Lincoln Electric Comprehensive Guide for Troubleshooting Your Portable Generator

Page 35

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-3

TROUBLESHOOTING & REPAIR

F-3

 

PC BOARD TROUBLESHOOTING PROCEDURES

 

 

WARNING

 

- Remove the PC board from the static-shielding bag

 

 

and place it directly into the equipment. Donʼt set the

 

ELECTRIC SHOCK

 

PC board on or near paper, plastic or cloth which

 

can kill.

could have a static charge. If the PC board canʼt be

Have an electrician install and

installed immediately, put it back in the static-shield-

ing bag.

 

 

service this equipment. Turn the

- If the PC board uses protective shorting jumpers,

 

input power OFF at the fuse box

 

before working on equipment. Do

donʼt remove them until installation is complete.

 

 

not touch electrically hot parts.

- If you return a PC board to The Lincoln Electric

 

CAUTION

Company for credit, it must be in the static-shielding

 

bag. This will prevent further damage and allow prop-

 

er failure analysis.

 

Sometimes machine failures appear to be due to PC

4. Test the machine to determine if the failure

board failures. These problems can sometimes be

symptom has been corrected by the

traced to poor electrical connections. To avoid prob-

replacement PC board.

 

lems when troubleshooting and replacing PC boards,

NOTE: It is desirable to have a spare (known good)

please use the following procedure:

1. Determine to the best of your technical ability

PC board available for PC board troubleshooting.

NOTE: Allow the machine to heat up so that all

that the PC board is the most likely component

causing the failure symptom.

electrical components can reach their operating

2. Check for loose connections at the PC board

temperature.

 

5. Remove the replacement PC board and

to assure that the PC board is properly

substitute it with the original PC board to

connected.

 

 

recreate the original problem.

 

3. If the problem persists, replace the suspect PC

a. If the original problem does not reappear by

board using standard practices to avoid static

substituting the original board, then the PC

electrical damage and electrical shock. Read

board was not the problem. Continue to look

the warning inside the static resistant bag and

for bad connections in the control wiring

perform the following procedures:

harness, junction blocks, and terminal strips.

PC board can be damaged by static electricity.

b. If the original problem is recreated by the

 

- Remove your bodyʼs static

substitution of the original board, then the PC

 

 

charge before opening the static-

board was the problem. Reinstall the

 

shielding bag. Wear an anti-static

replacement PC board and test the machine.

 

wrist strap. For safety, use a 1

6. Always indicate that this procedure was

ATTENTION

Meg ohm resistive cord connected

followed when warranty reports are to be

to a grounded part of the

submitted.

 

Static-Sensitive

equipment frame.

NOTE: Following this procedure and writing on the

Devices

- If you donʼt have a wrist strap,

Handle only at

touch an un-painted, grounded,

warranty report, “INSTALLED AND SWITCHED PC

Static-Safe

part of the equipment frame. Keep

BOARDS TO VERIFY PROBLEM,” will help avoid

Workstations

touching the frame to prevent

denial of legitimate PC board warranty claims.

 

 

static build-up. Be sure not to

 

 

 

touch any electrically live parts at

 

 

 

the same time.

 

 

- Tools which come in contact with the PC board must

 

 

be either conductive, anti-static or static-dissipative.

 

 

INVERTEC® V155-S

Image 35
Contents Invertec V155-S Electric Magnetic Fields SafetyFor Engine Fumes and Gases Electric Shock can kill ARC Rays can burnIii For ElectricallyTransformateur ET À Précautions DE SûretéPrécautions DE Sûreté Pour LES Machines À Souder ÀElectromagnetic Compatibility EMC L10093 3-1-96H Master Table of Contents for ALL Sections Table of Contents Installation Section Operating Temperature Range Storage Temperature Range InstallationTilting Safety PrecautionsInput Connections Select Suitable LocationEngine Driven Generator Input Power Connection230V Input 120V InputStick Welding Smaw Output ConnectionsTIG Welding Replacement Quick Disconnect Plug for Stick Electrode Cable Table of Contents Operation Section Welding Capability Safety InstructionsTheory of Operation General DescriptionOFF FeaturesControls and Operational FunctionRear Control Panel Auto Adaptive ARC ForceWith Stick Welding Table of Contents Accessories Section Cable Plugs Compatible Equipment AccessoriesTable of Contents Maintenance Section Thermal Protection MaintenanceInput Filter Capacitor Discharge Procedure Routine MaintenanceFigure D.1 Major Component Locations Major Component LocationsInvertec V155-S 1TABLE of CONTENTS-THEORY of Operation Section E-1 Figure E.2 General Description Figure E.3 Input Board Input BoardFigure E.4 Main Inverter Board Main Inverter BoardFigure E.5 Control Board Control BoardFigure E.6 Igbt Operation Insulated Gate Bipolar Transistor Igbt OperationMaximum Output Pulse Width ModulationMinimum Output Sec 31 m/sec 33 m/secInvertec V155-S 1TABLE of Contents Troubleshooting & Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock PC Board Troubleshooting ProceduresResistance Test Perform Inverter Board Voltage Test Machine has high welding Materials Needed 7TROUBLESHOOTING & REPAIRF-7Case Cover Removal Procedure Test DescriptionDisconnect power to the Invertec V155-S Procedure9TROUBLESHOOTING & REPAIRF-9 Input Filter Capacitor Discharge Procedure Figure F.4 Capacitor Discharge Locations 11TROUBLESHOOTING & REPAIRF-11Invertec V155-S Input Board Resistance Test 13TROUBLESHOOTING & REPAIRF-13DC+ Inverter Board Resistance Test 15TROUBLESHOOTING & REPAIRF-15Figure F.6 Inverter Board Test Points Inverter Board Resistance Test Invertec V155-S Input Board Voltage Test 19TROUBLESHOOTING & REPAIRF-19PWR 2white to PWR 1blue to PWR 4white to PWR 3blue to 20TROUBLESHOOTING & REPAIRF-20Figure F.9 Main Switch Plug Location 21TROUBLESHOOTING & REPAIRF-21Invertec V155-S Inverter Board Voltage Test 23TROUBLESHOOTING & REPAIRF-23Figure F.10 Plug JP1 Testpoints Input Board Removal and Replacement Procedure 25TROUBLESHOOTING & REPAIRF-25AC2 Inverter Board Removal and Replacement Procedure 27TROUBLESHOOTING & REPAIRF-27Perform the Case Cover Removal Procedure Figure F.13 Inverter Board Removal 29TROUBLESHOOTING & REPAIRF-29Invertec V155-S Control Board Removal and Replacement Procedure 31TROUBLESHOOTING & REPAIRF-31Figure F.14 Control Board Removal 32TROUBLESHOOTING & REPAIRF-32Recommended Meters for Machine Output Tests INPUT- Single Phase onlyRated Output OutputInvertec V155-S Table of Contents Diagram Section Electrical Diagrams Schematic Complete Machine Codes 11326 Electrical DiagramsAux Potenza Schematic Input PC BoardPC Board Assembly Input Board PTC Schematic Inverter PC Board Sheet #1FEED-FORWARD Schematic Inverter PC Board Sheet #2PC Board ASSEMBLY- Inverter Board Sheet # PC Board Assembly Inverter Board Sheet #2 U1A Schematic Control PC BoardSee Page 2 for more detailed component information PC Board Assembly Control Board page Sheet #1PC Board Assembly Control Board Sheet #2
Related manuals
Manual 4 pages 62.31 Kb