Power Source Powered, No Gas Flows From The Torch; Power Source Powered, The Wire Feeder Motor Does Not Work - Cebora SOUND MIG 2035/M Pulse Service Manual

CEBORA S.p.A.

3.3.5 - Power source powered, no gas flows from the torch.

SOLENOID VALVE (12) TEST.
Solenoid valve (12) terminals = 27 Vdc with torch button pressed and as long as the button is
held down and the pre-gas and post-gas time set.
♦ Check for gas presence at the power supply fitting (T), and make sure that the
pressure and flow in the intake line comply with the values specified for the
SOUND MIG 2035/M Pulse.
♦ Make sure there are no occlusions in the gas hoses of the power source.
♦ With the power source off, check the resistance on solenoid valve (12) terminals =
56 ohm. If >Mohm (winding broken), replace the solenoid valve (12).
♦ Replace the solenoid valve (12).
♦ Check the wiring between terminals 5 and 6 of the connector J11 on control board (27) and
solenoid valve (12).
♦ Check the resistance on solenoid valve (12) terminals = 56 ohm. If 0 ohm (short-circuit),
replace solenoid valve (12) and control board (27).
♦ See CONTROL BOARD (27) POWER SUPPLY TEST, par. 3.3.1.
♦ Replace the control board (27).

3.3.6 - Power source powered, the wire feeder motor does not work.

WIRE FEEDER MOTOR TEST.
Control board (27), connector J13, terminals 1(+) and 2(-) = approximately +1,5 / +25 Vdc,
based on the program set, with start button pressed and adjustable by knob (B).
♦ Check the wiring between J13 control board (27) and wire feeder motor (401).
♦ With the power source off, temporarily disconnect the terminals of the wire feeder
motor (401) from the connector J13 control board (27), and make sure that the
resistance between the terminals of the motor left free = approximately 1 ohm
(motor winding resistance). If >Mohm (winding broken), replace wire feeder
motor (401).
♦ Make sure there are no mechanical impediments blocking the motor.
♦ Check the motor rotation direction; if wrong, reverse the wires on the terminals of
J13 on control board (27).
♦ Replace the wire feeder motor (401).
3.302.161
Correct?
NO
WITH TRADITIONAL TORCH
Correct?
NO
YES
YES
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24/03/2004