ESAB Heliarc 283i AC/DC User manual

Service manual
0464 523 010 GB 20160329 Valid for: 283i=S2733450468, 353i=S2733450508
Heliarc283i, Heliarc353i

TABLE OF CONTENTS
0464 523 010 © ESAB AB 2016
READ THIS FIRST................................................................................................ 3
INTRODUCTION................................................................................................... 4
Component positions ..........................................................................................4
FAULT FINDING ................................................................................................... 9
General information .............................................................................................9
Visual inspection................................................................................................10
Not enough power..............................................................................................10
One of the motor fans is not working ..............................................................10
No LEDs lit on the front panel........................................................................... 11
The over temperature LED is blinking ............................................................. 11
Fault indication "CC" when torch trigger is pushed.......................................12
Not possible to adjust current with the encoder.............................................13
Power source in TIG mode does not strike .....................................................15
The solenoid valve does not work....................................................................16
Welding in DC but not in AC .............................................................................16
Fault finding without power supply..................................................................16
Fault finding with power supply .......................................................................17
Fault finding indications....................................................................................19
SERVICE INSTRUCTIONS................................................................................. 20
What is ESD?...................................................................................................... 20
Calibration procedure........................................................................................20
Test EN 60974-4 .................................................................................................. 24
AT COMPLETION ............................................................................................... 26
After repair, inspection and test .......................................................................26
Visual inspection................................................................................................26
Functional test.................................................................................................... 27
Rights reserved to alter specifications without notice.

READ THIS FIRST
0464 523 010 -3- © ESAB AB 2016
READ THIS FIRST
Maintenance and repair work must be performed by an experienced person, and electrical
work only by a trained electrician. Use only recommended replacment parts.
Thie service manual is intended for use by technicians with electrical/electronic training or
help in connection with fualt-tracing and repair.
Use the wiring diagram as a form of index for the description of operation.
Use the spare parts list as a guide to where the components are located in the equipment.
The spare parts list is published as a separate document.
This manual contains details of design changes that have been made up to and uncluding
October 2013.
The manual is valid for: Heliarc® AC/DC 283i, Heliarc® AC/DC 353i
NOTE!
The unit is tested by ESAB in a general set-up. The responsibility for safety and
function, of the specific set-up, lies with the integrator.
The Heliarc283i and Heliarc353i are designed and tested in accordance with international
and European standards IEC/EN60974-1 and IEC/EN60974-10. On completion of service
or repair work, it is the responsibility of the person(s) doing the work to ensure that the
product still complies with the requirements of the above standards.
CAUTION!
Read and understand the instruction manual before
installing or operating.
WARNING!
Personnel working with the equipment must be aware of the fact that high voltage
is present in the equipment. Parts with high voltage are not accessible during
normal operation. If the cover is opened for mainenance or other reason, parts
connected to mains such as connection terminals may be exposed.
WARNING!
High voltage is accumulated in capacitors after power has been switched off.
Always wait at least five minutes after the power is switched off, before starting
any work with the power source.
CAUTION!
Electrostatic discharge (ESD). Sensitive components such as integrated circuits
may be damaged by static electricity.
CAUTION!
Use an approved antistatic wrist strap to avoid damage to sensitive components.
Use the original packaging during transportation and storage of sensitive
components.

INTRODUCTION
0464 523 010 -4- © ESAB AB 2016
INTRODUCTION
Component positions
Item Denomination Note
1 Power switch S1
2 Auxiliary transformer T AUX1
3 Fuse board FUB2
4 Primary inverter PCB10
5 Secondary inverter PCB11
6 Secondary inductance L2
7 AC/DC Converter PCB2
8 Remote control filter board PCB4

INTRODUCTION
0464 523 010 -5- © ESAB AB 2016
Item Denomination Note
1 EMC filter
2 Primary inductance L1
3 Fuse board FUB1
4 Primary inverter PCB1
5 Secondary inverter PCB9
6 Logic board PCB7
7 AC drive board PCB8
8 HF board spark gap PCB5
9 HF transformer PCB3
10 Torch trigger filter board PCB6
11 Gas valve