MK Products CobraMig 260 PS/Feeder - Manual (Page 29)

CobraMig 260 Owner's Manual - Page 23
FLOW CHART
NOTE :
When the Cobra I front panel power switch is on, 115VAC is sent to the coil of Transformer Relay
and 27 VAC is sent to Cobra I main board. When the torch is triggered, then K2 on Cobra I main
board is energized. This action transfer 115 VAC to the slave motor, brake solenoid and controlled
voltage to the torch motor.
TRANSFORMER RELAY VOLTAGES : When torch trigger is depressed
115 VAC COM (White), Pin A to 115 VAC HOT (Neu), Pin B = 115 VAC
27 VAC COM (Brown), Pin 7 to 27 VAC HOT (Orange), Pin 9 = 27 VAC
27 VAC COM (Yellow), Pin 4 to 27 VAC HOT (Blue), Pin 6 = 27 VAC
4 4
SYMPTOM
COBRA MAIN BOARD, F1 AND F3 FUSES ARE OK
BUT NO WIRE FEED AT TORCH AND FEEDER NOT OPERATING
PROBLEM AREA
K2 RELAY ON COBRA I MAIN BOARD,
TRANSFORMER RELAY OR TORCH MOUNTED MICRO SWITCH
NO
GO TO FLOW CHART #3
COBRA I MAIN BOARD,
F1 FUSE IS BLOWN
YES
TRANSFORMER RELAY IS
DEFECTIVE OR CABLE
ASSEMBLY MISWIRED (SEE
NOTE)
IS THE COBRA FRONT
L.E.D. POWER LIGHT ON ?
NO YES
UNPLUG TORCH AMPHENOL
FROM COBRA FRONT PANEL
COBRA I MAIN P.C. BOARD, K2 RELAY
IS INOPERATIVE OR LOOSE J2, J3
CONNECTORS ON MAIN BOARD
MICRO SWITCH IS DEFECTIVE
START
IS COBRA MAIN
BOARD F1 FUSE OK?
NO YES
JUMPER "E" AND "F" ON EITHER
OF THE COBRA FRONT PANEL
AMPHENOL CONNECTORS
IS WIRE FEEDING OK ?