Lincoln Electric SVM107-B service manual Troubleshooting Guide, Output Problems

Page 44

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

F-4

 

 

 

 

 

F-4

TROUBLESHOOTING & REPAIR

 

 

 

Observe Safety Guidelines

 

TROUBLESHOOTING GUIDE

detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

 

 

 

Major Physical or Electrical

1. Contact your local Lincoln

1. Contact The Lincoln Electric

Damage is Evident.

Authorized Field Service

 

Service Dept. 1-800-833-9353

 

Facility.

 

(WELD).

 

 

 

 

 

 

 

No weld output and no auxiliary

1. Check the brushes for wear and

1.

Perform the Rotor Voltage Test.

power. Engine runs normally.

proper contact to the rotor slip

2.

Check

for the

presence of

 

rings.

 

 

12VDC (at the pc board) from

 

 

 

 

 

 

lead #216 to frame ground. This

 

 

 

is the “flashing” voltage and is

 

 

 

present only when the Start,

 

 

 

Run, Stop switch S3 is in the

 

 

 

“Start” position. If the 12 VDC is

 

 

 

missing

check

the

leads,

 

 

 

switches and connections asso-

 

 

 

ciated with the lead #216. See

 

 

 

Wiring Diagram.

 

 

 

 

 

Check for the presence of 12

 

 

 

VDC (at the pc board) from lead

 

 

 

#224 to frame ground. This is

 

 

 

the supply voltage to the board

 

 

 

and is present when the engine

 

 

 

is running and the S3 switch is

 

 

 

in the “Run” position. If the

 

 

 

12VDC is missing check the

 

 

 

leads, switches and connec-

 

 

 

tions associated with the lead

 

 

 

#224. See Wiring Diagram.

 

 

3. If Rotor Voltage Test is normal,

 

 

 

then

preform

the

Rotor

 

 

 

Resistance Test.

 

 

 

 

4. If the Rotor Voltage Test is NOT

 

 

 

normal,

perform

the

Auxiliary

 

 

 

and Field Winding Voltage Test.

 

 

 

Then check the Field Diode

 

 

 

Bridge (D2) and the Field

 

 

 

Capacitor (C1). Replace if nec-

 

 

 

essary. If the Field Bridge and

 

 

 

Field Capacitor are good, then

 

 

 

the Printed Circuit Board may

 

 

 

be faulty. Replace.

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-800-833-9353 (WELD).

RANGER 8

Page 43 Page 45
Image 44
Page 43 Page 45
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 100 150 200 250 300 350 Output Amps 20 B50 100 150 200 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 TIG Welding Constant Current DC Semiautomatic Wire Feed Welding Constant VoltageAC/DC Stick 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 EngineTIG Constant Current Welding Wire Feed Welding Processes Constant VoltageStick 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 Materials Needed Rotor Voltage TestTest Description 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 High Idle no Load Output Control AT Maximum Scope SettingsNormal Open Circuit Voltage Waveform 115 VAC Supply 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
Top Page Image Contents