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Lincoln Electric SVM176-A manual

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Table of contents for the manual

  • Page 1

    SVM176-A July , 2007 Safety Depends on Y ou Lincoln arc welding and cutting equipment is designed and built with safety in mind. However , your overall safety can be increased by proper installation ... and thoughtful operation on you r part . DO NO T INST ALL , OPERA TE OR REP AIR THIS EQUIPMENT WITHOUT READ- ING THIS MANUAL AND THE SAFETY PRECAUT[...]

  • Page 2

    Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or ven[...]

  • Page 3

    FUMES AND GASES can be dangerous. 5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases.When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing zone. When welding with electrodes which require special ventilation such[...]

  • Page 4

    Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ELECTRICALL Y powered equipment. 8.a. T urn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer ʼs recomme[...]

  • Page 5

    Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L ?[...]

  • Page 6

    LN-23P MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v Page Safety .................................................................................................................................................i-iv Installation .........................................................................................................................[...]

  • Page 7

    T ABLE OF CONTENTS - INST ALLA TION SECTION - LN-23P I n s t a l l a t i o n ................................................... S e c t i o nA T e c h n i c a l S p e c i f i c a t i o n s ...................................... A - 2 S a f e t y P r e c a u t i o n s .......................................... A - 3 I n p u t C a b l e C o n n e c [...]

  • Page 8

    INST ALLA TION A-2 LN-23P A-2 TECHNICAL SPECIFICA TIONS – LN-23P 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 TEMPERA TURE RANGE OPERA TION: - 30 o C o * to +40 o C (- 22 o F to +104 o F) STORAGE: - 40 o C to +40 o C (- 4[...]

  • Page 9

    LN-23P INST ALLA TION A-3 A-3 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 INPUT CABLE : For K316L-1 (6 pin connector) The standard 25 foot input cable between the LN-23P and the power source (with a K350 Adapter Kit) con- [...]

  • Page 10

    INST ALLA TION LN-23P 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 • DC-600 (below code 10500): Attach the triangular mounting plate to the shock mounted plate of the Adapter with three of the #10 self-tapping screws prov[...]

  • Page 11

    ACCESSORIES A-5 A-5 LN-23P POWER SOURCE One or two LN-23Pʼs can be connected to a DC power source (constant voltage) with a K-350 or K350-1 Adapter Kit. If two LN-23Pʼs are connected, they can be set for different procedures but only one can be used at a time. Power source connection diagrams: M17323 M14272 S25869 S25149 LN-23P/ Power Source Comb[...]

  • Page 12

    NOTES A-6 A-6 LN-23P 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[...]

  • Page 13

    T ABLE OF CONTENTS - OPERA TION SECTION - LN-23P Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section B Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 14

    OPERA TION B-2 B-2 LN-23P 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 PRODUCT DESCRIPTION The K316L-[ ] / LN-23P is an arc voltage powered, lightweight, portable wire feed unit which includes cali- brated wire speed contro[...]

  • Page 15

    OPERA TION B-3 B-3 LN-23P DRIVE ROLL PRESSURE The drive roll pressure is pre-set at the factory for proper feeding. If the idle roll tension must be relieved temporarily , see the Maintenance Section for proper adjustment procedure. ADJUSTING WIRE FEED SPEED AND VOL T AGE Set the wire feed as specified in the procedures using the calibrated dial on[...]

  • Page 16

    NOTES B-4 B-4 LN-23P 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[...]

  • Page 17

    T ABLE OF CONTENTS - ACCESSORIES SECTION - LN-23P Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section C LN-23P Gun and Cable Assemblies Chart . . . . . . . . . . . . . . . . . . . . . . . . C-2 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 18

    ACCESSORIES C-2 C-2 LN-23P OPTIONAL EQUIPMENT GUN AND CABLE ASSEMBLIES K350 ADAPTER KIT Required when using the LN-23P on any constant voltage power source. Either one or two LN-23Pʼs can be connected to the Adapter . If two LN-23Pʼs are con- nected, they can be set for different procedures. The Adapter circuit is interlocked so only one LN-23P c[...]

  • Page 19

    T ABLE OF CONTENTS - MAINTENANCE SECTION - LN-23P M a i n t e n a n c e ................................................. S e c t i o n D S a f e t y P r e c a u t i o n s .......................................... D - 2 Replacing or Reeversing Drive Rolls . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2 R e m o v i n g I d l e R o l l A[...]

  • Page 20

    MAINTENANCE D-2 D-2 LN-23P 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 GUN AND CABLE MAINTENANCE Remove spatter from tip after each ten minutes of arc time or as required. Replace worn contact tips and thread protectors as[...]

  • Page 21

    MAINTENANCE D-3 D-3 LN-23P 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 CIRCUIT PROTECTION Circuit Breaker – The 3.5 amp circuit breaker located on the rear of the unit normally trips only when an over- load occurs becaus[...]

  • Page 22

    NOTES D-4 D-4 LN-23P 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[...]

  • Page 23

    T ABLE OF CONTENTS - THEOR Y OF OPERA TION SECTION - LN-23P T h e o r y o f O p e r a t i o n ........................................... S e c t i o n E G e n e r a l D e s c r i p t i o n ......................................... E - 2 I n p u t P o w e r C i r c u i t ...................................... E - 2 C o n t r o l C i r c u i t O p e[...]

  • Page 24

    THEOR Y OF OPERA TION E-2 E-2 LN-23P + VOLTMETER WIRE SPEED CONTROL REDUCED SPEED CONTROL GUN TRIGGER SWITCH REED SWITCH ACTIVATED GUN CONDUCTOR BLOCK WIRE FEED MOTOR BY WELDING CURRENT VOLTAGE CONTROL LN-23P CONTROL P.C. BOARD 3.5 A CIRCUIT BREAKER 567 R12 R75 535 535 A B C D 539 647 647 WORK 604 602 604 604 21 77 75 76 521 602 604 WORK (+) ELECTR[...]

  • Page 25

    THEOR Y OF OPERA TION E-3 E-3 LN-23P CONTROL CIRCUIT OPERA TION VOL TS AND SPEED CONTROL CIRCUITS The V oltage Control is connected directly to the K350 Adapter or the power source (if no adapter is required) by leads 75, 76 & 77. It can be adjusted while welding to provide the voltage called for by the weld procedure. The wire feed speed is co[...]

  • Page 26

    THEOR Y OF OPERA TION E-4 E-4 LN-23P OPTIONAL CIRCUITS K350 / K350-1ADAPTER KITS The K350 Adapter kits are used to interface one or two LN-23P feeders to a Lincoln CV power source. Figure E.4 shows a typical two feeder connection using a K350-1. If o nly one feeder is used it must be connected to the “Feeder A” terminal strip. NOTE: Many of the[...]

  • Page 27

    THEOR Y OF OPERA TION E-5 E-5 LN-23P FIGURE E.5 K350-1 DIAGRAM NOTE: Unshaded areas of block logic diagrams are the subject of discussion. K350 / K350-1ADAPTER KITS (cont.) The wiring diagram in Figure E.5 shows the internal connections that allow the voltage control, the welder output (contactor) control and the Work Sense Lead (#21) to be switche[...]

  • Page 28

    NOTES E-6 E-6 LN-23P 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[...]

  • Page 29

    T roubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section F How to Use T roubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2 PC Board T roubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . F-3 T roubleshooting Guide . . . . . . . . . . . . . . [...]

  • Page 30

    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-2 F-2 TROUBLESHOOTING AND REP AIR If for any reason you do not understand the test procedures or are unable to perform the t e s t s / r e p a i r s s a f e l y, c o n t a c t [...]

  • Page 31

    F-3 F-3 TROUBLESHOOTING & REP AIR Sometimes machine failures appear to be due to PC board failures. These problems can sometimes be traced to poor electrical connections. T o avoid prob- lems when troubleshooting and replacing PC boards, please use the following procedure: 1. Determine to the best of your technical ability that the PC board is [...]

  • Page 32

    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 LN-23P F-4 F-4 TROUBLESHOOTING AND REP AIR FEEDING PROBLEMS Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMEN[...]

  • Page 33

    LN-23P 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-5 F-5 TROUBLESHOOTING AND REP AIR FEEDING PROBLEMS (cont.) Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISA[...]

  • Page 34

    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 LN-23P If for any reason you do not understand t he test procedures or are unable to perform the tests/repairs safely , contact the Lincoln Electric Service Department for techni[...]

  • Page 35

    LN-23P 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-7 F-7 TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory traine d personnel. Unauthorized repairs performed on this equi[...]

  • Page 36

    LN-23P 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-8 F-8 TROUBLESHOOTING AND REP AIR WIRE FEEDER TEST (cont.) FIGURE F .1 FEEDER TEST SET -UP TEST PROCEDURE 1. Remove the welding wire from the drive rolls. Be careful not[...]

  • Page 37

    LN-23P 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-9 F-9 TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory trained person- nel. Unauthorized repairs performed on this equ[...]

  • Page 38

    LN-23P 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-10 F-10 TROUBLESHOOTING AND REP AIR GUN TEST (cont.) FIGURE F .2 GUN CABLE TESTS TEST PROCEDURE 1. T o check the Gun T rigger: a. Disconnect the three pin (lower) Amphen[...]

  • Page 39

    LN-23P F-11 F-11 TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory trained person- nel. Unauthorized repairs performed on this equipment may result in danger to the tech- nician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please obse[...]

  • Page 40

    LN-23P F-12 F-12 TROUBLESHOOTING AND REP AIR FEED HEAD TEST (cont.) TEST PROCEDURE 1. Remove the weld wire from the drive rolls. 2. Disconnect the motor leads, 541 and 539, from the Control Board and clamp an amp probe around one of the leads. NOTE: A DC ammeter may be connected in series with a motor lead if a current probe is not available. 3. Co[...]

  • Page 41

    LN-23P F-13 F-13 TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory trained person- nel. Unauthorized repairs performed on this equipment may result in danger to the tech- nician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please obse[...]

  • Page 42

    LN-23P 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-14 F-14 TROUBLESHOOTING AND REP AIR POTENTIOMETER TEST (cont.) TEST PROCEDURE WIRE SPEED CONTROL POTENTIOMETER 1. Disconnect leads 641, 642 and 535 from the Control Boar[...]

  • Page 43

    LN-23P F-15 F-15 TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory trained person- nel. Unauthorized repairs performed on this equipment may result in danger to the tech- nician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please obse[...]

  • Page 44

    LN-23P 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-16 F-16 TROUBLESHOOTING AND REP AIR K350(-1) ADAPTER TEST (cont.) FIGURE F .5 TEST SET -UP 2B 2A 31 32 4 77 76 75 21 6 6 7 7 7 5 0 0 5 6 7 2 2 4 1 6 6 7 7 7 5 0 0 5 6 7 [...]

  • Page 45

    LN-23P F-17 F-17 TROUBLESHOOTING AND REP AIR K350(-1) ADAPTER TEST (cont.) TEST PROCEDURE 1. Connect a switched and grounded 120V AC supply to terminals 31 & 32 of the Control T erminal Strip and the ground stud (GND) as shown in Fig. F .5. 2. Connect two toggle or push button switches to ter- minals 602 & 604 of the Wire Feed T ereminal st[...]

  • Page 46

    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 LN-23P 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[...]

  • Page 47

    LN-23P Section G-1 Section G-1 T ABLE OF CONTENTS - ELECTRICAL DIAGRAMS SECTION - Electrical Diagrams ........................................................................................................................Section G Wiring Diagram - (M14197) ............................................................................................[...]

  • Page 48

    ELECTRICAL DIAGRAMS G-2 LN-23P WIRING DIAGRAM - ENTIRE MACHINE - (M14197) G-2 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. Return to Section TOC Return to Section TOC Return to Section [...]

  • Page 49

    ELECTRICAL DIAGRAMS G-3 LN-23P SCHEMA TIC - ENTIRE MACHINE (L6518) G-3 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. 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[...]

  • Page 50

    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 ELECTRICAL DIAGRAMS G-4 LN-23P WIRING DIAGRAM - K350 ADAPTER KIT (M14247) G-4 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this m[...]

  • Page 51

    ELECTRICAL DIAGRAMS G-5 LN-23P WIRING DIAGRAM K350-1 ADAPTER KIT (M17514) G-5 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. 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 Mast[...]

  • Page 52

    ELECTRICAL DIAGRAMS G-6 LN-23P MACHINE SCHEMA TIC FOR K350/K350-1 ADAPTER G-6 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. 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 Mast[...]

  • Page 53

    NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro - vided for reference only . Lincoln Electric discourages board level trou[...]

  • Page 54

    NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty . Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro - vided for reference only . Lincoln Electric discourages board level trou[...]

  • Page 55

    ELECTRICAL DIAGRAMS G-9 LN-23P SCHEMA TIC FOR LN-23P CODES 10892 AND HIGHER (L1 1838-3) G-9 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. 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 [...]