Kemppi MasterTig MLS 4000 User manual

Operating manual • English
Käyttöohje • Suomi
Bruksanvisning • Svenska
Bruksanvisning • Norsk
Brugsanvisning • Dansk
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Manuel d’utilisation • Français
Manual de instrucciones • Español
Instrukcja obsługi • Polski
Инструкции по эксплуатации • По-русски
操作手册 • 中文
Manual de utilização • Português
Manuale d’uso • Italiano
EN
FI
SV
NO
DA
DE
NL
FR
ES
PL
RU
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Master MLS™
MasterTig MLS™
MasterCool™
2500, 3500
3000, 4000
10
PT
IT

OPERATING MANUAL
English
Master, MasterTig, MasterCool 10 / © Kemppi Oy / 1112

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CONTENTS
1. PREFACE................................................................................................................................ 3
1.1 General ....................................................................................................................................... 3
1.2 Product introduction ............................................................................................................ 3
2. INSTALLATION................................................................................................................. 4
2.1 Removal from packaging .................................................................................................... 4
2.2 Locating the machine........................................................................................................... 4
2.3 Serial number........................................................................................................................... 4
2.4 Installation ................................................................................................................................ 4
2.5 Installation of the panel....................................................................................................... 5
2.6 Distribution network............................................................................................................. 5
2.7 Mains connection................................................................................................................... 5
2.8 Welding cable connections................................................................................................ 6
2.8.1 Choosing welding polarity in MMA welding ................................................................. 6
2.8.2 Earthing............................................................................................................................ 6
2.9 Cooling unit to MasterCool 10 .......................................................................................... 6
2.10 Shield gas .................................................................................................................................. 7
2.10.1 Installation of gas bottle ................................................................................................. 8
3. OPERATION........................................................................................................................ 8
3.1 Welding processes ................................................................................................................. 8
3.1.1 MMA welding................................................................................................................... 8
3.1.2 TIG welding ...................................................................................................................... 9
3.1.3 Synergic Pulsed TIG welding (a)...................................................................................... 9
3.1.4 Long Pulsed TIG welding (b) ........................................................................................... 9
3.2 Operation functions .............................................................................................................. 9
3.2.1 Power source.................................................................................................................... 9
3.2.2 Function panels ............................................................................................................... 9
3.2.3 Saving welding settings (MTM) ....................................................................................16
3.2.4 Adopting the saved settings.........................................................................................17
3.2.5 Remote control memory channels...............................................................................17
3.2.6 SETUP functions.............................................................................................................17
3.2.7 Foot pedal control R11F................................................................................................18
3.3 Cooling unit operation MasterCool 10.........................................................................18
3.4 Storage .....................................................................................................................................18
4. MAINTENANCE..............................................................................................................18
4.1 Regular maintenance..........................................................................................................18
4.1.1 Every sixth months ........................................................................................................18
4.1.2 Service contract .............................................................................................................19
4.2 Troubleshooting ...................................................................................................................19
4.3 Disposal of the machine ....................................................................................................19
5. ORDERING NUMBERS .............................................................................................20
6. TECHNICAL DATA........................................................................................................22
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1. PREFACE
1.1 GENERAL
Congratulations on choosing the Master/MasterTig MLS™ 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
Kemppi Master MLS™ 2500 and 3500 is a MMA welding machine designed for industrial use
and for welding all kinds of covered electrodes, including dicult-to-weld types such as
cellulose electrodes. The equipment consists of power source, welding cables and function
panel.
Kemppi Mastertig MLS™ 3000 and 4000 is a TIG welding system especially designed for
industrial use and for welding e.g. stainless steel materials. The equipment consists of a power
source, function panel, TIG welding torch, ground cable and an optional cooling unit. The
cooling unit MasterCool 10 is used in water-cooled TIG welding.
The power source is a multifunctional machine for demanding professional use for MMA,
TIG and pulsed TIG welding with direct current. The power source is controlled with IGBT
transistors with a frequency of approximately 20 kHz, and the operational functions with a
microprocessor. The welding torch can be either water-cooled or gas-cooled.
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2. INSTALLATION
2.1 REMOVAL FROM PACKAGING
The equipment is packed in durable packages designed especially for it. However, it is
necessary to check the equipment before using it to make sure that the equipment or any part
of it has not got damaged during transportation. Also check that the delivery corresponds to
your order and that you have received all necessary instructions for installing and operating
the equipment. The packaging material is recyclable.
2.2 LOCATING THE MACHINE
Place the machine on a horizontal, stable and clean ground. Protect the machine from rain
and direct sunshine. Check that there is enough space for cooling air circulation in front of and
behind the machine.
2.3 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.
2.4 INSTALLATION
1
2
3
5
4
6
7
8
1. Function panel
2. Remote control connector
3. TIG torch control connector, not in MMA version
4. Shield gas and current connector for TIG torch, not in MMA version
5. (+) connector for electrode holder or earth cable, in TIG welding for earth cable
6. (-) connector for earth cable or electrode holder in MMA welding (stick welding)
Markings for (+/-) poles on the machine front are embossed.
Rear of machine
7. Mains switch
8. Snap connector for gas
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2.5 INSTALLATION OF THE PANEL
1. Fasten the cable connectors of the function panel to the power source (2 pieces).
2. Place the bottom edge of the panel behind the securing clips on the machine. Remove the
xing pin from the top edge with, for example, a screwdriver. Then gently push the
upper part of the panel into place. Make sure that the cables do not get damaged,
continue gently pushing the upper part of the panel until it clips into place. Finally, push
the xing pin back into its place.
2.6 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.
Master MLS™ 2500, MasterTig MLS™ 3000
This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc
is greater than or equal to 1.6 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 1.6 MVA.
Master MLS™ 3500, MasterTig MLS™ 4000
This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc
is greater than or equal to 2.5 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 2.5 MVA.
2.7 MAINS CONNECTION
NOTE! Only an authorised electrician is allowed to install mains cable and plug!
The power source is equipped with a 5-meter mains cable without plug. The fuse and cable
sizes are given in the Technical data at the end of this manual.
NOTE! This equipment’s electromagnetic compatibility (EMC) is designed for use in an industrial
environment. Class A equipment is not intended for use in residential location where the electrical
power is provided by the public low-voltage supply system.
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2.8 WELDING CABLE CONNECTIONS
2.8.1 Choosing welding polarity in MMA welding
You can change the welding polarity by choosing (+) or (-) cable connector.
2.8.2 Earthing
If possible, always fasten the earth clamp of return current cable directly onto work piece.
1. Clean contact surface of earth clamp from paint and rust.
2. Fasten clamp properly, so that contact surface is as large as possible.
3. Check that clamp is fastened rmly.
2.9 COOLING UNIT TO MASTERCOOL 10
NOTE! Cooling liquid is injurious! Avoid also contact with skin or eyes. In case of injury, seek for
medical advice.
Cooling unit MasterCool 10 together with TIG torch of Kemppi’s TTC-W range enables TIG
welding with water-cooled torch.
The cooling unit is installed beneath the power source with screws. Electrical connections are
on the bottom of power source. Fill the reservoir with a 20 - 40 % mixture of etanol and water,
or with any other suitable antifreeze. The capacity of the reservoir is 3 litres.
MasterCool 10:
Mastertig MLS 3000
Mastertig MLS 4000
Installation of cooling unit
1.
2.
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Installing gas-cooled torch
Installing water-cooled torch
Connect the red water hose to the upper connector and blue one to the lower connector..
2.10 SHIELD GAS
NOTE! Handle gas bottle with care. There is a risk for injury if gas bottle or bottle valve is damaged!
Use inert gases such as argon, helium or argon-helium mixture as shield gas for TIG welding.
Make sure that the gas ow regulator is suitable for the gas type used. The ow rate is set
according to the welding current, joint form and the size of the electrode. A suitable ow rate
is normally 8 – 10 l/min. If the gas ow is not suitable the welded joint will be porous. Spark
ignition becomes more dicult if the gas ow is too high. Contact your local Kemppi dealer
for choosing gas and equipment.
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2.10.1 Installation of gas bottle
E
B
D
G
AF
C
Parts of gas ow regulator
A. Gas bottle valve
B. Pressure regulation screw
C. Connecting nut
D. Hose spindle
E. Jacket nut
F. Gas bottle pressure meter
G. Gas hose pressure meter
NOTE! Always fasten gas bottle properly in vertical position in a special holder on the wall or on a
carriage. Remember to close gas bottle valve after having nished welding.
The following installation instructions are valid for most gas ow regulator types:
1. Step aside and open the bottle valve (A) for a while to blow out possible impurities from the
bottle valve. Note! Watch out for the gas ow.
2. Turn the press regulation screw (B) of the regulator until no spring pressure can be felt.
3. Close needle valve if there is one in the regulator.
4. Install the regulator on bottle valve and tighten connecting nut (C) with a wrench.
5. Install hose spindle (D) and jacket nut (E) into gas hose and tighten with hose clamp.
6. Connect one end of the hose with the regulator and the other end with the power source.
Tighten the jacket nut.
7. Open bottle valve slowly. Gas bottle pressure meter (F) shows the bottle pressure. Note! Do
not use the whole contents of the bottle. The bottle should be lled when the bottle
pressure is 2 bar.
8. Open needle valve if there is one in the regulator.
9. Turn regulationscrew(B)untilhosepressuremeter(G)showstherequiredow (orpressure).
When regulating ow amount, the power source should be switched on and the gun
switch pressed simultaneously.
Close bottle valve after having nished welding. If the machine will be out of use for a long
time, unscrew the pressure regulation screw.
3. OPERATION
NOTE! Welding in places presenting an immediate re or explosion hazard is forbidden!
Welding fumes may cause injury, take care of sucient ventilation during welding!
3.1 WELDING PROCESSES
3.1.1 MMA welding
MMA welding, as well as carbon arc gouging, is possible with all Master MLS and Mastertig
MLS power sources with all MLS panel versions when switched to MMA process.
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3.1.2 TIG welding
Mastertig MLS power sources are designed especially for TIG welding. They are equipped
with HF spark ignition and versatile panel functions depending on the panel used. The panels
predominantly for TIG welding are MTL, MTX, MTZ and MTM. Also the MEL and MEX panel on
Master MLS power source can be used for TIG welding with contact ignition.
3.1.3 Synergic Pulsed TIG welding (a)
(a)
(b)
MTX, MTZ and MTM panels include the synergic pulsed TIG process, in which you only need to
adjust the welding current while other pulse parameters are programmed. Pulsing frequency
is high, which guarantees concentrated arc and increased welding speed.
3.1.4 Long Pulsed TIG welding (b)
This method gives you the possibility to adjust all pulse parameters. Weld pool control is also
easier. Long pulsed TIG welding is included in MTX, MTZ and MTM panels.
3.2 OPERATION FUNCTIONS
3.2.1 Power source
NOTE! Always switch the machine on and o from main switch. Do not use the mains plug for
switching!
Never watch the arc without a proper face shield designed for arc welding! Protect yourself and the
surroundings against welding arc and hot spatters!
3.2.2 Function panels
Before welding starts, welding settings suitable for the work piece are chosen with the
function panel. See 3.1. Welding processes.
The Kemppi Multi Logic System, MLS™, allows you to select from dierent function panels
according to your welding application. MEL and MEX panels are designed for MMA welding.
MTL, MTX, MTZ and MTM panels are for TIG welding with basic functions, or with pulsed
TIG, 4T-LOG, or MINILOG control of welding current, or with memory channels. See also 3.1.
Welding processes.
Indicator lights
1 2 3
1. Power On
2. Thermal overload of power source
3. Wrong mains voltage, over or under-voltage
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MMA welding panel MEL
1.
2.
3.
4.
5.
6.
7.
8.
1. Remote/local control switch
2. Welding current potentiometer
3. Contact TIG welding
4. MMA welding
5. Arc force
6. Hot start
7. Digital display and amperage/voltage switch
8. Welding current table
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MMA welding panel MEX
1.
2.
6.
5.
7.
3.
4.
8.
9.
MEX panel is available separately. The functions of MEX panel are described in the operating
manual delivered with the panel.
1. Indicator lights: Main switch, overheating, wrong mains voltage
2. MODE button for welding method selection: MMA, contactTIG, carbon arc gouging, broken
arc
3. Selection of electrode type
4. Potentiometer for regulation of welding current and other parameters
5. Displays of welding current and other parameters (A, V, s, mm)
6. Selection of welding parameter to be regulated (arrow button to the left / to the right,
focusing (RETURN))
7. Figure indicating selection of welding parameter: HOT START, A, ARC FORCE
• Hot start regulation (HOT START)
• Welding current (A)
• Arc force control dynamics (ARC FORCE)
8. Selection of remote control / SETUP function
9. Memory functions
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TIG welding panel MTL – basic functions
2.
3.
4.
7.
5.
9.
6.
8.
14.
13.
12.
11.
10.
1.
1. Selection of MMA welding
2. Selection of arc force (MMA) and pedal low/high (minimum and maximum welding current)
displays and regulation (TIG welding)
3. Selection of hot start (MMA) and gas test (TIG welding)
4. Selection of TIG welding, 4T and 2T functions of torch switch
5. Selection of HF/contact and water ll function
6. Selection of panel, foot pedal and remote control
7. Selection of welding parameters
8. Adjustment of welding parameters
9. Pre-gas 0 – 10 s
10. Upslope 0 – 10 s
11. Welding current
12. Downslope 0 – 15 s
13. Post-gas 1 – 30 s
14. Return to welding current
1. MMA
Select MMA welding by pressing the selection button of MMA welding. The led is lit when
MMA is on.
2. Arc force
Press the arc force button and you will see the numerical value corresponding to the MMA
dynamics in the display. Factory setting for all electrode types is zero. You can change the
value by turning the pulse potentiometer. If numerical value is adjusted negative (-1...9) the
arc is softened, and the amount of spatter decreases when welding at the upper end of the
recommended current range of the electrode. On the positive side (1...9) the arc is rough.
In TIG mode, you can select the max. and min. current for the foot pedal (PEDAL LO/HI).
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3. Hot start
When pressing the hot start button, you will see on the display the numerical value
corresponding to the MMA hot start pulse. You can adjust the value by turning the
potentiometer. In TIG mode you can select gas test function.
4. TIG welding is selected
Welding torch switch 2 sequence function
Gas ow starts when the torch switch is pressed. After preset pre-gas time welding starts, and
current will rise to the welding level within the up-slope time. Release the torch switch, and
the current starts to drop, and after the selected down-slope time the arc is broken. After this,
the shield gas will ow for the time selected.
Welding torch switch 4 sequence function
Gas ow starts when the torch switch is pressed. Release the torch switch. The ignition spark
ignites the arc, and the current will rise to the welding level within the up-slope time. Press the
torch switch down, and the welding continues. Release the torch switch, and the current starts
to drop and after the selected down-slope time the arc is broken. After this, the shield gas will
ow for the time selected.
5. HF/contact ignition in TIG welding (water ll)
TIG arc can be started either with high frequency (HF) or without (contact ignition). HF
ignition is chosen by pressing the HF CONTACT button (5) to turn on the HF light.
If you use water-cooled torch you can ll it with water by pressing the HF CONTACT button for
more than 2 seconds.
6. Remote control
If you choose to adjust the welding current with a remote control unit you need to connect
the unit and select the REMOTE button. The panel led switches o and you can select the unit
(R10, wireless remote control R11T for MMA welding, or foot pedal control R11F). There is an
automatic recognition of remote control units with potentiometers and only the symbol of a
connected unit can be chosen. The foot pedal control works only in 2T mode.
7., 8. and 14. Adjustment of parameters
To select TIG welding parameters you only need to use two buttons: arrow-left and arrow-
right. Adjustment is done with the potentiometer. When pressing the RETURN button,
adjustment of parameters goes straight to welding current. The display shows automatically
numeric values and the units of the parameters. When you adjust the parameters, you can see
the value on the numerical display. After 10 seconds, the display will return to the welding
current.
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TIG welding panel MTX – pulsed TIG functions
1.
2.
3.
4.5.
6.
7.
8.
9.
1. 4T-LOG
2. Selection for spot, synergetic quick pulse and long pulse
3. Search arc 10 – 80 % of welding current
4. Pulse current 10 A – max.
5. Pulse ratio 10 – 70 % of pulse time
6. Frequency 0.2 – 300 Hz
7. Base current 10 – 70 % of pulse current
8. Spot time 0 – 10 slph
9. Tail arc 10 – 80 % of welding current
1. Welding torch switch 4T-LOG function (only MTX panel)
When torch switch is pressed current goes to search arc; after the switch is released current
goes to welding current within the upslope time. When the switch is pressed again, current
goes to downslope and then to the tail arc. Current stops when the switch is released.
2. Spot
Spot function is practical when welding a denite spot with TIG. It can be used both in 2T and
4T mode. Enter the spot time adjustment by pressing arrow button, and when the led is lit
you can choose the spot time needed by turning the pulse potentiometer.
Synergetic quick pulse
Press the PULSE button twice and the synergetic light turns on. Pulse parameters are
calculated automatically when average welding current is selected. Other pulse selections are
not necessary.
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Long pulse
Long pulse method gives you the possibility to adjust all pulse parameters (pulsing frequency,
pulse ratio, pulse current and pause current). You can also adjust the welding current, in which
case you receive a new pulse current value. Pulse ratio and pause current percentage remain
constant. When you adjust the pulse ratio, pulse current or pause current, the new average
welding current value is shown on the display.
TIG welding panel MTZ – pulsed TIG and MINILOG function
1.
2.
1. Minilog
2. Minilog 10 – 90 % of welding current
MTZ Minilog
When torch switch is pressed current goes to search arc; after the switch is released current
goes to welding current within the upslope time. With Minilog operation you can select from
two current levels: the welding current and the Minilog current. You can move from one to
the other by quickly pressing the torch switch. Press torch switch for 1 second, current goes to
downslope and then to the tail arc. Current stops when the switch is released.
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TIG welding panel MTM – pulsed TIG and MINILOG function with memory
1.
2. 3.
4.
5.
1. Minilog
2. Selection of memory function
3. Selection of channel in memory function
4. Minilog 10 – 90 % of welding current
5. SAVE
Minilog operation
When torch switch is pressed gas ow starts. When you release the switch current goes
to search arc. A quick press on the switch, and current goes to welding current within the
upslope time. After another short press it goes to Minilog operation, and you can select from
two current levels: the welding current and the Minilog current. You can move from one to the
other by quickly pressing the torch switch. Press the torch switch for 1 second, release it and
current goes to downslope.
3.2.3 Saving welding settings (MTM)
MTM panel has 10 memory channels for user settings. The selections are made in the MEMORY
eld. Not only welding parameters but also function selections can be saved in the memory.
MMA welding values can also be stored in memory channels. Proceed as follows:
1. Press MEMORY button twice and if the SET light starts blinking the channel is free. If the
channel is reserved the led will remain lit.
2. Select memory channel by pressing CH button.
3. Select the parameters and press SAVE button.
4. Press MEMORY button twice. ON led is lit.
5. Start welding and adjust settings if necessary.
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If the saved settings need to be adjusted the led has to be moved from ON to SET position in
order to select parameters. Press the SAVE button. It is also possible to save the currently used
parameters by pressing SET when the memory function is in OFF state (no lights on). Channel
is cleared if MEMORY and CH buttons are pressed simultaneously in SET mode.
3.2.4 Adopting the saved settings
1. Select MEMORY by pressing the button.
2. Select memory channel by pressing the CH button.
3. Start welding.
3.2.5 Remote control memory channels
Memory channels are selected by pressing simultaneously both REMOTE and CH button. With
the remote control you can retrieve saved settings on memory channels.
3.2.6 SETUP functions
A so called SETUP state is included for modifying panel functions. You can enter the SETUP
state by pressing the REMOTE (SETUP) button longer than normally. Exit is performed in the
same way. You can select the function (see list below) by pressing the arrow buttons and then
change the setting by turning the potentiometer.
Display Function Factory setting
A1 Upslope with constant time setting /
gradient (steepness) setting
0 constant time
A2 Downslope with constant time setting /
gradient (steepness) setting
0 constant time
A3 TIG antifreeze o / on 1 o
A4 MMA antifreeze o / on 1 on
A5 MMA hot start pulse non adaptive / adaptive 0 non adaptive
A6 Downslope cut o on / o 0 on
A7 MMA open circuit voltage 80V / 40V 0 80V
A8 2T downslope normal / cuts o by short switch action 0 normal
A9 Tacking automatics o / on 0 o
A10 Current at arc start steep / slightly sloped 0 steep.
A11 Downslope linear / non-linear 0 linear
A12 MMA/TIG method selection with remote control o /on 0 o
A13 Search arc o / on 1 on
A14 Possibility to current freezing during downslope o / on 0 o
A15 Control of channels with torch up-down switch o / on 0 o
A16 Control of current with torch up-down switch always active /
active only when selected with REMOTE button
0 always active
A17 Guard functions of cooling unit not activated / activated 1 activated
A18 Downslope for Minilog and 4T in MTM and MTL panels performed
during long switch action / after switch operation (normal)
0 normal
A19 Cooling unit operates on forced control / automatic on/o control 0 automatic
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3.2.7 Foot pedal control R11F
First read under ”3.2.2.4. TIG welding panel MTL” point ”6. Remote control” for installing the
remote control ready for operation. Foot pedal R11F is used in TIG welding, and its control
range is adjustable. The minimum value of control range is set with the panel potentiometer
when the pedal is not pressed, display shows ”LO”. Control range maximum is set similarly by
pressing rst the PEDAL LO/HI button on the panel, display shows ”HI”. Welding is started with
a light press on the pedal, the arc ignites to the set minimum current. Welding current goes
to maximum when the pedal is pressed to the bottom. The arc is broken when the pedal is
released. Adjust again if necessary.
3.3 COOLING UNIT OPERATION MASTERCOOL 10
The operation of cooling unit MasterCool 10 is controlled by the power source. The cooling
unit pump starts automatically when welding starts. Proceed as follows:
1. Start power source.
2. Check water level and input ow of the reservoir, add liquid if needed.
3. If you use a water-cooled torch you can ll it with water by pressing WATER FILL
(HF CONTACT) button for more than 2 seconds.
The pump operates for 5 another minutes after welding has been nished to cool the water to
the same temperature as in the machine surrounds. This reduces the need of service.
Thermal overload
The thermal overload light is lit, the machine stops and display shows COOLER when
temperature control of the machine has detected cooling water overheating. The cooling unit
fan cools down the water, and when the light goes out welding can be started again.
Water ow signal
Display shows COOLER when there is no pressure enough for water to ow.
3.4 STORAGE
The machine must be stored in a clean and dry room. Protect the machine from rain and direct
sunshine in places where temperature exceeds +25 °C.
4. MAINTENANCE
NOTE! Watch out for mains voltage when handling electric cables!
Degree and circumstances of machine utilisation should be taken into consideration when
planning product maintenance. Careful use and preventive maintenance help to avoid
unnecessary production disturbances and breaks. Check the condition of the welding and
connection cables daily. Do not use damaged cables.
4.1 REGULAR MAINTENANCE
4.1.1 Every sixth months
NOTE! Disconnect the plug of the machine from the mains socket and wait for ca. 2 minutes
(capacitor charge) before removing the casing plate.
The following maintenance operations should be carried out at least every sixth
months:
• Electric connections of the machine – clean any oxidised parts and tighten any loose
ones. NOTE! You must know the correct tension torques before you start repairing the
connections.
• Clean the inner parts of the machine from dust and dirt e.g. with a soft brush and a
vacuum cleaner. Do not use compressed air because there is the danger that the dirt
is packed even more tightly in the gaps of the cooling proles. Do not use a pressure
washer.
NOTE! Only an authorised electrician may repair the machine.
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Master, MasterTig, MasterCool 10 / © Kemppi Oy / 1112