ESAB Caddyt Arc 150i Service Manual

0740 800 161 Valid for serial no. 316--xxx--xxxx to 620--xxx--xxxx061205

Caddyt Arc 150i
Caddyt Tig 150i
Origot Tig 150i

Service manual

S0740 800 161/E061205/P66

-- 2 --TOCe

Rights reserved to alter specifications without notice.

READ THIS FIRST 4.................................................................

INTRODUCTION 4...................................................................

TECHNICAL DAT A 5.................................................................

WIRING DIAGRAM 6.................................................................

Component description 6..........................................................

CaddyTig 150, CaddyArc 150, OrigoTig 150 8.......................................

DESCRIPTION OF OPERATION 10.....................................................

1AP1 Control panel 10..............................................................

CaddyArc 150 10...................................................................

CaddyTig 150 11....................................................................

OrigoTig 150 12.....................................................................

1AP2 Display board 12.............................................................

2AP1 Power supply board 14.......................................................

2AP1:1 Interference suppressor circuit 14............................................

2AP1:2 Primary circuit 14..........................................................

2AP1:3 Secondary circuit 15.......................................................

2AP1 Component positions 16....................................................

10AP1 TIG board 18................................................................

10AP1 Component positions 19....................................................

15AP1 Power board 20.............................................................

Charging circuit 20..................................................................

Supply to 2AP1 21..................................................................

Gate driver stages 21................................................................

Switching circuit 21..................................................................

15AP1 Component positions 22....................................................

15AP2 Secondary board 23.........................................................

15AP2 Component positions 23....................................................

20AP1 Control board 24............................................................

20AP1:1 Power supply 24...........................................................

20AP1:2 Control panel interface circuits 26............................................

LED display driver 27......................................................

Rotary encoder input 28....................................................

Push button filters 28.......................................................

20AP1:3 Remote control input 29....................................................

20AP1:4 Pulse width modulator 29...................................................

20AP1:5 Temperature monitoring 29..................................................

20AP1:6 Shunt and current control amplifier 30........................................

20AP1:7 Arc voltage monitoring 31...................................................

20AP1:8 TIG functions 31...........................................................

20AP1:9 Welding process control 32.................................................

Hot start MMA 32..........................................................

20AP1:10 Machine type configuration 33...............................................

20AP1 Component positions 34

....................................................

FAULT CODES 36....................................................................

Version 1 of circuit board 20AP1 36.................................................

Version 2 of circuit board 20AP1 37.................................................

SERVICE FUNCTIONS 38.............................................................

Version 1 of circuit board 20AP1 38.................................................

Version 2 of circuit board 20AP1 41.................................................

SERVICE INSTRUCTIONS 44..........................................................

What is ESD? 44...................................................................

Special tools 44....................................................................

Dismantling CaddyArc and CaddyTig 45.............................................

Soft starting 46....................................................................

Checking rectifier and freewheel diodes 48..........................................

Checking the gate pulses 49........................................................

Checking the semiconductor module 50.............................................

Mounting components on the heat sink 51...........................................

S0740 800 161/E061205/P66

-- 3 --TOCe

Rights reserved to alter specifications without notice.

INSTRUCTIONS 52...................................................................

SAFETY 52........................................................................

INSTALLATION 52..................................................................

CaddyArc 150 53.....................................................................

OPERATION 53....................................................................

Connections and control devices 53.................................................

Control panel 53...................................................................

Remote control unit 53.............................................................

Overheating protection 53..........................................................

MMA WELDING 54.................................................................

Settings 54........................................................................

Hidden functions 54................................................................

TIG WELDING 55...................................................................

MAINTENANCE 55.................................................................

Cleaning the dust filter 55..........................................................

CaddyTig 150 56.....................................................................

OPERATION 56....................................................................

Connections and control devices 56.................................................

Control panel 56...................................................................

Remote control unit 57.............................................................

Overheating protection 57..........................................................

TIG WELDING 57...................................................................

Settings 57........................................................................

Hidden TIG functions 59............................................................

MMA WELDING 60.................................................................

Settings 60........................................................................

Hidden MMA functions 60..........................................................

WELDING DATA MEMORY 61.......................................................

MAINTENANCE 61.................................................................

Cleaning the dust filter 61..........................................................

OrigoTig 150 62......................................................................

OPERATION 62....................................................................

Connections and control devices 62.................................................

Control panel 62...................................................................

Overheating protection 62..........................................................

TIG WELDING 63...................................................................

Settings 63........................................................................

MMA WELDING

64.................................................................

MAINTENANCE 64.................................................................

SPARE PARTS 64....................................................................

NOTES 65...........................................................................

S0740 800 161/E061205/P66

-- 4 --

ct27d1

READ THIS FIRST

Maintenance and repair work should be performed by an experienced person, and
electrical work only by a trained electrician. Use only recommended replacement parts.

This service manual is intended for use by technicians with electrical/electronic training for
help in connection with fault--tracing and repair.

Use the wiring diagram as a form of index for the description of operation. The circuit
board is divided into numbered blocks, which are described individually in more detail in
the description of operation. All component names in the wiring diagram are listed in the
component description.

This manual contains details of all design changes that have been made up to and
including November 2006.

The manual is valid for:
CaddyArc 150, CaddyTig 150 and OrigoTig 150 with serial no. 316--xxx--xxxx,
328--xxx--xxxx, 341--xxx--xxxx, 405--xxx--xxxx, 613--xxx--xxxx.
Caddyt Arc 150i, Caddyt Tig 150i and Origot Tig 150i with serial no. 620--xxx--xxxx.

The CaddyArc 150, CaddyTig 150, OrigoTig 150, Caddyt Arc 150i, Caddyt Tig 150i
and Origot Tig 150i are designed and tested in accordance with international and
European standards IEC/EN 60974.
On completion of service or repair work, it is the responsibility of the person(s)
performing the work to ensure that the product still complies with the requirements of
the above standard.

INTRODUCTION

The Power sources are renamed:

New name Old name

Caddyt Arc 150i CaddyArc 150
Caddyt Tig 150i CaddyTig 150
Origot Tig 150i OrigoTig 150

The power module of the power source is a single forward converter, operating at a
switching frequency of 65 kHz. IGBT transistors are used as the switching elements. All
power semiconductors are built into modules.

Schematic diagram of the power source

S0740 800 161/E061205/P66

-- 5 --

ct27d1

TECHNICAL DAT A

CaddyTig 150
CaddyArc 150

OrigoTig 150

Mains voltage 230 V ±10% 1∼ 50/60 Hz 230 V ±10% 1∼ 50/60 Hz
Fuse (delayed--action) 16 A 16 A
Primary current I

max

36 A 36 A

Primary current I

eff

21 A 21 A

Voltage/current range

(TIG)
(MMA)

3 A / 10 V --150 A / 16 V
4 A / 20 V --150 A / 26 V

3 A / 10 V --150 A / 16 V
4 A / 20 V --150 A / 26 V

Maximum permissible load at TIG

35% duty cycle
60% duty cycle

100% duty cycle

150 A / 16 V
120 A / 15 V

95 A / 14 V

150 A / 16 V
120 A / 15 V

95 A / 14 V

Maximum permissible load at MMA

25% duty cycle
35% duty cycle
60% duty cycle

100% duty cycle

150 A / 26 V
140 A / 25.

5 V

1 10 A / 24.

5 V

90 A / 23.

5 V

150 A / 26 V
140 A / 25.

5 V

1 10 A / 24.

5 V

90 A / 23.

5 V

Power factor at maximum current 0.62 0.62
Efficiency at maximum current 77 % 77 %
Open--circuit voltage 71 -- 78 V 71 -- 78 V
Open--circuit voltage Caddy Arc VRD 20 V --
Operating temperature -- 1 0 ˚C--+40˚C -- 1 0 ˚C till + 40˚C
Constant A-- weighed sound pressure <70 db <70 db
Dimensions, l x b x h 394 x 267 x 274 mm 380 x 180 x 300 mm
Weight CaddyTig 10 kg

CaddyArc 9 kg

9kg

Enclosure class IP 23C IP 23C
Application class

Duty cycle

The duty cycle refers to the time as a percentage of a ten--minute period that you can weld at a cer­tain load without overloading.

Enclosure class

The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP23 is designed for indoor and outdoor use.

Application class

The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.

S0740 800 161/E061205/P66

-- 6 --

ct27d1

WIRING DIAGRAM

The power source is based on a number of function modules. These are described in the
component descriptions on the following pages. Wire numbers and component names in
the wiring diagram show to which module each component belongs.

Wires/cables within modules are marked 100 -- 6999.
Circuit boards within each module have names such as 20AP1 -- 20AP99.

15 = module association, 1--69
AP = circuit board
1 = individual identification number, 0--99

Components within modules are named in a similar way.

WARNING !

STATIC ELECTRICITY can damage circuit
boards and electronic components.

S Observe precautions for handling electrostatic--

sensitive devices.

S Use proper static--proof bags and boxes.

ESD

Component description

1 MMC module.

1AP1 Control panel (MMC panel).

1AP2 Display board.

2 Mains module.

2AP1 Power supply board.

2L1 2 ferrite rings. The yellow/green cable must be wound two turns through the

ferrite rings.

2L2 Ferrite ring.

2QF1 Mains switch.

2XS1 Flat pin sockets. Important: to obtain a proper electric connection, the complete

cord set must be replaced if the sockets have to be replaced.

10 TIG module. Only CaddyTig 150 and OrigoTig 150.

10AP1 TIG board.

10TV1 HF transformer.

10YV1 Gas valve, 230 V AC.

S0740 800 161/E061205/P66

-- 7 --

ct27d1

15 Power module.

15AP1 Power board.

15AP2 Secondary board.

15C1 Smoothing capacitor, 1000 uF.

15D1 Diode module with rectifier and freewheel diodes.

15EV1 Fan.

15L1 Inductor.

15RS1 Shunt. 60 mV at 100 A.

15ST1 Thermal switch, fitted in the winding of main transformer 15TM1. See page 29.

15ST2 Thermal switch, fitted on the heat sink. See page 29.

15TM1 Main transformer.

20AP1 Controller circuit board.

29XS5 Remote control socket. Only CaddyArc 150 and CaddyTig 150.

S0740 800 161/E061205/P66

-- 8 --

ct27d1

CaddyTig 150, CaddyArc 150, OrigoTig 150

S0740 800 161/E061205/P66

-- 9 --

ct27d1

S0740 800 161/E061205/P66

-- 1 0 --

ct27d1

DESCRIPTION OF OPERATION

This description of operation describes the function of circuit boards and other components
in the power source. It is divided into sections, numbered to correspond to the circuit board
numbers and divisions into function blocks.

1AP1 Control panel

The control board processes the control signals to/from the control panel. See the
description on page 26.

When the machine is switched on, the LEDs of the control panel and the display segments
are tested by the software. The display then shows the machine type and software version.

Some of the LEDs of the control panel may gleam very weak when they are off, this is no
fault. An activated LED lights with a clear light.
The control panel LEDs and the display segments can be tested by service functions, see
pages 38 to 43.

CaddyArc 150

A

E

L

A1

A2

A3 A4

X1

D2

F

D1

D3 D4

K

A1

A2

A3

A4

1

8

7

5

6

D1

D2

D3

D4

4

Green LEDs, except D2 (yellow)

X1

GREEN LED

24

FEA

17

16

12

23

K L

21

22

Buttons

Control panel, CaddyArc 150

S0740 800 161/E061205/P66

-- 1 1 --

ct27d1

CaddyTig 150

A

B

C

D

E

H

G

K

J

L

A1

A2

A3

A5

A6

B1

A7

B2

B5

C1

C2

C3 C5

C6

C7

C4

D4 D5D3

D1

D2

B6 B7

F

X1

C1

C2

C3

C4

C5

C7

C6

B1

B2

B7

A1

A2

A3

A5

A7

A6

D1

D5

B6

B5

D4

D3

D2

4

3

2

1

11

10

9

8

7

5

6

Green LEDs, except D2 (yellow)

X1

GREEN LED

L24KJHGFEDCBA

22

21

20

19

18

17

16

15

14

13

12

23

Buttons

Control panel, CaddyTig 150

S0740 800 161/E061205/P66

-- 1 2 --

ct27d1

OrigoTig 150

A

C

D

E

A1

A2

A6 B1

B3

A7

B2

B4

B5

F

X1

2

1

11

10

9

8

7

5

6

B1

B2

B3

B4

A1

A2

A7

A6

B5

Green LEDs, except B5 (yellow)

X1

GREEN LED

24

FEDCBA

23

17

16

15

14

13

12

Buttons

Control panel, OrigoTig 150

1AP2 Display board

Component positions of the display board

S0740 800 161/E061205/P66

-- 1 3 --

ct27d1

Circuit diagram of the display board

The display segments can be tested by a service function, see pages 38 to 43.

S0740 800 161/E061205/P66

-- 1 4 --

ct27d_2

2AP1 Power supply board

The power supply board filters the mains voltage and generates internal supply voltages for
the machine.

2AP1:1 Interference suppressor circuit

WARNING! Dangerous voltage -- mains voltage.

The mains voltage is filtered by the power supply board. Power board 15AP1
rectifies the mains voltage. TIG board 10AP1 uses the mains voltage for
supply to the HF generator and the gas valve.

2AP1:2 Primary circuit

WARNING! Dangerous voltage -- mains voltage.

The primary circuit is supplied with 325 V DC from the power board, 15AP1.
S1 is a fuse with high rupturing capacity.

S0740 800 161/E061205/P66

-- 1 5 --

ct27d_2

Transistor Q5 is the switching element in a switched voltage supply. The
secondary voltage, +24 V, is sensed by IC2 and controlled by IC1.

The isolation voltage of transformer T1 and optocoupler IC3 is 4 kV.

2AP1:3 Secondary circuit

The secondary circuit delivers the following voltages:

+24 V

The voltage is controlled by IC1 on the primary side. It has a tolerance of
±0.6 V.

+5 V

The voltage is controlled by VR3. It has a tolerance of ±0.25 V.

-- 1 5 V

The voltage is controlled by VR2. It has a tolerance of ±0.75 V.

+13 VB

This voltage is unregulated. It has a tolerance of ±1.5 V.

Early warning power shut down

If the voltage goes low, output PS4 generates a warning signal to the
processor on circuit board 20AP1 (see page 24). Transistor Q6 switches off the
fan, 15EV1, at the same time.

S0740 800 161/E061205/P66

-- 1 6 --

ct27d_2

2AP1 Component positions

WARNING! Dangerous voltage -- mains voltage.

S0740 800 161/E061205/P66

-- 1 7 --

page

S0740 800 161/E061205/P66

-- 1 8 --

ct27d_10

10AP1 TIG board

WARNING! Dangerous voltage -- mains voltage.

The relay contacts, the gas valve 10YV1, the HF generator TR2 and the primary side of
transformer TR1 are connected to 230 V mains voltage.

Circuit diagram of the TIG functions of the CaddyTig and OrigoTig

The processor on circuit board 20AP1 controls the HF generator and gas valve. They can
be tested by service functions, see pages 38 to 43.

HF generator

When the welding torch switch is operated, and the open--circuit voltage is over 50 V, relay
RE2 closes and turns on the HF generator, TR2. It remains activated until the arc strikes, or
for a maximum of 0.7 seconds.

The voltage on the primary side of HF transformer 10TV1 is about 550 V. The secondary
voltage is about 11 kV if a 4 metre long welding torch is connected. If the welding torch is 16
metre long, the HF spark is about 8 kV.

Due to electromagnetic interference regulations, the energy in the HF ignition spark is
limited, and so the HF spark weakens with increasing length of the torch. The HF ignition is
satisfactory for welding torches up to 16 metres.

Gas valve

When the torch switch is operated, relay RE1 closes and energizes the gas valve.
When the torch switch is released and the gas post --flow time has elapsed, the gas valve is
deactivated.

TIG torch switch

The secondary windings of transformer TR1 and rectifier bridge D3--D6 produce 24 V DC.
This voltage energizes relay RE3 when the torch switch is closed.

The torch switch can be tested by a service function, see pages 38 to 43.

S0740 800 161/E061205/P66

-- 1 9 --

ct27d_10

10AP1 Component positions

WARNING! Dangerous voltage -- mains voltage.

S0740 800 161/E061205/P66

-- 2 0 --

ct27d_15

WARNING!
Dangerous voltage -- mains voltage.
Never make any measurements on this
board when the machine is connected to
the mains supply.

15AP1 Power board

The power module is a single forward converter, operating at a switching frequency of
65 kHz. IGBT transistors are used as the switching elements. See page 49 and 50 for
screen traces of waveforms and measurement instructions.

If the power board has failed, a replacement board must be mounted in accordance with the
instructions on page 51.

The power board carries the mains rectifier, the charging circuit, the switching circuit and the
gate circuit.
The mains rectifier and the switching transistors are integrated in a semiconductor module,
PM1, which is part of the power board.

Charging circuit

When the mains power supply is turned on, the rectified mains voltage charges smoothing
capacitor 15C1 via resistor R31. Thyristor TY1 short --circuits charge resistor R31 when the
machine is loaded. If TY1 did not conduct, resistor R31 would burn out when the power
source is on load.

S0740 800 161/E061205/P66

-- 2 1 --

ct27d_15

Supply to 2AP1

The board supplies power supply board 2AP1 with 325 V DC (pins F1 and F3, connector
15XS1).

Gate driver stag es

Transformer TR1 is a gate driver transformer for galvanic isolation of the drive circuits from
controller board 20AP1. Fuses S10 and S20 protect the gate driver circuit if the IGBT
transistors fail.

Switching circuit

The switching transistors are integrated in the semiconductor module. They are parallel-­connected three and three.

S0740 800 161/E061205/P66

-- 2 2 --

ct27d_15

15AP1 Component positions

Pin positions of the semiconductor module

S0740 800 161/E061205/P66

-- 2 3 --

ct27d_15

15AP2 Secondary board

The secondary board is fitted on the main transformer 15TM1, diode module 15D1 and
inductor 15L1.

Diode module 15D1 comprises two diodes, rectifier and freewheel diode. During the time
interval between two voltage pulses from transformer 15TM1, the freewheel diode maintain
the welding current from inductor 15L1.

If the diode module has failed, a replacement module must be fitted in accordance with the
instructions on page 51.

Inductor L1 forms an LC circuit with C3//C4 and D1 to reduce the risk of arc extinction at low
welding currents. When rectifier diode 15D1 conducts, the LC circuit charges up. The circuit
is capable of temporarily maintaining a high arc voltage at low current, thus reducing the
risk of arc extinction. Diode D1 prevents capacitor C3//C4 from going negative.

15AP2 Component positions

S0740 800 161/E061205/P66

-- 2 4 --

ct27d_20

20AP1 Control board

The processor on the control board monitors and controls the various functions of the power
source. It obtains information on welding data from the control panel.
If the circuit board is faulty, it must be replaced. Replacement circuit boards must be
configured, see page 33. After replacing the circuit board, soft--start the machine. See the
instructions on page 46.

From serial no. 613--xxx--xxxx version 2 of the control board is fitted to the machines. The
control boards are interchangeable up to and including serial no. 402--xxx--xxxx, from serial
number 613--xxx--xxxx version 2 of the control board must be used.

Note: There are jumpers on the board that must be moved to the replacement board. See
page 33 for version 1 of the board and page 35 for version 2.

20AP1:1 Power supply

Version 1 of the board has a battery backed RAM memory, version 2 uses a
flash memory.

+5 V supply and battery backup, version 1 of 20AP1

Power supply +5 V, circuit board version 1

IC8 and IC10 monitor the voltage of battery BA1. The nominal battery voltage
is 3 V. If it falls below 2.5 V, the display shows error message E06. Battery life
is about five years. The battery voltage can be tested by service function no.
23, see page 39.

The machine can also operate without the battery, but data stored in the
welding data memory, disappears when the mains voltage is switched off. At
power--up default values will be read into the memory.

A voltage of about 2.5 V is supplied to IC10, pin 9. If this voltage drops below
the threshold voltage of 1.3 V, pin 10 of IC10 goes low, providing the processor
with a low power supply voltage signal. The processor then generates a ”

” warning signal in the display and stores current data.

If the +5 V supply to pin 3 of IC10 drops below 4.65 V, pin 15 goes low and
inhibits the pulse width modulator. The processor receives a reset signal and
data in the RAM memory is protected by the backup battery power supply.

Pin 2 of IC10 supplies the RAM memory with power, both when the machine is
energised and when it is shut down.

S0740 800 161/E061205/P66

-- 2 5 --

ct27d_20

When power to the machine is turned off, the display also shows ” ”
to confirm that the processor has stored the current data.

+5 V and +2.

5 V, version 2 of 20AP1

+5 and 2.5 V power supply , circuit board version 2

IC6 monitors the 24 V voltage supply to the 5 V regulator on circuit board
2AP1. IC16 monitors the 5 and 2.

5 V supplies. Regulator VR4 supplies the

processor with +2.

5 V.

The voltage on terminal PS4 is normally about 24 V, when this drops below
20 V, pin 14 of IC6 goes low, providing the processor with a low power supply
voltage signal. The processor then stores current data and generates fault
code E4. When the 5 and 2.

5 V voltages are passing below their treshold

values, the processor receives a reset signal from IC16.

Fault code E4 is not displayed at normal power off

+15 V and +20 V

Voltage regulator VR2 produces an output voltage of +20 ±1.0 V, which
supplies the pulse width modulator output stage. The voltage can be tested by
a service function:
Circuit board version 1, see service function no. 24 on page 39.
Circuit board version 2, see service function no. 17 on page 42.

Potential divider R70/R75 supplies 2.6 V to the processor. This provides a
signal that the power supply is available.

Voltage regulator VR2 produces an output voltage of +15 V, and this, together
with the --15 V supply, powers the analogue circuits.

S0740 800 161/E061205/P66

-- 2 6 --

ct27d_20

-- 1 5 V

The --15 V power supply is monitored by the processor. The voltage can be
tested by a service function:
Circuit board version 1, see service function no. 25 on page 40.
Circuit board version 2, see service function no. 18 on page 42.

+10 VB

Voltage regulator VR3 produces a stabilised +10 V supply, which is used to
supply the remote control unit. This supply is referred to as +10 VB, and its
neutral point, 0 VB, is separated from the electronic neutral (0 V).
Potentiometer R56 is used to adjust the voltage.

20AP1:2 Cont rol panel interface circuits

All machine functions are set by the control panel. All processing of the control
signals is carried out by the control board.

The signals between 1AP1 and 20AP1 pass 1AP2, the displayboard

See pages 10 to 13 for component positions and circuit diagram of the display
board and the control panels.

S0740 800 161/E061205/P66

-- 2 7 --

ct27d_20

LED display driver

Version 1 of 20AP1

LED display driver, version 1 of 20AP1

The display window and the LEDs are driven by IC16, which is controlled by
the processor.

Version 2 of 20AP1

LED display driver, version 2 of 20AP1

The display window, the display LEDs and LEDs LED1 to LED3 are driven by
transistors Q2 and Q10--Q25, which are controlled by the processor.

S0740 800 161/E061205/P66

-- 2 8 --

ct27d_20

Rotary encoder input

The pulse generator on the control panel is supplied at +5 V. Pulses are
supplied from the pulse generator to connections MMC18 and MMC19 with a
90_ mutual phase displacement. The pulse generator generates pulses only
when its shaft is turned. Resistors R114 and R116 are pull--up resistors.

Push button filters

All pushbuttons are connected to 0 V, so that pressing any of them pulls down
the corresponding input (MMC22 -- MMC32) to 0 V. The signal is filtered by a
filter network and then applied to the processor.

S0740 800 161/E061205/P66

-- 2 9 --

ct27d_20

20AP1:3 Remote control input

If the remote control input is activated, but there is no reference signal, resistor
R54 holds the reference input low. This results in a welding current of 3 A for
TIG welding and 4 A for MMA welding. The remote control input can be tested
by a service function:
Circuit board version 1, see service function no. 22 on page 39.
Circuit board version 2, see service function no. 16 on page 42.

20AP1:4 Pulse width modulator

The pulse width modulator determines the frequency and pulse time of the
switching transistors’ control pulses. IC3 controls the pulse frequency, the
pulse time and inhibition of pulses.

The pulse frequency is 65 kHz +/-- 1kHz, with a maximum pulse width of 43 -­44 % of the cycle width. See page 49 for screen traces of waveforms and
measurement instructions.

Transistor Q5 controls the primary winding of the pulse transformer on circuit
board 15AP1.

20AP1:5 Temperature monitoring

Version 1 of circuit board 20AP1

The thermal overload switches, 15ST1 and 15ST2, are normally closed.
Terminal T2 of circuit board version 1 is at 10 V.
Terminal T2 of circuit board version 2 is at 0 V.

S0740 800 161/E061205/P66

-- 3 0 --

ct27d_20

Version 2 of circuit board 20AP1

15ST2, which is fitted on the heat sink, opens at 85 _C. 15ST1, which is fitted
in the winding of the main transformer, 15TM1, opens at 130 _C.

If either of the switches operates, the power source is stopped, a fault code is
displayed and the temperature indication LED on the control panel lights.
Circuit board version 1 displays fault code E13.
Circuit board version 2 displays fault code E06.

The power source cannot be restarted until it has cooled sufficiently for the
switch(es) to reclose.

The state of the thermal switches and the overload indication can be tested by
service functions, see pages 38 to 43.

Version 1 of circuit board 20 AP1: Sometimes the temperature indication LED
may gleam weak when it is off, this is no fault. When the LED is activated, it
lights with a clear light at the same time as the fault code is displayed.

20AP1:6 Shunt and current control amplifier

The shunt produces 60 mV at a welding current of 100 A. The shunt response
is linear to the welding current.

If the shunt is not connected to the circuit board, resistor R2 supplies about

1.4 to 1.9 V to the shunt input. This blocks the current control amplifier, i.e. the
machine does not deliver any welding current.

S0740 800 161/E061205/P66

-- 3 1 --

ct27d_20

20AP1:7 Arc voltage monitoring

This circuit measures and scales the arc voltage to a suitable level for the
processor. 64 V arc voltage produces a voltage signal at the cathode of diode
D13, 5.1 V at version 1 of the board and 5.0 V at version 2.

MMA

When the current exceeds 10 A during welding start, the no--load voltage
control is deactivated. When the arc voltage exceeds 52 V, welding stops and
the no --load voltage control is activated.

The no--load voltage control holds the open--circuit voltage at about 70 V.

Machines with VRD function, Voltage Reduction Device, have an open--circuit
voltage of about 20 V.

TIG

The no--load voltage control is inactive in the TIG welding mode. The
open-- circuit voltage is about 110 V. Arc voltages below 45 V are defined as
welding. Output voltage is produced only when TIG welding is in progress.

20AP1:8 TIG functions

Live TIG start, CaddyArc 150

This start method is used only by the CaddyArc 150.

S Select TIG. The machine generates an output voltage.
S Touch the electrode on to the workpiece. The machine produces a current

of about 6 A.

S Lift the electrode from the workpiece. The arc strikes and the current

increases to 30 A.

S When the arc voltage exceeds 8 V, the current increases / decreases to

the set current.

LiftArc TIG start

Output voltage is produced only when TIG welding is in progress.

S Touch the electrode on to the workpiece.
S Press the torch trigger. The machine produces a current of about 6 A.
S Lift the electrode from the workpiece. The arc strikes and the current

increases to 30 A.

S When the arc voltage exceeds 8 V, the current increases / decreases to

the set current.

HF TIG start

Output voltage is produced only when TIG welding is in progress. Arc voltages
below 45 V are defined as welding. See also: 10AP1 TIG board, on page 18.

S0740 800 161/E061205/P66

-- 3 2 --

ct27d_20

20AP1:9 Welding process control

The processor inputs are the set values of welding data and the arc voltage.
The processor also calculates a set value signal for welding current, and
supplies this to the current control amplifier.

The process regulator control principle

Hot start MMA

Time

Current

Peak current

Adjustable starting current

Set current

12

Starting current, MMA welding mode

1. Phase 1, fixed starting current depending on the set current.

2. Phase 2, hot start = adjustable starting current.

MMA normal welding mode

In the MMA normal welding mode, the welding current is briefly increased at
the start of welding. The peak current, phase 1 in the diagram above, is
engaged for 150 milliseconds.

Version 1 of circuit board 20 AP1: The peak current is twice the normal
welding current up to 80 A (i.e. twice the set value). If the set value is above
80 A, the peak current is the set value + 80 A, subject to a maximum of 230 A.

The hot start current, phase 2 above, is engaged for 600 milliseconds. It is set
in per cent of the set current, but does never exceed the peak current.

Version 2 of circuit board 20 AP1: The peak current is twice the normal
welding current up to 150 A (i.e. twice the set value), subject to a maximum of
207 A.

The hot start current, phase 2 above, is engaged for 1.5 seconds. It is set in
per cent of the set current, but does never exceed the peak current.

MMA drop welding mode

In the MMA drop welding mode, the peak current is three times the set value,
but the duration is shorter at only 50 ms.

S0740 800 161/E061205/P66

LED1 LED2 LED3

LEDs on circuit board 20AP1

-- 3 3 --

ct27d_20

The hot start current, phase 2 above, is engaged for 240 milliseconds. It is set
in per cent of the set current, but does never exceed the peak current.

20AP1:10 Machine type configuration

This circuit board is used for different machines, therefore it must be
configured.

Version 2 of circuit board 20 AP1: the board is configured by the software,
see service function 23 and 24 on page 43.

Version 1 of circuit board 20 AP1: the board is configured by jumpers on a
terminal, follow the instruction below.

1 3 5 7 9

OrigoTig 150 x x x x --

CaddyTig 150 -- x x x --

CaddyArc 150 -- -- x x --

OrigoTig 200 x x x -- --

CaddyTig 200 -- x x -- --

The jumpers on terminal JP must be set up for the machine type in which the
board is used. See the table above.

20AP1:11 Power--up starting sequ ence

The starting sequence on power--up is only
displayed by version 2 of circuit board
20AP1.

The circuit board displays the starting
sequence from power--up.
LED1 lights red. Then LED1, LED2 and
LED3 lights green.
When the board has been initiated, and the
power source is in the application program,
LED1 flashes continously with a green light.

S0740 800 161/E061205/P66

-- 3 4 --

ct27d_20

20AP1 Component positions

Component positions for version 1 of circuit board 20AP1

S0740 800 161/E061205/P66

-- 3 5 --

ct27d_20

Component positions for version 2 of circuit board 20AP1

S0740 800 161/E061205/P66

-- 3 6 --

ct27f1

FAULT CODES

Version 1 of circuit board 20AP1

Code Description

E01 Internal RAM fault

Action: Restart the machine. If the fault persists, replace circuit board 20AP1.

E02 External RAM fault

Action: Restart the machine, and then reset it. If the fault persists replace circuit board

20AP1.

E03 EPROM fault

Action: Restart the machine. If the fault persists, replace circuit board 20AP1.

E04 Battery--backed RAM fault

Action: Restart the machine. If the fault persists, replace circuit board 20AP1.

E05 Memory fault

Action: Restart the machine. If the fault persists, replace circuit board 20AP1.

E06 Low battery voltage, less than 2.5 V

Action: Replace the battery.

Reset by pressing any pushbutton.

E10 +20 V out of limits. Must be18.5 -- 21.5 V

Action: Check power supply board 2AP1.

Automatic reset when the fault is repaired.

E11 -- 15 V out of limits. Must be --13.0 – 16.0 V

Action: Check power supply board 2AP1.

Automatic reset when the fault is repaired.

E13 High temperature

Action: Check that the cooling fan works, and that the air inlet and cooling fins are clean.

Automatic reset when the power source has cooled down.

E14 Current servo fault

Automatic reset when the fault has cleared. May also be reset by pressing any pushbutton.

E99 Strapping fault on the control board

Action: Switch off the machine, strap the control board as shown in the strapping (jumper)

diagram on page 34.

S0740 800 161/E061205/P66

-- 3 7 --

ct27f1

Version 2 of circuit board 20AP1

Code Description

E04 5 V power supply too low

The unregulated power supply voltage (+24 V) is too low: the smoothing capacitors cannot
keep the voltage up enough for the processor to continue to operate. The processor stops all
normal activities, expecting to be shut down.

Action: Turn off the mains power supply to reset the unit. If the fault persists, check the
power supply to circuit board 20AP1.

E06 High temperature

The temperature monitoring circuit has operated. The power source is stopped, and cannot
be restarted until the circuit has reset. See also page 29.

Possible causes: Overloading, fan not working properly, cooling air inlets or outlets blocked
or obstructed or dirt on the heat exchanger.

E11 Current servo fault

Automatic reset when the fault has cleared. May also be reset by pressing any pushbutton.

E16 High no--load voltage, VRD error

The open circuit voltage is too high. See also page 31.

Action: Turn off the mains power supply to reset the unit. If the fault persists ...............

E19 Error in persistent memory

Action: Restart the machine. If the fault persists, replace circuit board 20AP1.

S0740 800 161/E061205/P66

-- 3 8 --

ct27f1

SERVICE FUNCTIONS

The control panel can acess a number of service functions. The service functions have
several applications over and above service and fault tracing: those that are of importance
for service and fault tracing are described here.

To access the service functions:

S Press the welding process selection key for more than five seconds. When the service

function mode is active, the upper half of the left digit of the display lights up

The digit to the right indicates the number of the present service function.

S Press the

Quit

key to leave the service functions.

Version 1 of circuit board 20AP1

CaddyTig, control keys for the service functions CaddyArc, control keys for the service functions

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

OrigoTig, control keys for the service functions

Function
no.

1 Reset welding data

Resets all welding data variables to the default values.
Press

Execute

2 Reset fault indication

Press

Execute

8 Activate HF generator

Press

Execute , the display shows “1”, the HF generator is inactive.

Press

Execute to activate the HF generator, the display shows “0”.

Press

Execute to deactivate the HF generator.

Press

Quit

to leave this function.

S0740 800 161/E061205/P66

Version 1 of circuit board 20AP1

-- 3 9 --

ct27f1

9 Activate gas valve

Press

Execute , the display shows “1”, the gas valve is inactive.

Press

Execute to activate the gas valve, the display shows “0”.

Press

Execute to deactivate the gas valve.

Press

Quit

to leave this function.

10 Activate the thermal overload indication LED

Press

Execute , the display shows “0”, the LED is off.

Press

Execute to turn on the LED, the display shows “1”.

Press

Execute to turn off the LED.

Press

Quit

to leave this function.

14 Deactivate the pulse width modulator

Press

Execute , the display shows “1”, the pulse width modulator is on.

Press

Execute to deactivate the pulse width modulator, the display shows “0”.

Press

Quit

to activate the pulse width modulator and to leave this function.

16 Show state of thermal switch input

Press

Execute to read the input. “0” = closed thermal overload switch; “1” = open switch.

Press

Execute for a new reading.

Press

Quit

to leave this function.

17 Show state of welding torch input

Press

Execute to read the input. “0” = open torch switch; “1” = closed torch switch.

Press

Execute for a new reading.

Press

Quit

to leave this function.

19 Activate current reference

Press

Execute to activate this function. Set desired current value. Note: there is no current limit.

Press

Execute to activate the current reference.

Press

Quit

twice to deactivate the current reference, and to leave the service functions.

20 Show arc voltage

Press

Execute to read the actual voltage. The display shows a value between 0 and 255,

scaling 0.25 V / unit. Voltages from 64 V and up are shown as 255.
Press

Execute for a new reading.

Press

Quit

to leave this function.

21 Show current response

Press

Execute to read the actual current. The display shows a value between 0 and 255,

scaling 1 A / unit.
Press

Execute for a new reading.

Press

Quit

to leave this function.

22 Show remote control

Press

Execute to read the actual setting. The display shows a value between 0 and 255,

scaling 0 = min. setting; 255 = max. setting.
Press

Execute for a new reading.

Press

Quit

to leave this function.

23 Show battery voltage

Press

Execute to read the actual voltage. The display must not show less than 127,

which corresponds to a battery voltage of 2.5 V .
Press

Execute for a new reading.

Press

Quit

to leave this function.

24 Show 20 V voltage

Press

Execute to read the actual voltage. The display must show 121 to 141,

which corresponds to 18.5 to 21.5 V.
Press

Execute for a new reading.

Press

Quit

to leave this function.

S0740 800 161/E061205/P66

Version 1 of circuit board 20AP1

-- 4 0 --

ct27f1

25 Show -- 15 V voltage

Press

Execute to read the actual voltage. The display must show 98 to 120,

which corresponds to --13.0 to --16.0 V .
Press

Execute for a new reading.

Press

Quit

to leave this function.

26 Activate max current reference

Press

Execute to display the maximum current reference.

Press

Execute to activate the current reference.

Press

Quit

twice to deactivate the current reference, and to leave the service functions.

30 LED test

Press

Execute to run a test of the control panel LEDs.

31 Display test

Press

Execute to run a test of the display segments.

32 Program version

Press

Execute to read the actual software version.

Press

Quit

to leave this function.

33 Machine type

Press

Execute to read the actual machine type, set by the strapping on circuit board 20AP1.

CaddyTig, control keys for the service functions CaddyArc, control keys for the service functions

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

OrigoTig, control keys for the service functions

S0740 800 161/E061205/P66

Available reset functions:

1 = General reset.
2 = Error log reset.
3 = Default parameter reset.
4 = Memory reset.

-- 4 1 --

ct27f1

Version 2 of circuit board 20AP1

CaddyTig, control keys for the service functions CaddyArc, control keys for the service functions

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Show

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

Show

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

Show

OrigoTig, control keys for the service functions

Function
no.

1 Show software version

Press

Execute to read the actual software version.

2 Reset

Press

Show to display the actual reset function.

Select reset function by turning the selection knob.
Press

Show and then Execute to reset the selected function.

Press

Quit

to leave this function.

S If you have performed general reset:

Turn Off and On the machine.
The display shows E19 U0, reset this by pushing any button.

5 Activate HF generator

Press

Execute , the display shows “1”, the HF generator is active.

Press

Execute to deactivate the HF generator, the display shows “0”.

Press

Quit

to leave this function.

6 Activate gas valve

Press

Execute , the display shows “1”, the gas valve is active.

Press

Execute to deactivate the gas valve, the display shows “0”.

Press

Quit

to leave this function.

7 Activate the thermal overload indication LED

Press Execute to turn on the LED
Press

Execute to turn off the LED.

Press

Quit

to leave this function.

S0740 800 161/E061205/P66

Version 2 of circuit board 20AP1

-- 4 2 --

ct27f1

9 Deactivate the no--load voltage control (idle control)

Press

Execute , the display shows “1”, the idle control is on.

Press

Execute to deactivate the idle control, the display shows “0”.

Press

Execute to activate the idle control.

Press

Quit

to leave this function, the idle control is then off.

Turn Off and On the machine to reset it to normal idle control.

10 Deactivate the pulse width modulator

Press

Execute , the display shows “1”, the pulse width modulator is on.

Press

Execute to deactivate the pulse width modulator, the display shows “0”.

Press

Quit

to leave this function.

11 Show state of thermal switch input

Press

Execute to read the input. “0” = closed thermal overload switch; “1” = open switch.

Press

Execute for a new reading.

Press

Quit

to leave this function.

12 Show state of welding torch input

Press

Execute to read the input. “0” = open torch switch; “1” = closed torch switch.

Press

Execute for a new reading.

Press

Quit

to leave this function.

14 Show arc voltage

Press

Execute to read the actual voltage. The display shows a value between 0 and 255,

scaling 0.25 V / unit. Voltages from 64 V and up are shown as 255.
Press

Execute for a new reading.

Press

Quit

to leave this function.

15 Show current response

Press

Execute to read the actual current. The display shows a value between 0 and 255,

scaling 1 A / unit.
Press

Execute for a new reading.

Press

Quit

to leave this function.

16 Show remote control

Press

Execute to read the actual setting. The display shows a value between 0 and 255,

scaling 0 = min. setting; 255 = max. setting.
Press

Quit

and then Execute for a new reading.

Press

Quit

to leave this function.

17 Show 20 V voltage

Press

Execute to read the actual voltage. The display must show 121 to 141,

which corresponds to 18.5 to 21.5 V.
Press

Execute for a new reading.

Press

Quit

to leave this function.

18 Show -- 15 V voltage

Press

Execute to read the actual voltage. The display must show 98 to 120,

which corresponds to --13.0 to --16.0 V .
Press

Execute for a new reading.

Press

Quit

to leave this function.

19 LED test

Press

Execute to run a test of the control panel LEDs.

When the test is executed, all LEDs except “power on” are off.
Turn Off and On the machine to reset it to normal function.

20 Display test

Press

Execute to run a test of the display segments.

When the test is executed, all segmentrs are off.
Turn Off and On the machine to reset it to normal function.

S0740 800 161/E061205/P66

Available MMC id:

12 = Origo Tig 150 / Origo Tig 200
13 = Caddy Arc 150
14 = Caddy Tig 150 / Caddy Tig 200
Note: Other id numbers than in this table will make
the board unusable.

Available power source id:

18 = Origo Tig 150 / Caddy Arc 150 / Caddy Tig 150
19 = Origo Tig 200 / Caddy Tig 200
Note: Other id numbers than in this table will make
the board unusable.

Version 2 of circuit board 20AP1

-- 4 3 --

ct27f1

21 Read / Set machine id for the MMC

Press

Show to display the actual id.

Select id by turning the selection knob.
Press

Show and then Execute to set the selected id.

Press

Quit

to leave this function.
Turn Off and On the machine.
The display shows E19 U0, reset this by pushing any button.
Access the service functions to confirm the configuration.

22 Read / Set machine id for the power source

Press

Show to display the actual id.

Select id by turning the selection knob.
Press

Show and then Execute to set the selected id.

Press

Quit

to leave this function.
Turn Off and On the machine.
The display shows E19 U0, reset this by pushing any button.
Access the service functions to confirm the configuration.

23 Read hardware id for the MMC

Press

Show to display the actual id.

3 = Origo Tig 150 / Origo Tig 200 / Caddy Arc 150 / Caddy Tig 150 / Caddy Tig 200
Do not change the hardware id.
Press

Quit

to leave this function.

24 Read hardware id for the power source

Press

Show to display the actual id.

3 = Origo Tig 150 / Origo Tig 200 / Caddy Arc 150 / Caddy Tig 150 / Caddy Tig 200
Do not change the hardware id.
Press

Quit

to leave this function.

CaddyTig, control keys for the service functions CaddyArc, control keys for the service functions

Select function
Set value

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Show

Quit

Keep depressed more
than 5 seconds to activate
the service functions

Execute

Select function
Set value

Show

Quit

Keep depressed more

than 5 seconds to activate

the service functions

Execute

Select function
Set value

Show

OrigoTig, control keys for the service functions

S0740 800 161/E061205/P66

-- 4 4 --

ct27f2

SERVICE INSTRUCTIONS

What is ESD?

A sudden transfer or discharge of static electricity from one object to another. ESD stands for
Electrostatic Discharge.

How does ESD damage occur?

ESD can cause damage to sensitive electrical components, but is not dangerous to people.
ESD damage occurs when an ungrounded person or object with a static charge comes into
contact with a component or assembly that is grounded. A rapid discharge can occur,
causing damage. This damage can take the form of immediate failure, but it is more likely
that system performance will be affected and the component will fail prematurely.

How do we prevent ESD damage?

ESD damage can be prevented by awareness. If static electricity is prevented from building
up on you or on anything at your work station, then there cannot be any static discharges.
Nonconductive materials (e.g. fabrics), or insulators (e.g. plastics) generate and hold static
charge, so you should not bring unnecessary nonconductive items into the work area.
It is obviously difficult to avoid all such items, so various means are used to drain off any
static discharge from persons to prevent the risk of ESD damage. This is done by simple
devices: wrist straps, connected to ground, and conductive shoes.

Work surfaces, carts and containers must be conductive and grounded. Use only antistatic
packaging materials. Overall, handling of ESD--sensitive devices should be minimized to
prevent damage.

WARNING !

STATIC ELECTRICITY can damage circuit
boards and electronic components.

S Observe precautions for handling electrostatic--

sensitive devices.

S Use proper static--proof bags and boxes.

ESD

Special tools

Torx key

Torx key no. T10 and T25

Soft--starting tool SST 1

The soft--starting tool SST 1 is made for the CaddyArc, CaddyTig, OrigoTig and OrigoArc. It
can be ordered from ESAB, ordering no. 0459 534 880.

The tool includes: Soft starting rectifier, cable set, voltage test board, gate pulse load and
shunt voltage resistor for the OrigoArc.

S0740 800 161/E061205/P66

-- 4 5 --

ct27f3dism

Dismantling CaddyArc and CaddyTig

S0740 800 161/E061205/P66

-- 4 6 --

ct27f4soft

Soft starting

We recommend soft starting of the machine after replacing control circuit board 20AP1,
power supply board 2AP1 and circuit boards or components in the power module. Soft
starting supplies the power module with a low voltage in order to avoid injury to persons or
damage to components.

It is a good idea to use soft starting when fault tracing.

Special equipment

To soft--start the machine you need soft--starting tool SST 1, this is described on page 44.

Instructions

1. Disconnect wires 1501, 1502, 1503 and 1504 from circuit boards 2AP1 and 15AP1.

Disconnections prior to soft starting

2. Connect the 230 V AC input of the SST 1 to terminals B1 and B2 on circuit board
2AP1.

3. Connect the 325 V DC output of the SST 1 to terminals F1 and F3 on circuit board
2AP1.

The SST 1 connected to 2AP1

4. Disconnect connector 20XS4 from terminal PS of power supply board 2AP1. Connect
the voltage test cable of the SST 1 to terminal PS of power supply board 2AP1.

5. Connect the power source to the mains and turn on the mains switch.

6. Verify the output voltages from 2AP1, all LEDs must light.
(OrigoArc: only the +24V LED must light).

7. Switch off the machine. Disconnect the voltage test cable and reconnect connector
20XS4 to terminal PS of circuit board 2AP1.

8. Disconnect connector 15XS3 (supply to the fan) from terminal E of circuit board 2AP1.
Connect the 24 V DC input of the SST1 to terminal E of circuit board 2AP1.

S0740 800 161/E061205/P66

-- 4 7 --

ct27f4soft

9. Connect the 24 V DC output of the SST 1 to terminals C1 and C2 of power board
15AP1.

Circuit connections and measuring points for soft starting

10. Switch on the machine and set it to MMA mode.

11. Check that the DC voltage across smoothing capacitor 15C1 is 22--24 V.

12. Check that the DC voltage at the welding terminals is 7--8 V.

13. If all the measurements are as described above, reconnect the wires to restore the
power source to normal operation mode and make a test weld.

S0740 800 161/E061205/P66

-- 4 8 --

ct27f4diode

Checking rectifier and freewheel diodes

1. Disconnect the machine from the mains.

2. Dismantle the housing of the machine.

3. Use a Torx key no. T25 to unscrew and remove five screws from circuit board 15AP2.
The screws are marked

on the picture below,

4. Bend out the circuit board so that it has no contact with the connections of the diode
module.

5. Use a multimeter in diode test position to measure the forward voltage drop of the two
diodes: see the picture below. The voltage drop must be 0.3 to 0.5 V.

6. If the diode module has to be replaced, follow the instructions on page 51.

Measuring points, circuit board 15AP2

Circuit diagram and measuring points, circuit board 15AP2

S0740 800 161/E061205/P66

-- 4 9 --

ct27f5gate

Checking the gate pulses

When checking the gate pulses, the machine can either be in soft--start mode or in normal
operation mode.

Special equipment

To measure the gate pulses, you need a gate pulse load. This is included in soft--starting
tool SST 1, which is described on page 44.

Instructions

1. Disconnect the machine from the mains.

2. Disconnect connector 20XS5 from terminal G on control board 20AP1.

3. Connect the gate pulse test cable of the SST 1 to terminal G on control board 20AP1.

Measuring connection for the gate pulses

4. Switch on the machine.

5. Connect an oscilloscope to the SST 1, with the probe to terminal G2 and the screen to
terminal G1.

6. Set the machine to MMA welding mode.

7. Measure the pulse frequency. It must be 65 kHz +/-- 1kHz.

8. Measure the duration of the negative pulse. It must be 41 -- 43 % of the cycle time,
measured at a voltage level of --10 V.

9. The waveform of the pulses must be as shown below.

Gate pulses from circuit board 20AP1

S0740 800 161/E061205/P66

-- 5 0 --

ct27f6semi

Checking the semiconductor module

Measuring points for the semiconductor module

Disconnect the machine from the mains and follow the instructions below.

Measurements 2 -- 5: Use a multimeter in diode test position to measure the diodes.
Measure with the positive and negative of the multimeter connected as shown in the picture
above. The main transformer must be connected to terminals T1 and T2.

1. Resistor R31 (and thyristor TY1 in parallel): measure the resistance of R31. It must be
12 ohm (on some boards the resistance of R31 is 6.8 or 10 ohm, which are also
approved values).

2. Diode P1D: measure between resistor R31 and terminal C, pin 1.
Diode P2D: measure between resistor R31 and terminal C, pin 2.
The forward voltage drop must be 0.4 to 0.6 V.

3. Diode N1D: measure between the negative of capacitor 15C1 and terminal C, pin 1.
Diode N2D: measure between the negative of capacitor 15C1 and terminal C, pin 2.
The forward voltage drop must be 0.4 to 0.6 V.

4. Diode D1 connected in parallel with D4: measure between the negative of capacitor
15C1 and terminal T2. The forward voltage drop must be 0.3 to 0.5 V.

5. Diode D2 connected in parallel with D3: measure between the positive of capacitor
15C1 and terminal T2. The forward voltage drop must be 0.3 to 0.5 V.

6. Transistors Q1.1, Q1.2 and Q1.3: measure the resistance between collector, R31, and
gate, pin 15 of the module. The resistance must be higher than 500 kohm.

7. Transistors Q2.1, Q2.2 and Q2.3: measure the resistance between collector, terminal
T2, and gate, pin 10 of the module. The resistance must be higher than 500 kohm.

IGBT transistors and
freewheel diodes

Rectifier diodes and thyristor

S0740 800 161/E061205/P66

-- 5 1 --

ct27a1heat

Mounting components on the heat sink

Thermal paste

Apply thermal conducting paste to the components before fitting them to the heat sink.
Start by cleaning the heat sink, and then apply a very thin, even layer of thermal paste to

the contact surfaces of the components. The purpose of the paste is to fill out any hollows
in the surfaces of the components and the heat sink. Those parts of the component and the
heat sink that are in true metallic contact may already have good thermal contact.

Mount the components as described below.

See the spare parts list for the order number for thermal paste. Use only the paste
recommended by us.

Fitting instructions

15AP1 Power board with semiconductor module

1. Clean the heat sink and apply thermal conducting paste to the
semiconductor module as described above.

2. Fit the board and tighten the screws to a torque of 2.5 Nm, and then further
tighten them to 4.5 Nm.

3. Tighten the screws that connect transformer 15TM1 and capacitor 15C1 to
circuit board 15AP1 to a torque of 4.5 Nm.

Warning: Incorrectly fitted components can cause failure. Do not tighten the
screws to more than 4.5 Nm.

Note: If capacitor 15C1 or transformer 15TM1 have to be replaced, the power
board must be removed and then refitted as described above.

15D1 Diode module

1. Clean the heat sink and apply thermal conducting paste to the diode
module as described above.

2. Fit the module and tighten the screws to a torque of 2.5 Nm, and then
further tighten them to 4.5 Nm.

3. Tighten the connections to circuit board 15AP2 to 4.5 Nm.

4. Tighten the screws that connect transformer 15TM1 and inductor 15L1 to
circuit board 15AP2 to a torque of 4.5 Nm.

15ST2 Thermal overload switch

1. Clean the heat sink and apply thermal conducting paste to the thermal
overload switch as described above.

2. Fit the thermal overload switch and tighten the screw to 2 Nm.

S0740 800 161/E061205/P66

-- 5 2 --

ct27ie1

INSTRUCTIONS

This chapter is an extract from the instructions for the CaddyArc 150, CaddyTig 150 and
OrigoTig 150.

SAFETY

WARNING!

Read and understand the instruction manual before installing
or operating.

INSTALLATION

The installation must be executed by a professional.

Placing

Place the power source so that its cooling air inlets and outlets are not obstructed.

Rating plate

The rating plate is located on the underside of the power source.

Mains power supply

Make sure that the welding power source is connected to the correct supply voltage and
that it is protected by the correct fuse rating. The standards for the country in question must
be complied with as regards the mains cable area. A protective earth connection must be
made in accordance with regulations.

Recommended fuse sizes and minimum cable areas

CaddyArc 150, CaddyTig 150, OrigoTig 150

Mains voltage 230 V ¦10 %, 1--phase
Mains frequency 50--60 Hz
Fuse (delayed--action)

100A 20% duty cycle
120A 35% duty cycle
150A 35% duty cycle

10 A
16 A
20 A*)

Mains cable, area 3x2.5mm

2

Welding cable, area 16 mm

2

*) Note:
The installed mains cable plug is approved for maximum 16 A.

North American version: the mains cable plug is approved for maximun 18 A.
The cable area and fuse rating above comply with Swedish regulations. Use the welding power source

in accordance with the relevant national regulations.

S0740 800 161/E061205/P66

CaddyArc 150

-- 5 3 --

ct27ie1

CaddyArc 150

OPERAT ION

General safety regulations for the handling of the equipment can be found on
page 52. Read through before you start using the equipment!

Connections and control devices

1. Main power supply switch

2. Mains cable

3. MMA: Return cable connection (--)
TIG: Welding cable connection (--)

4. Remote control connection

5. MMA: Welding cable connection (+)
TIG: Return cable connection (+)

6. Control panel

Control panel

The control panel comprises a display, setting knob, LEDs and pushbuttons. Using the
pushbuttons, it is possible to move between the various functions. The selected function is
indicated by the relevant LED lighting up.

1. Knob for setting data

2. Arc Force

3. Hot Start

4. TIG welding

5. MMA welding

6. Selection of current (A) or voltage (V)
indication during welding

7. Remote control unit On / Off

8. Indicating lamp, mains power supply on

9. Indicating lamp, overheating

Remote control unit

The remote control unit has to be connected to the remote control unit socket on the

machine. To activate the remote control, press the remote control symbol

This is
confirmed by the green LED lighting up. When the remote control unit is activated the
control panel is deactivated.

Overheating protection

The welding power unit has a thermal overload trip which operates if the temperature
becomes too high, interrupting the welding current and lighting a yellow indicating lamp on
the front of the power unit. The thermal overload trip resets automatically when the
temperature has fallen.

S0740 800 161/E061205/P66

CaddyArc 150

-- 5 4 --

ct27ie1

MMA WELDING

The CaddyArc 150 gives direct current, and you can weld most metals to alloy and
non--alloy steel, stainless steel and cast iron.The CaddyArc 150 allows you to weld most
coated electrodes from ∅ 1.6 to ∅ 3.25.

Settings

Function Setting range In steps of Default value

Current 4 -- 150 A 2A 100 A
Hot start 0--99 1 0
Arc force 0--99 1 5
Drop welding * On / Off -- Off
ArcPlust * On / Off -- On

*) Drop welding and ArcPlus are hidden functions, see the description below.

Hot start

Hot start increases the weld current for an adjustable time at the start of welding, thus
reducing the risk of poor fusion at the beginning of the joint.

Arc force

The Arc Force setting alters the machine’s dynamics. A softer/harder arc can be obtained.
The arc force is important in determining how the current changes in response to a change
in the arc length. A lower value gives a calmer arc with less spatter.

Hidden functions

The setting options for drop welding and ArcPlust, are obtained by pressing the

hot start

and arc force buttons simultaneously for at least 1 second.

The display then shows a letter and a number.

Function Settings Default setting
d = drop welding 0 =Off;1 =On 0
F = welding control ArcPlust 1 =Off;0 =On 0

Select function by pressing the arc force or hot start button.
Select setting with the setting knob.

Leave hidden functions by pressing the hot start and arc force buttons simultaneously for 1
second.

Drop weldin g

Drop welding can be used when welding with stainless electrodes. This technique involves
alternately striking and extinguishing the arc in order to achieve better control of the supply
of heat. The electrode needs only to be raised slightly to extinguish the arc.

Welding current control -- ArcPlust

The CaddyArc 150 is supplied with ArcPlust, a type of control that produces an intensive,
concentrated and calm arc. It recovers quickly after a drop short--circuit, which reduces the
risk of the electrode becoming stuck. In most welding applications the best result is
achieved if ArcPlustis On.

S0740 800 161/E061205/P66

CaddyArc 150

-- 5 5 --

ct27ie1

TIG W ELDING

Before using the Caddy for TIG welding it must be equipped with a TIG torch and gas valve,
a cylinder of argon, an argon regulator, tungsten electrodes and, if necessary, suitable filler
metal.

During TIG welding, the return cable must be connected to (+) and the TIG torch to ( --). If
they are connected in reverse, the tungsten electrode will melt.

“Live TIG start“

The “Live TIG start” function strikes the arc when the electrode is brought into contact with
the workpiece and then lifted away from it.

MAINTENANCE

Regular maintenance is important for safe, reliable operation.

Note!

All guarantee undertakings from the supplier cease to apply if the customer himself
attempts any work in the product during the guarantee period in order to rectify any faults.

Cleaning the dust filter

S Remove the fan grille.

S Release the dust filter.

S Blow the filter clean with compressed air (reduced pressure).

S Refit the fan grille with the dust filter.

Removing the filter

S0740 800 161/E061205/P66

CaddyTig 150

-- 5 6 --

ct27ie1

CaddyTig 150

OPERAT ION

General safety regulations for the handling of the equipment can be found on page 52.
Read through before you start using the equipment!

Connections and control devices

1. Control panel

2. TIG: Return cable connection (+)

MMA: Welding cable connection (+)

3. Remote control unit connection

4. MMA: Return cable connection (--)

5. TIG torch connection (--)

6. Connection for gas to the TIG torch

7. Connection for the TIG torch switch

8. Connection for gas from gas bottle

9. Mains cable

10. Main power supply switch

Control panel

The control panel comprises a display, setting knob, LEDs and pushbuttons. Using the
pushbuttons, it is possible to move between the various functions. The selected function is
indicated by the relevant LED lighting up.

1. Selection of current (A) or voltage (V)

indication during welding.

2. Indicating lamp, mains power supply On.

3. Remote control unit On / Off.

4. Indicating lamp, overheating.

5. Display.

6. Indication of the parameter that is shown in

the display, Ampere, Volt or seconds.

7. Knob for setting data.

8. Selection of TIG

or MMA

welding mode.

9. Selection of TIG DC or TIG pulse welding.

10. Selection of TIG HF start

or TIG LiftArc start .

1 1. Selection of TIG 2--stroke

or TIG 4--stroke control mode.

12. TIG welding parameter settings, see page 59.

13. Selection buttons for the TIG welding parameters, see page 59.

14. Selection buttons for the welding parameter memory, see page 61.

15. Change of parameter memory controlled by the TIG torch trigger, see page 61.

Note: if a remote control unit is activated, the parameter memory can not be controlled by the TIG
torch trigger.

S0740 800 161/E061205/P66

CaddyTig 150

-- 5 7 --

ct27ie1

Remote control unit

The remote control unit has to be connected to the remote control unit socket on the

machine. To activate the remote control, press the remote control symbol

This is
confirmed by the green LED lighting up. When the remote control unit is activated the
control panel is deactivated.

If pulsed current is chosen in TIG mode, it is the pulse current that is remotely controlled.

Note: if change of parameter memory by TIG torch trigger

is selected in TIG

mode, the remote control unit can not be activated in MMA mode nor in TIG mode.

Overheating protection

The welding power source has a thermal overload trip which operates if the temperature
becomes too high, interrupting the welding current and lighting a yellow indicating lamp on
the front of the power source. The thermal overload trip resets automatically when the
temperature has fallen.

TIG W ELDING

During TIG welding, the return cable must be connected to (+) and the TIG torch to ( --). If
they are connected in reverse, the tungsten electrode will melt.

Pulsing is used for improved control of the weld pool and the solidification process. The
pulse frequency is set so low that the weld pool has time to solidify at least partially between
each pulse. In order to set pulsing, four parameters are required: pulse time, background
time, pulse current and background current.

Settings

TIG without pulsing and TIG with pulsing

Function Setting range In steps of Default value

2/4 stroke * 2strokeor4stroke -- 2stroke
HF / LiftArct * HF or Liftarct -- LiftArct
Gas pre--flow time** 0--5s 0.1 s 0.5 s
Slope up time 0--10s 0.1 s 0.0 s
Slope down time 0--10s 0.1 s 1.0 s
Gas post--flow time 0--25s 0.1 s 2.0 s
Current 3 -- 150 A 1A 60 A

TIG with pulsing

Function Setting range In steps of Default value

Pulse time

Micro pulse**

0.01 -- 2.5 s

0.001 -- 0.250 s

0.01 s

0.001 s

1.0 s

Background time

Micro pulse**

0.01 -- 2.5 s

0.001 -- 0.250 s

0.01 s

0.001 s

1.0 s

Pulse current 3 -- 150 A 1A 60 A
Background current 3 -- 150 A 1A 20 A

*) These functions cannot be changed while welding is in progress.

**) Gas pre--flow time and micro pulse are hidden functions, see page 59.

S0740 800 161/E061205/P66

CaddyTig 150

-- 5 8 --

ct27ie1

2stroke

Functions when using 2 stroke control of the welding torch.

In the 2strokecontrol mode, pressing the trigger switch starts gas pre--flow (if used) and
strikes the arc (1). The current rises to the set value (as controlled by the slope up function,
if in operation). Releasing the trigger switch (2) reduces the current (or starts slope down if
in operation) and extinguishes the arc. Gas post--flow follows if it is in operation.

4stroke

Functions when using 4 stroke control of the welding torch.

In the 4strokecontrol mode, pressing the trigger switch starts gas pre--flow (if used) (1). At
the end of the gas pre--flow time, the current rises to the pilot level (a few ampere), and the
arc is struck. Releasing the trigger switch (2) increases the current to the set value (with
slope up, if in use). At the end of welding, the welder presses the trigger switch again (3),
which reduces the current to pilot level again (with slope down, if in use). Releasing the
switch again (4) extinguishes the arc and starts gas post-- flow.

HF

The HF function strikes the arc by means of a spark from the electrode to the workpiece.

LiftArct

The Lift Arct function strikes the arc when the electrode is brought into contact with the
workpiece and then lifted away from it.

Striking the arc with the LiftArc function. Step 1: the electrode is touched on to the workpiece. Step 2:
the trigger switch is pressed, and a low current starts to flow. Step 3: lift the electrode from the
workpiece: the arc strikes, and the current rises automatically to the set value.

S0740 800 161/E061205/P66

CaddyTig 150

-- 5 9 --

ct27ie1

Parameter settings

1. Slope up

2. Pulse current or continous current

3. Pulse time

4. Background current

5. Background time

6. Slope down

7. Gas post--flow time

Pulse and background time

The setting range for these parameters is normally 0.01 -- 2.5 seconds. However, by using
micro pulse, times down to 0.001 seconds can be set. When the micro pulse function is
active, times shorter than 0.25 seconds are displayed without a decimal point.

Micro pulse is a hidden function, to activate micro pulse, follow the description below.

TIG welding with pulsing.

Hidden TIG functions

The setting options for gas pre--flow time and micro pulse, are obtained by pressing the

arrow buttons,

and , simultaneously for at least 1 second.

The display then shows a letter and a number.

To select micro pulse, the machine must be in pulse welding mode.

Function Settings Default setting
A = gas pre--flow time 0 -- 5 s 0.5 s
b = micro pulse 0 =Off;1 =On 0

Select function by using the arrow buttons to step up and down.
Select setting with the setting knob.

Leave hidden functions by pressing the arrow buttons simultaneously for 1 second.

S0740 800 161/E061205/P66

CaddyTig 150

-- 6 0 --

ct27ie1

MMA WELDING

The CaddyTig 150 gives direct current, and you can weld most metals to alloy and
non-- alloy steel, stainless steel and cast iron. The CaddyTig 150 allows you to weld most
coated electrodes from ∅ 1.6 to ∅ 3.25.

Settings

Function Setting range In steps of Default value

Current 4 -- 150 A 2A 100 A
Hot start * 0--99 1 0
Arc force * 0--99 1 5
Drop welding * On / Off -- Off
ArcPlust * On / Off -- On

*) These functions are hidden functions, see the description below.

Hidden MMA functions

The setting options for hot start, arc force, drop welding and ArcPlus are obtained by

pressing the arrow buttons,

and , simultaneously for at least 1 second.

The display then shows a letter and a number.

Function Settings Default setting
C = arc force 0 -- 99 5
d = drop welding 0 =Off;1 =On 0
F = welding control ArcPlust 1 =Off;0 =On 0
H = hot start time 0 -- 99 0

Select function by using the arrow buttons to step up and down.
Select setting with the setting knob.

Leave hidden functions by pressing the arrow buttons simultaneously for 1 second.

Hot start

Hot start increases the weld current for an adjustable time at the start of welding, thus
reducing the risk of poor fusion at the beginning of the joint.

Arc force

The Arc Force setting alters the machine’s dynamics. A softer/harder arc can be obtained.
The arc force is important in determining how the current changes in response to a change
in the arc length. A lower value gives a calmer arc with less spatter.

Drop weldin g

Drop welding can be used when welding with stainless electrodes. This technique involves
alternately striking and extinguishing the arc in order to achieve better control of the supply
of heat. The electrode needs only to be raised slightly to extinguish the arc.

Welding current control -- ArcPlust

The CaddyTig 150 is supplied with ArcPlust, a type of control that produces an intensive,
concentrated and calm arc. It recovers quickly after a drop short--circuit, which reduces the
risk of the electrode becoming stuck. In most welding applications the best result is
achieved if ArcPlustis On.

S0740 800 161/E061205/P66

CaddyTig 150

-- 6 1 --

ct27ie1

WELDING DATA MEMORY

Four different sets of welding data parameters can be stored in the machine’s memory:
two for TIG welding and two for MMA welding.

Press button

or for 5 seconds to store the data in the memory. At the beginning

the green LED shines constantly, and then starts flashing when the data has been saved.

To switch between the predefined settings, press button

or

In the TIG mode, the data memory can also be changed by briefly pressing the torch switch,
irrespective of wether welding is in progress or not.

Press

to activate this function, activated function is indicated by the green LED.

Note: if change of parameter memory by the torch switch is activated, the remote control
unit can not be activated in MMA mode nor in TIG mode.

If four--stroke control mode has been selected, a brief depression of the torch switch will
change welding data memory. The same applies for two--stroke control mode if welding is
not in progress.

When welding with two--stroke control, welding data memory can be changed by briefly
releasing the welding torch switch.

The welding data memory is battery--backed, so that the settings remain even if the
machine has been switched off or disconnected from the mains.

MAINTENANCE

Regular maintenance is important for safe, reliable operation.

Note!

All guarantee undertakings from the supplier cease to apply if the customer himself
attempts any work in the product during the guarantee period in order to rectify any faults.

The CaddyTig 150 requires little maintenance. In normal cases, it is sufficient to blow it
clean using dry compressed air once a year, but this should be done more often if it is set
up in a dusty, dirty area.

Cleaning the dust filter

S Remove the fan grille.

S Release the dust filter.

S Blow the filter clean

with compressed air
(reduced pressure).

S Replace the fan grille

with the dust filter.

Removing the filter

S0740 800 161/E061205/P66

OrigoTig 150

-- 6 2 --

ct27ie1

OrigoTig 150

OPERAT ION

General safety regulations for the handling of the equipment can be found on
page 52. Read through before you start using the equipment!

Connections and control devices

1. Mains switch

2. Connection for gas from gas bottle

3. Mains cable

4. Connection for the TIG torch switch

5. Connection for gas to the TIG torch

6. TIG torch connection (--)

7. MMA: return cable connection (--)

8. TIG: return cable connection (+)

MMA: welding cable connection (+)

9. Control panel

Control panel

The control panel comprises a display, setting knob, LEDs and pushbuttons. Using the
pushbuttons, it is possible to move between the various functions. The selected function is
indicated by the relevant LED lighting up.

1. Indicating lamp, mains

power supply On.

2. Display.

3. Indicating lamp, overheating.

4. Knob for setting data.

5. Selection of TIG

or MMA

welding mode.

6. Selection of TIG HF start

or TIG

LiftArc start

.

7. Selection of TIG 2--stroke

or TIG 4--stroke control mode.

8. Slope--down time.

9. Gas post--flow time.

Overheating protection

The welding power source has a thermal overload trip which operates if the temperature
becomes too high, interrupting the welding current and lighting a yellow indicating lamp on
the front of the power source. The thermal overload trip resets automatically when the
temperature has fallen.

S0740 800 161/E061205/P66

OrigoTig 150

-- 6 3 --

ct27ie1

TIG W ELDING

During TIG welding, the return cable must be connected to (+) and the TIG torch to ( --). If
they are connected in reverse, the tungsten electrode will melt.

Settings

Function Setting range In steps of Default value

2/4 stroke 2strokeor4stroke -- 2stroke
HF / LiftArct HF or Liftarct -- LiftArct
Slope--down time 0--10s 0.1 s 1.0 s
Gas post--flow time 0--25s 0.1 s 2.0 s
Current 3 -- 150 A 1A 60 A

2stroke

Functions when using 2 stroke control of the welding torch.

In the 2strokecontrol mode, pressing the trigger switch starts gas pre--flow (if used) and
strikes the arc (1). The current rises to the set value (as controlled by the slope up function,
if in operation). Releasing the trigger switch (2) reduces the current (or starts slope down if
in operation) and extinguishes the arc. Gas post--flow follows if it is in operation.

4stroke

Functions when using 4 stroke control of the welding torch.

In the 4strokecontrol mode, pressing the trigger switch starts gas pre--flow (if used) (1). At
the end of the gas pre--flow time, the current rises to the pilot level (a few ampere), and the
arc is struck. Releasing the trigger switch (2) increases the current to the set value (with
slope up, if in use). At the end of welding, the welder presses the trigger switch again (3),
which reduces the current to pilot level again (with slope down, if in use). Releasing the
switch again (4) extinguishes the arc and starts gas post-- flow.

HF

The HF function strikes the arc by means of a spark from the electrode to the workpiece.

S0740 800 161/E061205/P66

OrigoTig 150

-- 6 4 --

ct27ie1

LiftArct

The Lift Arct function strikes the arc when the electrode is brought into contact with the
workpiece and then lifted away from it.

Striking the arc with the LiftArc function. Step 1: the electrode is touched on to the workpiece. Step 2:
the trigger switch is pressed, and a low current starts to flow. Step 3: lift the electrode from the
workpiece: the arc strikes, and the current rises automatically to the set value.

MMA WELDING

The OrigoTig 150 gives direct current, and you can weld most metals to alloy and non--alloy
steel, stainless steel and cast iron.The OrigoTig 150 allows you to weld most coated
electrodes from ∅ 1.6 to ∅ 3.25.

MAINTENANCE

Regular maintenance is important for safe, reliable operation.

Note!

All guarantee undertakings from the supplier cease to apply if the customer himself
attempts any work in the product during the guarantee period in order to rectify any faults.

The OrigoTig 150 requires little maintenance. In normal cases, it is sufficient to blow it clean
using dry compressed air once a year, but this should be done more often if it is set up in a
dusty, dirty area.

SPARE P ARTS

The spare parts lists are published in separate documents.

Product Filename

Caddy Arc 150i 0459 263 990

Caddy Tig 15

0i 0459 264 990

Origo Tig 150i 0459 262 990

S0740 800 161/E061205/P66

-- 6 5 --

notes

NOTES

ESAB AB
SE--695 81 LAXÅ
SWEDEN
Phone [phone]

www.esab.com

061127

ESAB subsidiaries and representative offices

Europe

AUSTRIA

ESAB Ges.m.b.H
Vienna--Liesing
Tel: [phone]
Fax: [phone]

BELGIUM

S.A. ESAB N.V.
Brussels
Tel: [phone]
Fax: [phone]

THE CZECH REPUBLIC

ESAB VAMBERK s.r.o.
Vamberk
Tel: [phone]
Fax: [phone]

DENMARK

Aktieselskabet ESAB
Herlev
Tel:[phone]
Fax:[phone]

FINLAND

ESAB Oy
Helsinki
Tel: [phone]
Fax: [phone]

FRANCE

ESAB France S.A.
Cergy Pontoise
Tel:[phone]
Fax:[phone]

GERMANY

ESAB GmbH
Solingen
Tel: [phone]
Fax: [phone]

GREAT BRITAIN

ESAB Group (UK) Ltd
Waltham Cross
Tel: [phone]
Fax: [phone]

ESAB Automation Ltd
Andover
Tel: [phone]
Fax: [phone]

HUNGARY

ESAB Kft
Budapest
Tel:[phone]
Fax:[phone]

ITALY

ESAB Saldatura S.p.A.
Mesero (Mi)
Tel:[phone]
Fax:[phone]

THE NETHERLANDS

ESAB Nederland B.V.
Utrecht
Tel: [phone]
Fax: [phone]

NORWAY

AS ESAB
Larvik
Tel:[phone]
Fax:[phone]

POLAND

ESAB Sp.zo.o.
Katowice
Tel: [phone]
Fax: [phone]

PORTUGAL

ESAB Lda
Lisbon
Tel: [phone]
Fax: [phone]

SLOVAKIA

ESAB Slovakia s.r.o.
Bratislava
Tel:[phone]
Fax:[phone]

SPAIN

ESAB Ibérica S.A.
Alcalá de Henares (MADRID)
Tel: [phone]
Fax: [phone]

SWEDEN

ESAB Sverige AB
Gothenburg
Tel:[phone]
Fax:[phone]

ESAB international AB
Gothenburg
Tel:[phone]
Fax:[phone]

SWITZERLAND

ESAB AG
Dietikon
Tel: [phone]
Fax: [phone]

North and South America

ARGENTINA

CONARCO
Buenos Aires
Tel: [phone]
Fax: [phone]

BRAZIL

ESAB S.A.
Contagem--MG
Tel: [phone]
Fax: [phone]

CANADA

ESAB Group Canada Inc.
Missisauga, Ontario
Tel: [phone]
Fax: [phone]

MEXICO

ESAB Mexico S.A.
Monterrey
Tel: [phone]
Fax: [phone]

USA

ESAB Welding & Cutting Products
Florence, SC
Tel: [phone]
Fax: [phone]

Asia/Pacific

CHINA

Shanghai ESAB A/P
Shanghai
Tel: [phone]
Fax: [phone]

INDIA

ESAB India Ltd
Calcutta
Tel: [phone]
Fax: [phone]

INDONESIA

P.T. ESABindo Pratama
Jakarta
Tel: [phone]
Fax: [phone]

JAPAN

ESAB Japan
Tokyo
Tel: [phone]
Fax:[phone]

MALAYSIA

ESAB (Malaysia) Snd Bhd
Selangor
Tel: [phone]
Fax:[phone]

SINGAPORE

ESAB Asia/Pacific Pte Ltd
Singapore
Tel:[phone]
Fax: [phone]

SOUTH KOREA

ESAB SeAH Corporation
Kyungnam
Tel: [phone]
Fax: [phone]

UNITED ARAB EMIRATES

ESAB Middle East FZE
Dubai
Tel: [phone]
Fax: [phone]

Representative offices

BULGARIA

ESAB Representative Office
Sofia
Tel/Fax: [phone]

EGYPT

ESAB Egypt
Dokki--Cairo
Tel: [phone]
Fax: [phone]

ROMANIA

ESAB Representative Office
Bucharest
Tel/Fax: [phone]

RUSSIA

LLC ESAB
Moscow
Tel: [phone]
Fax: [phone]

LLC ESAB
St Petersburg
Tel: [phone]
Fax: [phone]

Distributors

For addresses and phone
numbers to our distributors in
other countries, please visit our
home page

www.esab.com