No Gas Flows From The Torch - Cebora PLASMA PROF 162 Service Manual

CEBORA S.p.A.

3.3.5 - No gas flows from the torch.

PILOT ARC SOLENOID VALVE TEST.
Solenoid valve terminals (29), EL1 (terminals 7 – 8 of J12 control board (62), or EL2
q
(terminals 5 - 6 of J12 control board (62) = 27 VAC for two minutes (post-gas), with torch
button pressed. Selection of the solenoid valve depends on the type of torch inserted.
♦ Make sure there is gas at the intake fitting (I), and that the pressure and flow rates
in the intake conduit meet the values specified for the PROF 162 (see
specifications in the Sales Catalogue).
♦ Make sure that the pressure regulator (H) and pressure gauge (G) are working
properly; replace if defective.
♦ Make sure there are no occlusions in the gas hoses of the power source.
♦ Replace solenoid valve (29) EL1 or EL2.
♦ Check the wiring between connector J12 on board (62) and solenoid valves.
AC SERVICES POWER SUPPLY TEST.
Control board (62), connector J14, terminals 3 – 4 = 27 VAC.
q
♦ Check the wiring between connectors J14 on board (62) and J4 on board (8).
♦ Check fuse F5 on board (8); if broken, replace and make sure that terminals 3 - 4
of J14 on board (62) are not short-circuited. If so, replace board (62).
♦ Check the 27 VAC on terminals 0 – 27 of board (8); if missing, check the wiring
between the service transformer and board (8), or replace the service transformer
(8). If present replace the board (8).
♦ Replace board (62).
3.302.002
Correct?
NO
YES
Correct?
YES
NO
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03/08/00