Bravo MIG 110 - Power Source Powered, Regular Output Voltage, Wire Feeder Motor (40) Doesnt Work

CEBORA S.p.A. 7
3.302.140 21/05/03
Correct?
♦ Check the wiring between selectors (15), control board (41) B1 and B3 terminals,
and contactor (50) coil terminals.
♦ With power source off, make sure the resistance of the contactor (50) coil. If 0
ohm (shot-circuit) replace contactor (50) and control board (41).
♦ Replace the relay on the control board (41) with one of the same type, or replace
the control board (41).
♦ With power source off, make sure the resistance of the contactor (50) coil. If >Mohm (coil
interrupted) replace contactor (50).
♦ Check wiring between transformer (46) secondary winding, rectifier bridge (38), inductor
(46), contactor (50) and work cable (13).
♦ With the power source off and disconnected from the mains, check the efficiency of the
contacts of contactor (50), manually activating it, and make sure that the resistance on each
contact is approximately 0 ohm. If you find burnt contacts or interference in moving the parts,
replace the contactor (50).
♦ Check connections of the torch cable conductors with power source internal elements.
♦ Replace the complete torch (41).
♦ Replace inductor (46).
3.2.3 - Power source powered, regular output voltage, wire feeder motor (40) doesn’t
work.
WIRE FEEDER MOTOR (40) TEST.
q Wire feeder motor (40) terminals = voltages adjustable (with knob (D)) from maximum
values 18, 20, 22 or 25 Vdc approximately, (depending by selectors (15) positions), up the
minimum values equivalent to approximately 10% of such values, with start button pressed,
and with power source open circuit.
YES
NO
♦ Check the wiring between wire feeder motor (40), control board (41) terminal A2,
and rectifier bridge (38) negative terminal.
♦ Disconnect temporarily, with power source off, wire feeder motor (40) terminals
from control board (41) and from rectifier (38), and make sure resistance between
motor terminals left free. If 0 ohm (short-circuit) replace wire feeder motor (40)
and control board (41). If > Mohm (winding interrupted) replace wire feeder
motor (40).
♦ Replace control board (41).
♦ Make sure there are no mechanical impediments blocking the motor.
♦ Check the motor rotation direction; if wrong, reverse the wires on the motor (40) terminals.
♦ Make sure there are no partial occlusions in the wire sheath inside the torch cable, that
jeopardize the wire and motor movement.
♦ Replace the wire feeder motor (40) and/or control board (41).
M12179B, MB120A, WFW12179, 117-092, 83-363 (Mig 110)