No Gas Flows From The Torch - Cebora PLASMA PROF 123 ACC Service Manual

CEBORA S.p.A.

3.3.5 - No gas flows from the torch.

PILOT ARC SOLENOID VALVE TEST.
Solenoid valve V01 (14) terminals = 27 Vac for 40 seconds (post-gas), with torch button
pressed.
♦ Check for presence of gas at the intake fitting (I) and make sure the pressure and
flow rate in the supply line meet specifications values of Plasma PROF 123 ACC
(see Instruction Manual and Sales Catalogue).
♦ Make sure there are no occlusions in the gas hoses of the Power Source or in the
flow reducer inserted on the solenoid valve V01 (14) body.
♦ Make sure the pressure regulator (L) is working properly; replace if defective.
♦ With Power Source off, temporarily disconnect J10 from control board (47) and
check the resistance on solenoid valve V01 (14) coil terminal. Correct value =
approximately 25 ohm. If >Mohm (circuit broken), replace the solenoid valve
V01 (14).
♦ Replace the solenoid valve V01 (14).
♦ Check the wiring between solenoid valve V01 (14) and terminals 1 and 8 of J10 control board
(47).
♦ With the Power Source off, temporarily disconnect J10 from the control board (47) and check
the resistance on solenoid valve V01 (14) coil terminals. Correct value = approximately 25
ohm. If 0 ohm (short-circuit), replace solenoid valve V01 (14) and control board (47).
♦ Check the supply voltage of the control board (47) taking special care for 27 Vac voltage
carrying out the CONTROL BOARD (47) POWER SUPPLY TEST of par. 3.3.1.
♦ Replace control board (47).
3.302.269
Correct?
NO
YES
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12/04/2012