Cebora PLASMA PROF 162 - Weak Transfer Arc that Shuts off as Soon as Cutting Begins; Post-Gas Does Not Take Place Upon Releasing the Start Button and after Cutting

CEBORA S.p.A. 21
3.302.002 03/08/00
Correct?
Correct?
3.3.10 - Weak transfer arc that shuts off as soon as cutting begins.
NOZZLE REMOTE SWITCH OPENING TEST.
q Resistor terminals (74) = 0 VDC, with transfer arc (> 25 VDC with pilot arc).
YES
NO
♦ Check voltage on the remote switch coil (18): if 0 VAC replace remote switch
(18); if 27 VAC replace board (62).
♦ See “Transfer arc reference test” and “Transfer arc solenoid valve test” par. 3.3.9.
3.3.11 - Post-gas does not take place upon releasing the start button and after cutting.
POST-GAS TEST.
q Solenoid valve terminals (29), EL1 (terminals 7 – 8 of J12 control board (62)), or EL2
(terminals 5 - 6 of J12 control board (62) = 27 VAC during pilot arc, transfer arc and post-
gas stages. Selection of the solenoid valve depends on the type of torch.
(EL3 = 27 VAC only during the transfer arc phase).
YES
NO
♦ Check the wiring between the solenoid valves (29) EL1, EL2 and EL3 and
connector J12 on board (62).
♦ Replace board (62).
♦ See “Pilot arc solenoid valve test” par. 3.3.5. and “Transfer arc solenoid valve test” par.
3.3.9..