See item 2.3.

Before using or doing any maintenance work on the machine, read the operating manual and keep it for further reference.

2. BEFORE YOU START USING THE UNIT

NOTE! Please read the separate safety instruction booklet provided before you commence welding. Pay

particular attention to the risks associated with re and explosion.

2.1 Unpacking

Always before using the equipment, make sure it was not damaged during transportation. Also check that you have received what you ordered and that there are instructions for it.

The packaging material of the products is suitable for recycling.

Transportation

The machine should be transported in an upright position.

NOTE! Always move the welding machine by lifting it from the handle. Never pull it from the welding

torch or other cables.

Environment

The machine is suitable for both indoor and outdoor use, but it should be protected from rain and sunshine. Store the machine in a dry and clean environment and protect it from sand and dust during use and storage. The recommended operating temperature range is -20 °C – +40 °C. Place the machine in such a way that it does not come in contact with hot surfaces, sparks and spatters. Make sure the air ow in the machine is unrestricted.

2.2 Positioning and location of the machine

Place the machine on a rm, dry and level surface. Where possible, do not allow dust or other impurities to enter the machines cooling air ow. Preferably site the machine above oor level; for example on a suitable carriage unit.

Notes for positioning the machine

• The surface inclination should not exceed 15 degrees.

• Ensure the free circulation of the cooling air. There must be at least 20 cm of free space in

front of and behind the machine for cooling air to circulate.

• Protect the machine against heavy rain and direct sunshine.

NOTE! The machine should not be operated in the rain as the protection class of the machine, IP23S,

allows for outside preserving and storage only.

NOTE! Never use a wet welding machine.

NOTE! Never aim metallic grinding spray/sparks towards the equipment.

2.3 Power supply connection

MasterTig LT 250 requires no mains input voltage supply and is powered by the supply output voltage from a parent welding power source. You can use either a Constant Current (CC) or Constant Voltage (CV) parent power source normally used for MMA or MIG/MAG welding, or a welding generator with a suitable output characteristic.

NOTE! The performance of the parent power source can limit the maximum output of MasterTig LT 250.

2.4 Serial number

Serial number of the machine is marked on the rating plate. The serial number is the only proper means of identifying parts for a specic product. It is important to make correct reference to the serial number of the product when making repairs or ordering spare parts.

MasterTig LT 250

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