CEBORA S.p.A. 2
CONTENTS
1 - GENERAL INFORMATION.....................................................................................................................3
1.1 - Introduction................................................................................................................................................3
1.2 - General service policy. .............................................................................................................................3
1.3 - Safety information.....................................................................................................................................3
1.4 - Electromagnetic compatibility.................................................................................................................3
2 - SYSTEM DESCRIPTION.......................................................................................................................... 4
2.1 - Introduction................................................................................................................................................4
2.2 - Technical specifications. ..........................................................................................................................4
2.3 - Description of power source art. 961...................................................................................................... 4
3 - MAINTENANCE......................................................................................................................................... 6
3.1 - Periodic inspection, cleaning...................................................................................................................6
3.2 - Operating sequence (fig. 3.2.1). ..............................................................................................................6
3.2.1 - Power source commands and signals...................................................................................................6
3.2.2 - Power source operation..........................................................................................................................7
3.3 - Troubleshooting.........................................................................................................................................8
3.3.1 - The power source does not start, lamp (22) off, fan (34) stopped...................................................8
3.3.2 - The start button produces no effect.................................................................................................... 10
3.3.3 - No gas flows from the torch................................................................................................................11
3.3.4 - Gas flows from the torch, the pilot arc does not light. ....................................................................12
3.3.5 - Irregular pilot arc starts, unstable pilot arc........................................................................................14
3.3.6 - Transfer arc does not take place or is too weak for cutting............................................................15
3.4 - Alarm signals. ..........................................................................................................................................16
3.4.1 - Lamp (G) (39) lit, with fix light = transformer (38) temperature above the limit.......................16
3.4.2 - Lamp (G) (39) flashing (one flash with one second pause) = arc voltage lower than working
minimum threshold.
.............................................................................................................................16
3.4.3 - Lamp (G) (39) flashing (two flashes with one second pause) = start button pressed during
power source start-up.
..........................................................................................................................17
3.4.4 - Lamp (L) (39) lit = low gas pressure.................................................................................................17
4 - COMPONENTS LIST............................................................................................................................... 18
4.1 - Power source art. 961 : see file ESP961.pdf enclosed at the end of the manual............................18
4.2 - Components table: see file ESP961.pdf enclosed at the end of the manual.................................... 18
4.3 - List of spare parts. ................................................................................................................................... 18
5 - ELECTRICAL DIAGRAMS....................................................................................................................19
5.1 - Power source art. 961 : see file SCHE961.pdf enclosed at the end of the manual. ....................... 19
5.2 - Waveforms. ..............................................................................................................................................19
5.2.1 - Power source output voltage, interrupted for missing pilot arc light on (par. 3.3.4)..................19
5.2.2 - Solenoid valve ELT (6) voltage supply, interrupted after 400 msec. approximately for missing
pilot arc light on (par. 3.3.4).
..............................................................................................................19
5.3 - Control board (4) code 5.602.146.........................................................................................................20
3.302.170 06/07/04
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