Cebora 962 Plasma Prof 37 M User manual

Brand: Cebora

Model: 962 Plasma Prof 37 M

Type: User manual

CEBORA S.p.A. 1

POWER SOURCE art. 962

SERVICE MANUAL

3.302.230 02/05/2007

CEBORA S.p.A. 2

1 - GENERAL INFORMATION

1.1

- Introduction.

The purpose of this manual is to supply synthetic information referred the checks to carry out

in order to find the correct operation of the power transformer and AC capacitors connected to it,

relative to the Power Source art. 962 for plasma cutting systems.

1.2

- General service policy.

It is the responsibility of the customer and/or operator to use the equipment appropriately, in

accordance with the instructions in the Instruction Manual, as well as to maintain the equipment

and related accessories in good working condition, in compliance with the instructions provided

in the Service Manual.

Any internal inspection or repairs must be carried out by qualified personnel who are

responsible for any intervention on the equipment.

It is forbidden to attempt to repair damaged electronic boards or modules; replace them with

original Cebora spare parts.

1.3

- Safety information.

The safety notes provided in this manual are an integral part of those given in the Instruction

Manual. Therefore, before working on the machine, please read the paragraph on safety

instructions in the aforementioned manual.

Always disconnect the power cord from the mains, and wait for the internal capacitors to

discharge (1 minute) before accessing the interior of the equipment.

Some internal parts, such as terminals and dissipaters, may be connected to mains or

otherwise hazardous potentials. It is therefore forbidden to work with the safety guards removed

from the machine unless strictly necessary. In this case, take special precautions such as wearing

insulating gloves and footwear, and working in a perfectly dry environment with dry clothing.

2 - MAINTENANCE

WARNINGS

ANY INTERNAL INSPECTIONS OR REPAIRS MUST BE CARRIED OUT BY QUALIFIED

PERSONNEL.

BEFORE BEGINNING MAINTENANCE OPERATIONS, UNPLUG THE POWER SOURCE

FROM THE MAINS AND WAIT FOR THE INTERNAL CAPACITORS TO DISCHARGE (1

MINUTE).

3.302.230 02/05/2007

CEBORA S.p.A. 3

2.1

- AC capacitors voltage checks.

WARNING

FOR THE FOLLOWING TEST TAKE MAXIMUM PRECAUTIONS ESPECIALLY AT THE

MOMENT OF MANUAL ACTIVATION OF CONTACTOR TLP (32), BECAUSE YOU

MANUALLY SUPPLY THE POWER SOURCE POWER CIRCUIT, WHICH CAN BE IN

DEFECTIVE WORKING CONDITION (I.E. CONSIDER THE POSSIBILITY OF

EXPLOSION OF CAPACITORS (52) AND (53), OTHER THAN THE RISK OF

ELECTRICAL SHOCK FROM CONTACT WITH PARTS UNDER VOLTAGE).

CAPACITORS (52) AND (53) WITH OPEN CIRCUIT POWER SOURCE TEST.

 Terminals of transformer (38) = voltages according to the table, with open circuit power

source (no pilot arc), and contactor TLP (32) manually activated (push with a plastic stick

over the contactor mobile equipment, up to close its contacts).

Terminals of transformer (38) 1 - 2 2 - 3 3 - 1 4 - 5 5 - 6 6 - 4

Voltage 555 Vac 451 Vac 225 Vac 284 Vac 309 Vac 150 Vac

CAPACITORS (52) AND (53) WITH PILOT ARC TEST.

 Terminals of transformer (38) = voltages according to the table, with pilot arc on.

Terminals of transformer (38) 1 - 2 2 - 3 3 - 1 4 - 5 5 - 6 6 - 4

Voltage 345 Vac 360 Vac 217 Vac 130 Vac 170 Vac 144 Vac

CAPACITORS (52) AND (53) WHILE CUTTING TEST.

 Terminals of transformer (38) = voltages according to the table, with transfer arc.

Terminals of transformer (38) 1 - 2 2 - 3 3 - 1 4 - 5 5 - 6 6 - 4

Voltage 350 Vac 283 Vac 218 Vac 77 Vac 72 Vac 74 Vac

NOTE

The values shown in the table are merely indicative, with a rather broad tolerance, due to the

tolerances of the capacitors and how the transformer (38) is made.

Correct?

YES

♦ Check the wiring between the capacitors (52) and (53) and terminals 1 and 2 of

the primary circuit of the transformer (38), considering that every connection

other than the one shown in the diagram is to be considered mistaken, and may

cause further damage to the components of the power source.

♦ Make sure that the capacity of the capacitors is correct; (52) = 3 x 60 uF and (53)

= 1 x 30 uF, using a specifically designed instrument “RLC Bridge”, or, if not

available, replace the capacitors (52) and (53).

♦ Check the condition of the windings of transformer (38), especially making sure

that there are no signs of overheating or dents in the winding columns that may

lead to partial short-circuits in the turns. If necessary, replace the transformer (38).

♦ Regular operation.

3.302.230 02/05/2007

Art. 962

La richiesta di pezzi di ricambio deve indicare sempre: numero di arti-

colo, matricola e data di acquisto della macchina, posizione e quantità

del ricambio.

pos DESCRIZIONE DESCRIPTION

01 LATERALE SINISTRO LEFT SIDE PANEL

02 COPERCHIO COVER

03 COPERTURA GOMMA RUBBER MAT

04 CIRCUITO DI CONTROLLO CONTROL CIRCUIT

05 PIANO INTERMEDIO INSIDE BAFFLE

06 ELETTROVALVOLA SOLENOID VALVE

07 ELETTROVALVOLA SOLENOID VALVE

08 PRESSOSTATO PRESSURE SWITCH

09 FONDO BOTTOM

10 RIDUTTORE REGULATOR

11 MANOMETRO GAUGE

12 PROTEZIONE PROTECTION

13 PRESSACAVO STRAIN RELIEF

14 CAVO RETE POWER CORD

15 LATERALE DESTRO RIGHT SIDE PANEL

16 ASSALE AXLE

17 RUOTA FISSA FIXED WHEEL

18 TAPPO CAP

19 RUOTA PIROETTANTE SWIVELING CASTOR

20 PANNELLO ANTERIORE FRONT PANEL

21 PRESSACAVO STRAIN RELIEF

22 LAMPADA SPIA LIGHT

23 CORNICE FRAME

24 DISCO CAMBIATENSIONE LOCKING DISC

25 PORTA LAMPADA LAMP HOLDER

26 PORTA LAMPADA LAMP HOLDER

27 PORTA LAMPADA LAMP HOLDER

pos DESCRIZIONE DESCRIPTION

28 MANICO HANDLE

29 PANNELLO COMANDI COMP. COMPLETE CONTROL PANEL

30 SUPPORTO MORSETTIERA TERMINAL BOARD SUPPORT

31 MORSETTIERA TERMINAL BOARD

32 TELERUTTORE CONTACTOR

33 RADDRIZZATORE RECTIFIER

34 MOTORE MOTOR

35 SUPPORTO MOTORE MOTOR SUPPORT

36 RESISTENZA RESISTANCE

37 VENTOLA FAN

38 TRASFORMAT. DI POTENZA POWER TRANSFORMER

39 CONNESSIONE CONNECTION

40 COMMUTATORE SWITCH

41 CAVO TORCIA TORCH CABLE

42 IMPUGNATURA CON HANDGRIP WITH PUSHBUT

PULSANTE TON

43 ANELLO O.R. O.RING

44 DIFFUSORE DIFFUSER

45 CORPO TORCIA (TESTINA) TORCH BODY (HEAD)

46 ELETTRODO (CONF. DA 5 PZ.) ELECTRODE (PACK. 5 PCS.)

47 DIFFUSORE ISOLANTE SWIRL RING (PACK 2 PCS.)

(CONF. DA 2 PZ.)

48 UGELLO (CONF. DA 10 PZ.) NOZZLE ( PACK. 10 PCS.)

49 PORTAUGELLO NOZZLE HOLDER

50 TORCIA COMPLETA COMPLETE TORCHE

51 MORSETTO + CAVO SCREW KNOB + CABLE

52 CONDENSATORE CAPACITOR

When ordering spare parts please always state the machine item and

serial number and its purchase data, the spare part position and the

quantity.

Cebora 962 Plasma Prof 37 M User manual

Cebora 962 Plasma Prof 37 M User manual

Cebora 962 Plasma Prof 37 M User manual

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