MK Products CobraMig 260 PS/Feeder - Manual (Page 28)

CobraMig 260 Owner's Manual - Page 22
FLOW CHART
NOTE :
MOTOR CHECK
a. Remove the amphenol connector from the cabinet.
b. Using an OHM meter, check the resistance across pins "A" and "B" (motor leads)
on torch amphenol. The resistance across the motor should be between 5 and 10 ohms.
c. If an open circuit or short circuit condition exists, check the motor leads and motor
independently.
3 3
PROBLEM AREA
COBRA: MAIN BOARD OR TORCH MOTOR
SYMPTOM
COBRA: MAIN BOARD, F1 FUSE IS BLOWN
YES NO
UNPLUG TORCH AMPHENOL
FROM COBRA FRONT PANEL
NO
COBRA I MAIN P.C. BOARD IS
DEFECTIVE
MOTOR LEADS ARE SHORTED
OR MOTOR IS DEFECTIVE
YES
JUMPER "E" AND "F" ON EITHER
OF THE COBRA FRONT PANEL
AMPHENOL CONNECTORS
GO TO FLOW CHART #4
COBRA I MAIN BOARD, F1 AND
F3 ARE OK, BUT WIRE FEED
AND TORCH NOT OPERATIVE
START
IS COBRA MAIN
BOARD F1 FUSE OK?
IS COBRA MAIN
BOARD F1 FUSE OK?