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WARNINGA fused line disconnect switch should be installed in theinput circuit to the welding machine. This would ensure a completeremoval of all electrical power when performing service.Before connecting input power cord verify input power requirements bychecking data plate on rear of unit. Do not connect if your input power voltageis different from the voltage indicated on the input specifi cation panel.Turn off all power at the disconnect.Remove the right lower panel, as viewed from front, and locate power blockat rear of unit.Determine input Voltage and MOVE both Voltage Links to match INPUTVOLTAGE on BOTH Terminal blocks "TB1" and "TB2", these need to be setthe same or damage WILL occur to the unit.Voltage Link- - - IMPORTANT - - -This unit has low and high power terminal blocks (TB1 & TB2)that must have the SAME jumper configuration.Put BOTH Voltage Links to same terminal block screws.SEE SAMPLE HOOK UP DIAGRAM BELOWFOR EXAMPLE OF VOLTAGE LINK PLACEMENT.CobraMig 260 Owner's Manual - Page 2
Route input cable through strain relief and connect to power block as shownin the diagram following. Tighten strain relief and replace side panel with allhardware removed.Machine GroundingBefore starting the installation, check with the local power company if thereis any question about whether your power supply is adequate for the voltage,amperes, phase, and frequency specifi ed on the welder nameplate. Also, besure the plannted installation will meet the U.S. National Electrical Code andlocal code requirements. This welder may be operated from a single phaseline or from one phase of a two or three phase line.The CobraMig 260 is supplied connected for 480 Volt input. If the welderis to be operated on another voltage, it must be reconnected according tothe instrucitons.WARNING:Make certain that the input power is electrically disconnected before removing thescrew on the reconnect panel access cover.A green wire in the input cable connects this contact to the frame of thewelder. This ensures proper grounding of the welder frame when the welderplug is inserted into the receptacle.Welding Torch ConnectionsWork CableConnect a work lead of suffi cient size and length (see table below) betweenthe proper output stud on the power source and the work. Be sure theconnection to the work makes tight metal to metal electrical contact. Poorwork lead connections can result in poor arc initiation, poor weld results andactivation of the ground lead protector.Work Lead LengthsCurrent 60% Up to 50ft. 10-100ft.Duty Cycle (15.2m) (15.2-30.4m)300A 0 (53mm) 0 (67mm)400A 00 (67mm) 00 (85mm)500A 00 (67mm) 00 (85mm)600A 000 (85mm) 000 (107mm)Control CableThe 7-Pin “W” Clocked connector screws onto the mating receptacle on thefront panel of the wire feeder. This provides all electrical signals (motorvoltage, potentiometer control & trigger) to and from the feeder to the torch.CobraMig 260 Owner's Manual - Page 3
Page 2 and 3: SAFETY CONSIDERATIONSELECTRIC ARC W
Page 4: momentarily with unprotected eyes (
Page 7: Section AInstallationTechnical Spec
Page 11 and 12: Coolant Connection (Water Cooled To
Page 13 and 14: WELD VOLTAGEThe weld voltage knob a
Page 15 and 16: PROCESS SETTINGSThe following table
Page 17 and 18: should bisect the 90 degree angle m
Page 23 and 24: Testing the FeederRelay K2 Operatio
Page 25 and 26: CobraMig 260 Owner's Manual - Page
Page 27 and 28: 2 FLOW CHART 2SYMPTOMF3 FUSE ON COB
Page 29 and 30: 4 FLOW CHART 4SYMPTOMCOBRA MAIN BOA
Page 31 and 32: 6 FLOW CHART 6SYMPTOMWIRE FEEDS AT
Page 33 and 34: 8 FLOW CHART 8SYMPTOMDISCONNECT FUS
Page 35 and 36: 10 FLOW CHART 10SYMPTOMNO WELD OUTP
Page 37 and 38: Section FAppendicesDiagrams/Parts L
Page 39 and 40: Multi-Tap CV 260001-3850No. Qty. P/
Page 41 and 42: Multi-Tap Bracket Assembly003-1586N
Page 43 and 44: Wire Feeder Assembly003-2131No. Qty
Page 45 and 46: Back Panel Assembly003-2130No. Qty.
Page 47 and 48: Heat Sink Assembly003-1774CNo. Qty.
Page 49 and 50: Control Panel Assembly003-1703No. Q
Page 51 and 52: 42 VAC Front Panel Assembly003-2110
Page 53 and 54: Slave Motor Assembly003-2078No. Qty
Page 55 and 56: CobraMig 260 Owner's Manual - Page
Page 57 and 58: J1910P10J29101112131415161718192021
Page 61 and 62:
LIMITED WARRANTYEffective March 1,
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