Lincoln Electric SVM107-B Field Capacitor AND/OR Rectifier Bridge Removal, Replacement

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F-48

F-48

TROUBLESHOOTING & REPAIR

FIELD CAPACITOR AND/OR RECTIFIER BRIDGE REMOVAL

AND REPLACEMENT (continued)

FIGURE F.11

RECTIFIER BRIDGE LOCATION AND DISCHARGING THE FIELD CAPACITOR

201
201A		7
	_	AC
		AC
		200
		200A
		200B
	+
9	AC
		7
	201
	201A
	9	200
		200A
	Field	200B
	Field
	Bridge	Jumper
	Rectifier	Jumper
	Rectifier
	Retaining
	Tab
	Cable Tie
	Capacitor

PROCEDURE

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1.Remove the engine spark plug wires.

2.With the 5/16” nut driver, remove the 6 sheet metal screws from the case top.

3.Remove the rubber gasket (cover seal) from the lift bail.

4Remove the fuel cap. The rubber gasket for the fill tube will come off with the case top.

5.Remove the case top, then reinstall the fuel cap.

6.With the 5/16” nut driver, remove the 5 screws holding the right case side.

7.Remove the right case side by lifting up and out.

8.Discharge the field capacitor by connecting the jumper wire clips on the black and the red wire terminals on the top of the capac- itor. See Figure F.11 for location. Leave the clips on for at least 5 seconds, then remove.

9.Both the capacitor and the rectifier bridge are mounted in a molded plastic holder. To remove it, pull out on the top of the holder, then slide it upward.

10.Cut the cable tie, and then snap the capacitor out of the assembly.

11.Loosen the two screws on the top of the capacitor. Lead 200 attaches to the posi- tive (+) terminal. Lead 201 attaches to the negative terminal (-) terminal.

12.To install the capacitor, reattach the leads to their respective terminals [200 to posi- tive (+); 201 to negative (-) ] and tighten the screws. Snap the capacitor back into the molded plastic holder and slide the holder back into position in the panel. Replace the cable tie.

13.Reinstall the case side, fuel cap, lift bail gasket, case top, and spark plug wires.

RANGER 8

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Contents Rangertm Safety Electric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Auxiliary Power Welding Output50 100 150 200 20 B50 100 150 200 250 300 350 Output Amps Installation Instructions Battery Connections OilAWG FuelAngle of Operation Connection of the LN-7 to the Ranger Welder OutputRanger Constant CurrentDuplex Receptacles Motor StartingElectrical Device USE with the Ranger Type Common Electrical Devices Possible ConcernsAuxiliary Power While Welding Standby Power ConnectionsConnection of Ranger 8 to Premises Wiring Figure A.1Ranger Table of Contents Operation Section AC/DC Stick Welding Constant Current DC Semiautomatic Wire Feed Welding Constant VoltageAC/DC TIG Welding Constant Current Control Switch Provides a fine welding current adjustment withinRange Switch settings in the STICK/TIG mode Welding voltage control with the Range switch setStarting/Shutdown Instructions Stopping the EngineStick Constant Current Welding Wire Feed Welding Processes Constant VoltageTIG Constant Current Welding Summary of Welding Processes Stick AutoSection C-1Section C-1 Accessories Recommended Equipment Ranger Table of Contents Maintenance Routine Maintenance Engine OIL ChangeEngine OIL Refill Capacities Kohler Onan HondaOIL Filter Change Engine Adjustments Engine Maintenance PartsPre-Cleaner Slip RingsFigure D.1 Major Component Locations Ranger Table of Contents Theory of Operation Section Theory of Operation Rotor Field Feedback and Auxiliary Power Weld WINDING, REACTOR, Range Switch Output BRIDGE, Choke Polarity SWITCH, and Output Terminals Ranger Table of Contents Trouble Shooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC board can be damaged by static electricity Static-SensitiveDevices Handle only atTroubleshooting Guide Output ProblemsObserve Safety Guidelines Detailed in the beginning of this manualTroubleshooting & Repair Troubleshooting & Repair Troubleshooting Guide Troubleshooting & Repair Engine Problems Troubleshooting & Repair Troubleshooting & Repair Welding Problems Ranger Test Description Rotor Voltage TestMaterials Needed Test Procedure Rotor Resistance Test Rotor Resistance Test Troubleshooting & Repair Ranger Auxiliary and Field Winding Test To test the 115 VAC winding To test the 230 VAC windingTo test the field winding Ranger Output Rectifier Bridge Test Output Rectifier Bridge Test Charging Circuit Test Charging Circuit Test Engine Throttle Adjustment Test Engine Throttle Adjustment Test Engine Throttle Adjustment Test Oscilloscope Method Normal Open Circuit Voltage Waveform 115 VAC Supply Scope SettingsHigh Idle no Load Output Control AT Maximum Typical DC Weld Output Waveform CV Mode Machine LoadedTypical DC Weld Output Waveform CC Mode Machine Loaded to 200 Amps AT 26 VDCTypical AC Weld Output Waveform Machine Loaded to 225 Amps AT 25 VDCAbnormal Open Circuit Weld Voltage Waveform CV Mode Abnormal Open Circuit DC Weld Voltage Waveform Normal Open Circuit Weld Voltage Waveform CV Mode Normal Open Circuit DC Weld Voltage Waveform CC Mode Normal Open Circuit AC Weld Voltage Waveform Ranger Brush Removal and Replacement DescriptionBrush Removal and Replacement ProcedureSlip Rings Figure F.10 Brush LEADS/BRUSHES Retained with Cable TIERanger Field Capacitor AND/OR Rectifier Bridge Removal Replacement Replacement Field Capacitor AND/OR Rectifier Bridge RemovalProcedure Rectifier Bridge Removal and Replacement Ranger Printed Circuit Board Removal Replacement Printed Circuit Board Removal and Replacement ProcedurePrinted Circuit Board Removal Ranger Output Rectifier Bridge Removal Replacement Remove the case top, then reinstall the fuel cap Output Rectifier Bridge RemovalSection TOC Ranger ENGINE/ROTOR Removal and Replacement InstructionsENGINE/ROTOR Removal Figure F.14 Component LOCATIONS, ENGINE/ROTOR RemovalEngine and Rotor Removal Procedure Rotor Removal Procedure Figure F.15 Engine and Rotor Removed from StatorReplacement KIT S20788 Reassembly ProcedureRetest After Repair Table of Contents Diagrams Section Dimension Dimension Print Ranger 8 Honda & Kohler RANGER8Diagrams Connection of Ranger 8 to LN-7 & K240 Contactor KITElectrical Diagrams Wiring Diagram Onan NON CSA ModelK1418-2 Ranger 8 Onan CSA Version Wiring Diagram Wiring Diagram Onan CSA ModelK1419-1 Ranger 8 Kohler Wiring Diagram Wiring Diagram Kohler NON CSA ModelK1419-2 Ranger 8 Kohler CSA Wiring Diagram Wiring Diagram Kohler CSA ModelK2160-1 Ranger 8 Honda CSA Wiring Diagram Schematic IDLER/CONTROL PC Board 16482PC Board Assembly IDLER/CONTROL SVM Error Reporting Form