Kemppi FastMig 420MV Bedienungsanleitung

FastMig

M 420MV

Operating manual

Brugsanvisning

Manual de instrucciones

Manual de utilização

OPERATING MANUAL

English

FastMig M 420MV

CONTENTS

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

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

1.2 About FastMig M 420MV ..................................................................................................... 4

1.2.1 Operation control and connectors................................................................................. 4

1.3 Accessories................................................................................................................................ 4

1.3.1 Remote control devices................................................................................................... 4

1.3.2 Cables ............................................................................................................................... 5

2. Installation............................................................................................................................. 6

2.1 Positioning of the machine ................................................................................................ 6

2.2 Distribution network............................................................................................................. 6

2.3 Connection to the mains supply ...................................................................................... 7

2.4 Welding and earth return cables...................................................................................... 7

3. Operation controls........................................................................................................... 8

3.1 Main switch I/O ....................................................................................................................... 8

3.2 Pilot lamps................................................................................................................................. 8

3.3 Operation of cooling fan ..................................................................................................... 8

4. Manual metal arc welding.......................................................................................... 8

5. Maintenance........................................................................................................................ 9

5.1 Daily maintenance................................................................................................................. 9

5.2 Periodic maintenance........................................................................................................... 9

5.3 Service Workshop maintenance....................................................................................... 9

6. Operation disturbances.............................................................................................10

7. Disposal of the machine............................................................................................10

8. Ordering numbers.........................................................................................................11

9. Technical data...................................................................................................................12

1. INTRODUCTION

1.1 General

Congratulations on choosing the FastMig welding 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.

FastMig M 420MV

1.2 About FastMig M 420MV

FastMig M 420MV is multi-operator power source designed for demanding professional use. It

is suitable for MMA and MIG welding in DC.

1.2.1 Operation control and connectors

6,3A

5. 7.

1. Fuse (delayed 6.3 A)

2. Signal lamp

3. Warning lamp for thermal protection

4. Main switch

5. Welding connection

6. Earth connection

7. Control cable connection

8. Inlet of mains cable

1.3 Accessories

1.3.1 Remote control devices

R10

1. Control of MMA/TIG welding current, reference

scale 1 … 5.

R20

1. 1. Wire feed adjustment, electrode current

adjustment.

2. Voltage adjustment.

MIG-MAG remote control device with controls for wire feed and voltage, memory scales 1 … 5.

You can use control device also for control of MMA current.

1.3.2 Cables

NOTE ! Always check before use that the mains cable, earth return cable and its clamp,

interconnection cable and shielding gas hose are in a serviceable condition. Ensure that connectors

are correctly fastened. Loose connectors can impair welding performance and damage connectors.

Liquid-cooled system: FastMig power source + MXF + FastCool 10

10.

1. MXF wire feed unit

2. FastMig power source

3. FastCool water cooler and power connection

4. Gas supply

5. MMA electrode holder

6. Remote control device

7. Liquid cooled welding Gun

8. Power cable

9. Earth return cable and clamp

10. Control cable

FastMig M 420MV

Air-cooled system: FastMig power source + MXF

1. MXF wire feed unit

2. FastMig power source

3. Gas supply

4. MMA electrode holder

5. Remote control device

6. Air cooled welding Gun

7. Power cable

8. Earth return cable and clamp

9. Control cable

2. INSTALLATION

2.1 Positioning 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 aim metallic grinding spray/sparks towards the equipment.

2.2 Distribution network

All regular electrical devices without special circuits generate harmonic currents into

distribution network. High rates of harmonic current may cause losses and disturbance to

some equipment.

This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc

is greater than or equal to 5.6 MVA at the interface point between the user’s supply and

the public supply network. It is the responsibility of the installer or user of the equipment

to ensure, by consultation with the distribution network operator if necessary, that the

equipment is connected only to a supply with a short-circuit power Ssc greater than or equal

to 5.6 MVA.

NOTE! The above applies only when connected to the mains supply of 380...440 V 3~.

2.3 Connection to the mains supply

FastMig power sources are delivered equipped with 5 m mains cable without plug.

If local electricity regulations of operating country are stating otherwise, the mains cable

should be replaced in conformity with the local regulations.

Connection of the mains cable, mounting and change of the plug should only be carried out

by a competent electrician.

Remove the machine’s right side plate to enable the mounting of a mains cable.

M 420MV power source can be connected to the mains supply of 220...230 V 3~ or 380...440 V

3~ .

If changing the mains cable take into consideration the following:

The cable is entered into the machine through the inlet ring on the rear panel of the machine

and fastened with a cable clamp (05). The phase conductors of the cable are coupled to

connectors L1, L2 and L3. The earth protection coloured green-yellow is coupled to connector.

NOTE! If you are using 5-lead cable, do not connect neutral conductor.

Sizes of the mains cables and fuse ratings for the machine at 100 % duty cycle are specied in

the table below:

Rated voltage Fuses, slow-blow Connection cable *) mm²

380...440V 3~ 35 A H07RN-F 4G10 (10 mm²)

220...230V 3~ 50 A H07RN-F 4G10 (10 mm²)

*) In cables of S type there is a protective grounding conductor coloured green-yellow.

2.4 Welding and earth return cables

Recommended copper cables with cross-sectional area are as follows:

FastMig M 420MV 70 ... 95 mm²

In enclosed table are shown typical load capacities of rubber insulated copper cables, when

ambient temperature is 25º C and lead temperature is 85º C.

Cable Duty cycle ED Voltage loss / 10 m

100 % 60 % 30 %

50 mm² 285 A 370 A 520 A 0,35V / 100 A

70 mm² 355 A 460 A 650 A 0,25V / 100 A

95 mm² 430 A 560 A 790 A 0,18V / 100 A

Do not overload welding cables due to voltage losses and heating.

NOTE ! Always check the serviceability of the earth return cable and clamp. Ensure the metal

surface to which the cable is connected is clean from metal oxide or paint. Check the connector to

the power source is fastened correctly.

FastMig M 420MV

3. OPERATION CONTROLS

3.1 Main switch I/O

When you turn the switch into I-position, pilot lamp H11 on the front face is illuminated and

the machine is ready for use.

NOTE! Always turn the machine on and o with the mains switch, never use the mains plugs as a

switch.

3.2 Pilot lamps

The pilot lamps of the machine report the electric operation:

The green pilot lamp H11 when lit indicates that the machine is on and ready for use and it is

connected to the mains supply with the main switch in the I-position.

H12 indicates when lit that the thermal protection of the machine has been activated due to

over heating. The cooling fan will continue to run and cool the machine down and when the

lamp is o the machine is ready to weld.

3.3 Operation of cooling fan

In FastMig power sources there are two simultaneously operating fans.

• The fan is started for a moment when main switch is placed into position I.

• The fan will start during welding as the machine heats up and it will run for 1 to 10

minutes after the welding has stopped.

4. MANUAL METAL ARC WELDING

The FastMig power source can be used in electrode welding by connecting a FastMig

MXF 63, MXF 65 or MXF 67 wire feeder to it. The power source can be made suitable for

electrode welding without a wire feeder by connecting an R10 or R20 remote control to the

X14 or X15 terminal at the back of the power source for welding current adjustment, and the

welding power cable connected to the power source’s (+) connector X11 or X12.

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