Lincoln-electric INVERTEC SVM158-A Manuel d'utilisateur

SVM158-AApril, 2002Safety Depends on YouLincoln arc welding and cuttingequipment is designed and builtwith safety in mind. However,your overall safet

INSTALLATIONA-4 A-4V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Maste

NOTESF-50 F-50V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

CONTROL BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs pe

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Observe static precautions detailed in PCBoard Troubleshooting Procedures at thebeginning of this section.6. Using a flat head screwdriver remove th

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

DISPLAY BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs pe

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

TROUBLESHOOTING & REPAIRDISPLAY BOARD REMOVAL & REPLACEMENT (continued)F-57 F-57V350-PROReturn to Section TOC Return to Section TOC Return to

10. Remove plug J37 from the display board. See theWiring Diagram.11. Remove plug J3 originating from the controlboard located directly across from

MAIN SWITCH BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repair

INSTALLATIONA-5 A-5V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Maste

PROCEDURE1. Remove the input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wrap-around cover.3. Perform the Input Filter Cap

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

NOTESF-62 F-62V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

ADVANCED PROCESS PANELREMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized re

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

TROUBLESHOOTING & REPAIRF-65 F-65V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

TROUBLESHOOTING & REPAIRF-66 F-66V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

TROUBLESHOOTING & REPAIRF-67 F-67V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

NOTESF-68 F-68V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

REMOTE BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs per

NOTESA-6 A-6V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC R

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

10. Remove plug J37 from the display board. SeeWiring Diagram.11. Remove plugs J33, J333 and J331 from theremote board. 12. Using a flat head scre

SNUBBER BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs pe

PROCEDURE1. Remove input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wrap-around cover.3. Perform the Input Filter Capac

POWER BOARD REMOVAL AND REPLACEMENTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs perf

PROCEDURE1. Remove input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wrap-around cover.3. Perform the Input Filter Capac

5. Locate the three plug connections. J41, J42 andJ43. See figure F.35.6. Carefully remove the three plugs from the powerboard.7. Remove the th

NOTESF-78 F-78V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

TROUBLESHOOTING & REPAIRF-79 F-79V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

Section B-1 Section B-1V350-PROTABLE OF CONTENTS- OPERATION SECTION -Operation...

PROCEDURE1. Remove input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wraparound cover.3. Perform the Input Filter Capaci

9. Apply a thin coat of Penetrox A-13 heatsink com-pound to the point of contact between the inputrectifier and the mounting surface.10. Secure the

NOTESF-82 F-82V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

F-83 F-83V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

PROCEDURE1. Remove input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wrap-around cover.3. Perform the Input Filter Capac

8. Under the copper plate previously removed, thereis an allen bolt. Remove it using a 9/64” allenwrench. See Figure F.39.9. Using a 7/16” sock

NOTESF-86 F-86V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

F-87 F-87V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

PROCEDURE1. Remove input power to the V350-PRO.2. Using a 5/16” nut driver remove the case wrap-around cover.3. Perform the Input Filter Capaci

5. Label and remove the five leads connected to thereconnect panel. Pliers may be necessary.6. Label and remove the two leads connected to theCB2 c

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

11. The back of the machine may now gently bepulled away to gain access to the current trans-ducer. Note: The rear of the machine cannot beremoved c

21. Replace the current transducer.22. Replace the two 3/8” mounting nuts previouslyremoved.23. Reconnect plug #J90 to the current transducer.24.

TROUBLESHOOTING AND REPAIRRETEST AFTER REPAIRF-92 F-92V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCR

TROUBLESHOOTING AND REPAIRRETEST AFTER REPAIRF-93 F-93V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCR

TROUBLESHOOTING AND REPAIRRETEST AFTER REPAIRF-94 F-94V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCR

TROUBLESHOOTING AND REPAIRRETEST AFTER REPAIRF-95 F-95V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCR

TROUBLESHOOTING AND REPAIRRETEST AFTER REPAIRF-96 F-96V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCR

G-1ELECTRICAL DIAGRAMSG-1TABLE OF CONTENTS -ELECTRICAL DIAGRAMS SECTION-ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL DIAGRAMSG-2V350-PROWIRING DIAGRAM - INVERTEC V350-PRONOTES:N.A. 1. FOR MACHINES WITH RED, BLACK AND WHITE POWER CORDS FOR SINGLE P

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

OPERATIONB-3 B-3V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master T

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

ELECTRICAL DIAGRAMSG-7V350-PROSCHEMATIC - DIGITAL CONTROL PC BOARD #4G-7NOTE: This diagram is for reference only. It may not be accurate for all machi

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

ELECTRICAL DIAGRAMSG-9V350-PROSCHEMATIC - SWITCH PRINTED CIRCUIT BOARDG-9NOTE: This diagram is for reference only. It may not be accurate for all mach

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

OPERATIONB-4 B-4V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master T

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

ELECTRICAL DIAGRAMSG-17V350-PROSCHEMATIC-SPI REMOTE PRINTED CIRCUIT BOARDG-17NOTE: This diagram is for reference only. It may not be accurate for all

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

ELECTRICAL DIAGRAMSG-19V350-PROSCHEMATIC-SNUBBER PRINTED CIRCUIT BOARDS247616-2-2000G-19NOTE: This diagram is for reference only. It may not be accura

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your fa

SVM ERROR REPORTING FORMWe need to know if there are errors in our manuals. We also value any suggestions as toadditional tests or procedures that wo

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

OPERATIONB-6 B-6V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master T

B-7 B-7V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCiSAFETYiFOR ENGINEpowered equipment.1.a. Turn the engine off before

B-8 B-8V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return

B-9 B-9V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return

B-10 B-10V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

B-11 B-11V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

B-12 B-12V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

B-13 B-13V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

B-14 B-14V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

C-1 C-1V350-PROReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCTABLE OF CONTENTS- ACCESSORIES SECTION -Accessories.

ACCESSORIESC-2 C-2V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

ACCESSORIESC-3 C-3V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCiiSAFETYiiARC RAYS can burn.4.a. Use a shield with the proper filte

CONNECTION OF LINCOLN ELEC-TRIC WIRE FEEDERSCONNECTION OF THE LN-25 TO THEV350-PRO “ACROSS THE ARC” WITHOPTIONAL 6 PIN K441-1 REMOTE CON-TROL.1. Rem

CONNECTION OF THE LN-25 TO THEV350-PRO “ACROSS THE ARC” WITHOPTIONAL 6 PIN K857 REMOTE CON-TROL.1. Remove input power to the V350-PRO.2. Connect t

ACCESSORIESC-6 C-6V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

ACCESSORIESC-7 C-7V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

ACCESSORIESC-8 C-8V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

ACCESSORIESC-9 C-9V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

C-10 C-10V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

CONNECTION OF THE LN-10 TO THE V350-PRO USING THE K1505 CONTROLCABLE.NOTE: AN LN-10 CAN ONLY BE USED WITH A FAC-TORY OR “CE” VERSION OF THE V350-PRO.1

NOTESC-12 C-12V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

Section D-1 Section D-1V350-PROTABLE OF CONTENTS-MAINTENANCE-Maintenance ...

SAFETYiii iiiV350-PROReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCFOR ELECTRICALLYpowered equipment.8.a. Turn of

MAINTENANCED-2 D-2V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master

WARNINGWARNINGAVI SO DEPRECAUCIONATTENTION!!!!Lorem ipsum dolor sit amet consectetuer adipiscingLorem ipsum dolor sit amet consectetuer adipiscing eli

NOTESD-4 D-4V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC R

Section E-1 Section E-1V350-PROTheory of Operation ...

FIGURE E.2 – INPUT VOLTAGE AND PRECHARGERemote BoardModePanelDisplay PanelControl BoardChokePositiveOutputTe rminalNegativeOutputTe rminalTo Control

SWITCH BOARD & MAIN TRANSFORMERThere is one switch board in the Invertec V350-Pro.This board incorporates two pairs of input capacitors,two insula

THEORY OF OPERATIONE-4 E-4V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return t

OUTPUT RECTIFIER AND CHOKEThe output rectifier receives the AC output from themain transformer secondary and rectifies it to a DCvoltage level. Since

THERMAL PROTECTIONTwo normally closed (NC) thermostats protect themachine from excessive operating temperatures.These thermostats are wired in series

INSULATED GATE BIPOLARTRANSISTOR (IGBT) OPERATIONAn IGBT is a type of transistor. IGBT are semiconduc-tors well suited for high frequency switchin

SAFETYiv ivV350-PROReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCPRÉCAUTIONS DE SÛRETÉPour votre propre protectio

PULSE WIDTH MODULATIONThe term Pulse Width Modulation is used to describehow much time is devoted to conduction in the posi-tive and negative portio

V350-PROSection F-1 Section F-1Troubleshooting & Repair Section ...S

HOW TO USE TROUBLESHOOTING GUIDEService and repair should be performed by only Lincoln Electric Factory Trained Personnel.Unauthorized repairs perform

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

SERVICE FACILITYCORRECTIVEACTIONCORRECTIVEACTIONDESCRIPTION/DEFINITION3132Main transformer primary over currentCapacitor bank “A”(lower) is undervolta

MASTER TABLE OF CONTENTS FOR ALL SECTIONSv vV350-PROPageSafety...

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

NOTESF-14 F-14V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

WARNINGReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mast

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

MAIN SWITCH BOARD TESTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs performed on this

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

SectionA-1 Section A-1V350-PROReturn to Master TOC Return to Master TOC Return to Master TOC Return to Master TOCTABLE OF CONTENTS- INSTALLATION SECTI

NOTESF-20 F-20V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

TROUBLESHOOTING & REPAIRF-21 F-21V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

TEST PROCEDURE1. Remove input power to the V350-PROmachine.2. Using a 5/16” nut driver, remove the casewraparound cover.3. Perform the Capacitor D

TROUBLESHOOTING & REPAIRF-23 F-23V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

NOTESF-24 F-24V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

F-25 F-25V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Retu

TEST PROCEDURE1. Remove input power to the V350-PROmachine.2. Using a 5/16” nut driver, remove the casewraparound cover.3. Perform the Capacitor Di

TROUBLESHOOTING & REPAIRF-27 F-27V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

NOTESF-28 F-28V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

OUTPUT DIODE MODULES TESTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs performed on t

V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Mas

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

TROUBLESHOOTING & REPAIRF-31 F-31V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master T

TROUBLESHOOTING & REPAIROUTPUT DIODE MODULES TEST (continued)F-32 F-32V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Re

AUXILIARY TRANSFORMER TESTService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs performed on

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return to Master TOC

TROUBLESHOOTING & REPAIRAUXILIARY TRANSFORMER NO.1 TEST (continued)F-35 F-35V350-PROReturn to Section TOC Return to Section TOC Return to Section

NOTESF-36 F-36V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

TROUBLESHOOTING AND REPAIRF-37 F-37V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC

TROUBLESHOOTING AND REPAIRCURRENT TRANSDUCER TEST (continued)F-38 F-38V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return

TROUBLESHOOTING AND REPAIRCURRENT TRANSDUCER TEST (continued)F-39 F-39V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return

A-3 A-3V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC Return

NOTESF-40 F-40V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

TROUBLESHOOTING AND REPAIRF-41 F-41V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC

TROUBLESHOOTING AND REPAIRFAN CONTROL AND MOTOR TEST (continued)F-42 F-42V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Ret

Plug J20Lead 715+12347865Lead 716-TROUBLESHOOTING AND REPAIRFAN CONTROL AND MOTOR TEST (continued)F-43 F-43V350-PROReturn to Section TOC Return to Sec

NOTESF-44 F-44V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC Return to Master TOC

TROUBLESHOOTING AND REPAIRF-45 F-45V350-PROReturn to Section TOC Return to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOC

TROUBLESHOOTING AND REPAIRSPI CABLE RESISTANCE AND VOLTAGE TEST (continued)F-46 F-46V350-PROReturn to Section TOC Return to Section TOC Return to Sect

VOLTAGE AND CURRENT CALIBRATION PROCEDUREService and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repair

TROUBLESHOOTING AND REPAIRVOLTAGE AND CURRENT CALIBRATION PROCEDURE (continued)F-48 F-48V350-PROReturn to Section TOC Return to Section TOC Return to

CURRENT CALIBRATION PROCEDURE1. Connect the resistive load band (approxi-mately .087 ohms) and test ammeter to thewelding output terminals.2. Press an