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Инструкция обслуживания Lincoln Electric LF-72/74

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Summary
  • Lincoln Electric LF-72/74 - page 1

    LF- 72/74 SVM171-A January , 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 pr oper installation ... and thoughtful operation on your part. DO NOT INST ALL, OPERA TE OR REP AIR THIS EQUIPMENT WITHOUT READ- ING THIS MANUAL AND THE SAFE ...

  • Lincoln Electric LF-72/74 - page 2

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 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, w ...

  • Lincoln Electric LF-72/74 - page 3

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I sta ...

  • Lincoln Electric LF-72/74 - page 4

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC FOR ELECTRICALL Y powered equipment. 8.a. T urn of f 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 ...

  • Lincoln Electric LF-72/74 - page 5

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 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: ...

  • Lincoln Electric LF-72/74 - page 6

    LF-72/74 MASTER T ABLE OF CONTENTS FOR ALL SECTIONS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i-iv Installation LF-72 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A Installation LF-74 . . . . . . . . . . . . . . . . . ...

  • Lincoln Electric LF-72/74 - page 7

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section A-1 Section A-1 T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation ..............................................................................................................Section A T echnical Spec ...

  • Lincoln Electric LF-72/74 - page 8

    LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC A-2 INST ALLA TION A-2 TECHNICAL SPECIFICA TIONS : LF-72 Wire Feeder SPEC.# TYPE WIRE FEED SPEED RANGE ∆ Dime ...

  • Lincoln Electric LF-72/74 - page 9

    A-3 A-3 LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC INST ALLA TION SAFETY PRECAUTION LOCA TION The LF-72 may be placed on a bench or mounted on top of a we ...

  • Lincoln Electric LF-72/74 - page 10

    INST ALLA TION LF-72/74 A-4 A-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MOUNT The LF-72 mounts in a variety of configurations. As s hipped from the factor ...

  • Lincoln Electric LF-72/74 - page 11

    LF-72/74 INST ALLA TION A -5 A-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTION ELECTRIC SHOCK can kill. • Only qualified personnel should perform ...

  • Lincoln Electric LF-72/74 - page 12

    LF-72/74 INST ALLA TION A-6 A-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC COAXIAL WELD CABLES C oaxial welding cables are specially designed welding cables for pu ...

  • Lincoln Electric LF-72/74 - page 13

    LF-72/74 INST ALLA TION A-7 A-7 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ANALOG CONTROL CABLE CONTROL CABLE CONNECTIONS • All control cables can be connected e ...

  • Lincoln Electric LF-72/74 - page 14

    LF-72/74 NOTES A-8 A-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ANALOG MILLER CONTROL CABLE ADAPTER K2335-1 This Lincoln Electric wire feeder may be mounted to a ...

  • Lincoln Electric LF-72/74 - page 15

    LF-72/74 INST ALLA TION A-9 A-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELDING GUN/WIRE FEEDER TRIGGER CONNECTOR Wire Feeder Pin Function A Gun T rigger B- C C ...

  • Lincoln Electric LF-72/74 - page 16

    LF-72/74 INST ALLA TION A-10 A-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELDING GUNS, TORCHES AND ACCES- SORIES GUN RECEIVER BUSHING The LF-72 wire feeder com ...

  • Lincoln Electric LF-72/74 - page 17

    LF-72/74 INST ALLA TION A-11 A-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WIRE DRIVE CONFIGURA TION (See Figure A.5) C hanging the Gun Receiver Bushing ELECTRIC ...

  • Lincoln Electric LF-72/74 - page 18

    LF-72/74 INST ALLA TION A-12 A-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill. • T urn the input power OFF at the ...

  • Lincoln Electric LF-72/74 - page 19

    LF-72/74 INST ALLA TION A-13 A-13 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3. Re-install the retaining collar . Make sure that the r elease bar snaps out and tha ...

  • Lincoln Electric LF-72/74 - page 20

    LF-72/74 INST ALLA TION A-14 A-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELD WIRE ROUTING The electrode supply may be either from reels, Readi- Reels, spools, ...

  • Lincoln Electric LF-72/74 - page 21

    LF-72/74 INST ALLA TION A-15 A-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SHIELDING GAS CONNECTION C YLINDER may explode if damaged. • Keep cylinder upright a ...

  • Lincoln Electric LF-72/74 - page 22

    LF-72/74 INST ALLA TION A-16 A-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC INST ALLING ELECTRODE CONDUIT KITS ELECTRIC SHOCK can kill. • T urn the input power ...

  • Lincoln Electric LF-72/74 - page 23

    LF-72/74 INST ALLA TION A-17 A-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ALUMINUM WIRE PREP ARA TIONS ELECTRIC SHOCK can kill. • T urn the input power OFF at ...

  • Lincoln Electric LF-72/74 - page 24

    LF-72/74 INST ALLA TION A-18 A-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MODEL ST ANDARD DUTY BENCH MODEL HEA VY DUTY BASE MODEL ...

  • Lincoln Electric LF-72/74 - page 25

    LF-72/74 INST ALLA TION A-19 A-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TYPICAL SYSTEM CONFIGURA TIONS The LF-72 is capable of welding with many different wel ...

  • Lincoln Electric LF-72/74 - page 26

    LF-72/74 NOTES A-20 A-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ...

  • Lincoln Electric LF-72/74 - page 27

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section B-1 Section B-1 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ................................................................................................................Section B Safety Precautions . ...

  • Lincoln Electric LF-72/74 - page 28

    Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC B-2 B-2 LF-72/74 OPERA TION COLD FEED POSITIVE OUTPUT NEGA TIVE OUTPUT PROTECTIVE GROUND W ARNING OR CAUTION DANGEROUS V ...

  • Lincoln Electric LF-72/74 - page 29

    LF-72/74 OPERA TION B-3 B-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC COMMON WELDING ABBREVIA TIONS WFS • Wire Feed Speed CV • Constant V oltage GMA W (MIG) ? ...

  • Lincoln Electric LF-72/74 - page 30

    OPERA TION LF-72/74 B-4 B-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ITEM DESCRIPTION 1 Location for Optional Remote V oltage Control (See Accessory Section For ...

  • Lincoln Electric LF-72/74 - page 31

    Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPERA TION B-5 B-5 LF-72/74 SINGLE/DUAL 1. REMOTE VOL T AGE CONTROL KIT The o ptional r emote voltage control kit adjust ...

  • Lincoln Electric LF-72/74 - page 32

    LF-72/74 OPERA TION B-6 B-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC T rigger Interlock T rigger Interlock operation provides for operator com- fort when making ...

  • Lincoln Electric LF-72/74 - page 33

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section C-1 Section C-1 T ABLE OF CONTENTS - ACCESSORIES SECTION - Accessories ............................................................................................................Section C General Options / Acc ...

  • Lincoln Electric LF-72/74 - page 34

    LF-72/74 ACCESSORIES C-2 C-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K 2329-1 K2330-1 K2328-1 K2331-1 K2332-1 K1796-xx K1803-1 K1840-xx K1841-xx ...

  • Lincoln Electric LF-72/74 - page 35

    LF-72/74 ACCESSORIES C-3 C-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K1797-xx K2335-1 K1520-1 K1798 K910-1 K910-2 K1500-1 K1500-2 (standard on al ...

  • Lincoln Electric LF-72/74 - page 36

    LF-72/74 ACCESSORIES C-4 C-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K489-7 K466-2 K613-7 K1546-1 K1546-2 K435 K468 K363P K438 K1504-1 Gun Receiv ...

  • Lincoln Electric LF-72/74 - page 37

    LF-72/74 ACCESSORIES C-5 C-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K1634-1 K1634-2 K659-1 3000290 K586-1 K1524-3 K163 K1557-1 K1556-1 K1555-1 P ...

  • Lincoln Electric LF-72/74 - page 38

    LF-72/74 NOTES C-6 C-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ...

  • Lincoln Electric LF-72/74 - page 39

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section D-1 Section D-1 T ABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance ...........................................................................................................Section D Safety Precautions ... ...

  • Lincoln Electric LF-72/74 - page 40

    D-2 D-2 LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC MAINTENANCE MAINTENANCE Safety Precautions ELECTRIC SHOCK can kill. • Do not touch electrically live ...

  • Lincoln Electric LF-72/74 - page 41

    MAINTENANCE D-3 D-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL 4. Open the idle arm. 5. T urn power on to the LF-72. 6. Adjust the WFS knob to ...

  • Lincoln Electric LF-72/74 - page 42

    LF-72/74 MAINTENANCE D-4 D-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3 1 4 2 1. Center Assembly 2. Wire Drive Assembly 3. Wire Reel Stand LF-72 4. Wire Reel Sta ...

  • Lincoln Electric LF-72/74 - page 43

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 Section AA-1 Section AA-1 T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation ............................................................................................................Section AA T echnical Specifications ...

  • Lincoln Electric LF-72/74 - page 44

    LF-72/74 INST ALLA TION AA-2 AA-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TECHNICAL SPECIFICA TIONS : LF-74 Wire Feeder SPEC.# TYPE WIRE FEED SPEED RANGE ITEMS ...

  • Lincoln Electric LF-72/74 - page 45

    LF-72/74 INST ALLA TION AA-3 AA-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTION LOCA TION The LF-74 may be placed on a bench, mounted on top of a we ...

  • Lincoln Electric LF-72/74 - page 46

    LF-72/74 INST ALLA TION AA-4 AA-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MOUNT The LF-74 mounts in a variety of configurations. As s hipped from the fact ...

  • Lincoln Electric LF-72/74 - page 47

    LF-72/74 INST ALLA TION AA-5 AA-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTION ELECTRIC SHOCK can kill. • Only qualified personnel should perform ...

  • Lincoln Electric LF-72/74 - page 48

    LF-72/74 INST ALLA TION AA-6 AA-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC COAXIAL WELD CABLES Coaxial welding cables are specially designed welding cables for p ...

  • Lincoln Electric LF-72/74 - page 49

    LF-72/74 INST ALLA TION AA-7 AA-7 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ANALOG CONTROL CABLE CONTROL CABLE CONNECTIONS K1797-xx The control cable connecting t ...

  • Lincoln Electric LF-72/74 - page 50

    LF-72/74 INST ALLA TION AA-8 AA-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ANALOG MILLER CONTROL CABLE ADAPTER K2335-1 This Lincoln Electric wire feeder may be m ...

  • Lincoln Electric LF-72/74 - page 51

    LF-72/74 INST ALLA TION AA-9 AA-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELDING GUN/WIRE FEEDER TRIGGER CONNECTOR Wire Feeder Pin Function A Gun T rigger B- C ...

  • Lincoln Electric LF-72/74 - page 52

    LF-72/74 INST ALLA TION AA-10 AA-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELDING GUNS, TORCHES AND ACCES- SORIES GUN RECEIVER BUSHING The LF-74 wire feeder c ...

  • Lincoln Electric LF-72/74 - page 53

    LF-72/74 INST ALLA TION AA-11 AA-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC Gun Receiver For use With Bushing K1500-1 K466-1 Lincoln gun connectors; Innershield ...

  • Lincoln Electric LF-72/74 - page 54

    LF-72/74 INST ALLA TION AA-12 AA-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ASSEMBL Y OF DRIVE ROLLS AND WIRE GUIDES ELECTRIC SHOCK can kill. • T urn the inpu ...

  • Lincoln Electric LF-72/74 - page 55

    PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill. • T urn the input power OFF at the welding power s ource before installation or changing drive rolls and/or guides. • Do not touch electrically live parts. • When inching with the gun trigger , electrode and drive mechanism are "hot" to work and ground and could remain energized sever ...

  • Lincoln Electric LF-72/74 - page 56

    LF-72/74 INST ALLA TION AA-14 AA-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SHIELDING GAS CONNECTION C YLINDER may explode if damaged. • Keep cylinder upright ...

  • Lincoln Electric LF-72/74 - page 57

    LF-72/74 INST ALLA TION AA-15 AA-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3. Re-install the retaining collar . Make sure that the release bar snaps out and th ...

  • Lincoln Electric LF-72/74 - page 58

    LF-72/74 INST ALLA TION AA-16 AA-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WELD WIRE ROUTING The electrode supply may be either from reels, Readi- Reels, spool ...

  • Lincoln Electric LF-72/74 - page 59

    LF-72/74 INST ALLA TION AA-17 AA-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC INST ALLING ELECTRODE CONDUIT KITS ELECTRIC SHOCK can kill. • T urn the input powe ...

  • Lincoln Electric LF-72/74 - page 60

    LF-72/74 INST ALLA TION AA-18 AA-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ALUMINUM WIRE PREP ARA TIONS ELECTRIC SHOCK can kill. • T urn the input power OFF ...

  • Lincoln Electric LF-72/74 - page 61

    LF-72/74 INST ALLA TION AA-19 AA-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MODEL WITH HEA VY DUTY WIRE ST AND (K2426-2) EXTRA T ORQUE BENCH MODEL WITH HE ...

  • Lincoln Electric LF-72/74 - page 62

    LF-72/74 INST ALLA TION AA-20 AA-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 2B 2B 4A 4A 1C 1C 4B 4B 5 5 2A 2A COMMON EQUIPMENT SET -UPS FIGURE AA.14 GENERAL F A ...

  • Lincoln Electric LF-72/74 - page 63

    LF-72/74 INST ALLA TION AA-21 AA-21 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC Item 1A 1B 1C - 1D 2 3 4 5A 5B 6 7 8 9 10 1 1 K# K2426-1 K1797-xx See Welding Gun Li ...

  • Lincoln Electric LF-72/74 - page 64

    LF-72/74 INST ALLA TION AA-22 AA-22 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC Item 1 2 3A 3C 3D 4 5A 5C 6 7 7A 8 9 10 K# See Welding Gun Literature K2329-1 K2426- ...

  • Lincoln Electric LF-72/74 - page 65

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section BB-1 Section BB-1 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ..............................................................................................................Section BB Safety Precau ...

  • Lincoln Electric LF-72/74 - page 66

    LF-72/74 OPERA TION BB-2 BB-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTIONS Read this entire section of operating instructions b efore operating th ...

  • Lincoln Electric LF-72/74 - page 67

    LF-72/74 OPERA TION BB-3 BB-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC G eneral Functional Description The LF-74 fulfills the need for an economical wire feed- e ...

  • Lincoln Electric LF-72/74 - page 68

    LF-72/74 OPERA TION BB-4 BB-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ITEM DESCRIPTION 1 Wire Feed Speed Knob. 2 Location for Optional Remote V oltage Control ( ...

  • Lincoln Electric LF-72/74 - page 69

    LF-72/74 OPERA TION BB-5 BB-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 1. WIRE FEED SPEED KNOB T he large, calibrated wire feed speed knob makes for easy and acc ...

  • Lincoln Electric LF-72/74 - page 70

    LF-72/74 OPERA TION BB-6 BB-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 6. 2 STEP - TRIGGER INTERLOCK SWITCH T he 2 Step - T rigger Interlock switch changes the f ...

  • Lincoln Electric LF-72/74 - page 71

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section CC-1 Section CC-1 T ABLE OF CONTENTS - ACCESSORIES SECTION - Accessories .........................................................................................................Section CC General Options ...

  • Lincoln Electric LF-72/74 - page 72

    LF-72/74 ACCESSORIES CC-2 CC-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K2329-1 K2330-1 K2328-1 K2331-1 K2332-1 K1796-xx K1803-1 K1840-xx K1841-xx ...

  • Lincoln Electric LF-72/74 - page 73

    LF-72/74 ACCESSORIES CC-3 CC-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K1797-xx K2335-1 K1520-1 K1798 K910-1 K910-2 K1500-1 K1500-2 (standard on ...

  • Lincoln Electric LF-72/74 - page 74

    LF-72/74 ACCESSORIES CC-4 CC-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K489-7 K466-2 K613-7 K1546-1 K1546-2 K435 K468 K468-1 K363P K438 K1504-1 G ...

  • Lincoln Electric LF-72/74 - page 75

    LF-72/74 ACCESSORIES CC-5 CC-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPTIONAL KITS: K1634-1 K1634-2 K659-1 3000290 K586-1 K1524-3 K163 K1557-1 K1556-1 K1555-1 ...

  • Lincoln Electric LF-72/74 - page 76

    LF-72/74 NOTES CC-6 CC-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ...

  • Lincoln Electric LF-72/74 - page 77

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section DD-1 Section DD-1 T ABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance ........................................................................................................Section DD Safety Precautio ...

  • Lincoln Electric LF-72/74 - page 78

    LF-72/74 MAINTENANCE DD-2 DD-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC MAINTENANCE Safety Precautions ELECTRIC SHOCK can kill. • Do not touch electrically liv ...

  • Lincoln Electric LF-72/74 - page 79

    LF-72/74 MAINTENANCE DD-3 DD-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC FIGURE DD.1 FIGURE DD.2 J2 CONNECTOR ...

  • Lincoln Electric LF-72/74 - page 80

    LF-72/74 MAINTENANCE DD-4 DD-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3 1 4 2 1. Center Assembly 2. Wire Drive Assembly 3. Wire Reel Stand LF-72 4. Wire Reel S ...

  • Lincoln Electric LF-72/74 - page 81

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section E-1 Section E-1 Theory of Operation ...............................................................................................Section E General Description ................................................. ...

  • Lincoln Electric LF-72/74 - page 82

    F IGURE E.2 GENERAL DESCRIPTION & INPUT RECEPT ACLE, CONTROL BOARD AND OPERA TOR CONTROLS 14 PIN INPUT CABLE R ECEPTACLE 2 4/42 VAC CONTROL BOARD WIRE FEED SPEED POT. TRIGGER INTERLOCK 2-STEP C OLD FEED GAS PURGE OPTIONAL BURNBACK TIMER OPTIONAL REMOTE VOLTAGE C ONTROL GAS SOLENOID 3.75 AMP OVERLOAD PROTECTION WIRE DRIVE RECEPTACLE WIRE DRIVE M ...

  • Lincoln Electric LF-72/74 - page 83

    LF-72/74 THEOR Y OF OPERA TION DRIVE MOTOR, T ACH FEEDBACK AND GAS SOLENOID The leads to the drive motor , gas solenoid and the tach (hall effect device LF-74 and LF-72 above codes 11290) are br ought into the control box via the 14 pin receptacle. This 14 pin r eceptacle also houses the gun trigger leads and the voltage sense leads. When the gun t ...

  • Lincoln Electric LF-72/74 - page 84

    LF-72/74 NOTES E-4 E-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ...

  • Lincoln Electric LF-72/74 - page 85

    Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section F-1 Section F-1 T ABLE OF CONTENTS - TROUBLESHOOTING & REP AIR SECTION - T roubleshooting & Repair Section ........................................................................Section F How to Use T ...

  • Lincoln Electric LF-72/74 - page 86

    HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory T rained Personnel. Unauthorized repairs performed on this equipment may r esult in danger to the technician and machine operator and will invalidate your factory warranty . For your safety and to avoid Electrical Shock, please observe all safet ...

  • Lincoln Electric LF-72/74 - page 87

    LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING & REP AIR F-3 F-3 Sometimes machine failures appear to be due to PC board failures. These p ...

  • Lincoln Electric LF-72/74 - page 88

    Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING & REP AIR F-4 F-4 PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MISADJUSTMENT(S) RECOMMENDED COURSE OF ACTIO ...

  • Lincoln Electric LF-72/74 - page 89

    The arc burns back to the tip. The gas continues to flow for a long time after the weld. 1. If timer kit is installed, reduce the amount of burnback time. 2. If the timer kit is installed, reduce the amount of post flow time. Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ...

  • Lincoln Electric LF-72/74 - page 90

    LF-72/74 TROUBLESHOOTING & REP AIR F-6 F-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 Observe Safety Guidelines detailed in the beginning of this manu ...

  • Lincoln Electric LF-72/74 - page 91

    Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty . For your safety and to avoid electrical shock, please observe all safety notes and pre- cautions detailed t ...

  • Lincoln Electric LF-72/74 - page 92

    LF-72/74 F-8 F-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING & REP AIR TEST PROCEDURE 1. Remove power from the LF72/LF74 wir e drive unit. 2. Us ...

  • Lincoln Electric LF-72/74 - page 93

    LF-72/74 F-9 F-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory tra ...

  • Lincoln Electric LF-72/74 - page 94

    LF-72/74 F-10 F-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR GAS SOLENOID 552B 552 553 Off = 0 VDC OCV = 59 VDC On = 7.7 VDC Located o ...

  • Lincoln Electric LF-72/74 - page 95

    LF-72/74 F-11 F-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory t ...

  • Lincoln Electric LF-72/74 - page 96

    LF-72/74 F-12 F-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR 552A 552B + - 580 42 41 DIODE BRIDGE TEST (continued) FIGURE F .4 – CON ...

  • Lincoln Electric LF-72/74 - page 97

    LF-72/74 F-13 F-13 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory t ...

  • Lincoln Electric LF-72/74 - page 98

    LF-72/74 F-14 F-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 577 576 575 0 VDC MIN. WFS 5 VDC MIN. WFS 10K/2W WIRE FEED SPEED CONTROL POTENTIOMETER TEST PROCEDURE ...

  • Lincoln Electric LF-72/74 - page 99

    LF-72/74 F-15 F-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory t ...

  • Lincoln Electric LF-72/74 - page 100

    LF-72/74 F-16 F-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC REMOV AL PROCEDURE 1. Remove the input power ( 42V AC ) from the LN72/LN74 unit. 2. Using the 5/16 nu ...

  • Lincoln Electric LF-72/74 - page 101

    LF-72/74 F-17 F-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR Service and repair should be performed by only Lincoln Electric factory t ...

  • Lincoln Electric LF-72/74 - page 102

    LF-72/74 F-18 F-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR WIRE DRIVE MOT OR AND GEAR BOX REMOV AL AND REPLACEMENT PROCEDURE (Contin ...

  • Lincoln Electric LF-72/74 - page 103

    LF-72/74 F-19 F-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR WIRE DRIVE MOT OR AND GEAR BOX REMOV AL AND REPLACEMENT PROCEDURE (Contin ...

  • Lincoln Electric LF-72/74 - page 104

    LF-72/74 TROUBLESHOOTING AND REP AIR F-20 F-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WIRE DRIVE MOT OR AND GEAR BOX REMOV AL AND REPLACEMENT PROCEDURE (Contin ...

  • Lincoln Electric LF-72/74 - page 105

    LF-72/74 TROUBLESHOOTING AND REP AIR F-21 F-21 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC RETEST AFTER REP AIR Retest a machine: • If it is rejected under test f ...

  • Lincoln Electric LF-72/74 - page 106

    LF-72/74 NOTES F-22 F-22 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ...

  • Lincoln Electric LF-72/74 - page 107

    LF-72/74 Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T OC Re tur n to Ma st e r T OC Section G-1 Section G-1 T ABLE OF CONTENTS - ELECTRICAL DIAGRAMS SECTION - Electrical Diagrams........................................................................................................................Section G Wiring ...

  • Lincoln Electric LF-72/74 - page 108

    ELECTRICAL DIAGRAMS G-2 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1075, 1 1076, 1 1077 (L12146) LF-72 L12146 A CAVITY NUM BERING SEQU ENCE ( COMPONENT SIDE OF P.C. BOARD) J3 2 1 J5,J8 J9,J60 4 3 6 1 GENERAL INFORMATION ELECTRICAL SYMBOLS PER E 1537 C OLOR CODE B - BLACK R- R E D U - BLUE COMMON ANALOG P.C. BOARD A D C B E 554 556 TRIGGER CO ...

  • Lincoln Electric LF-72/74 - page 109

    ELECTRICAL DIAGRAMS G-3 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1209, 1 1210, 1 121 1,1 1227 (L12146-1) LF-72 L12146-1 A CAVITY NUM BERING SEQU ENCE (COMPONENT SIDE OF P.C. BOARD) J 3 2 1 J 5,J8 J9,J60 4 3 6 1 GENERAL INFORMATION ELECTRICAL SYMBOLS PER E 1537 COLOR CODE B - BLACK R- R E D U - BLUE COMMON ANALOG P.C. BOARD A D C B E 554 55 ...

  • Lincoln Electric LF-72/74 - page 110

    ELECTRICAL DIAGRAMS G-4 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1290, 1 1291, 1 1292,1 1293 (L12146-2) LF-72 L12146-2 A C AVITY NUM BERING SEQUENCE (COMPONENT SIDE OF P.C. BOARD) J3 2 1 J5,J8 J 9,J60 4 3 6 1 COMMON ANALOG P.C. BOARD A D C B E 554 5 56 TRIGGER CONNECTOR J13 559 515 558 COLD FEED S1 F EED PLATE GENERAL INFORMATION ELECTRICA ...

  • Lincoln Electric LF-72/74 - page 111

    ELECTRICAL DIAGRAMS G-5 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1 195, 1 1 196, 1 1 197, (L12484) LF-74 L12484 A C AVITY NUM BERING SEQUENCE (COMPONENT SIDE OF P.C. BOARD) J3 2 1 J5,J8 J 9,J60 4 3 6 1 COMMON ANALOG P.C. BOARD A D C B E 554 5 56 TRIGGER CONNECTOR J13 559 515 558 COLD FEED S1 F EED PLATE GENERAL INFORMATION ELECTRICAL SYMBO ...

  • Lincoln Electric LF-72/74 - page 112

    Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T OC Re tur n to Ma st e r T OC ELECTRICAL DIAGRAMS G-6 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1075, 1 1076, 1 1077 (G4617) LF-72 A D C B E 554 5 ...

  • Lincoln Electric LF-72/74 - page 113

    ELECTRICAL DIAGRAMS G-7 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1209, 1 1210, 1 121 1,1 1227 (G4617-1) LF-72 A D C B E 554 556 TRIG GER C ONNECTOR J4 559 515 558 COLD F EED S1 FEED PLAT E T RIGGER I NPUT 67 556 J1-4 J1-5 J1-11 J1-12 J1-15 559 1 4 3 2 6 5 P 5 8 7 M OT OR / G EARBOX W B L5 515 558 589 587 554 551 550 551 550 576 577 575C 553 55 ...

  • Lincoln Electric LF-72/74 - page 114

    ELECTRICAL DIAGRAMS G-8 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1290, 1 1291, 1 1292,1 1293 (G4617-2) LF-72 A D C B E 554 556 TRIG GER CONNECTOR J 13 559 515 558 C OLD FEED S1 FEED PLAT E TRIG GER INP UT 67 556 J1-4 J1-5 J1-11 J1-12 J1-15 559 1 4 3 2 6 5 P10 8 7 MOT OR / GEARBOX W B L5 515 558 589 587 554 A 550 551 550 576 577 575C 553 552 2 ...

  • Lincoln Electric LF-72/74 - page 115

    ELECTRICAL DIAGRAMS G-9 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1 195, 1 1 196, 1 1 197, (G4942) LF-74 A D C B E 554 556 T RIG GER C ONNECTOR J13 559 515 558 COLD F EED S1 FEED PLAT E T RIGGER I NPUT 67 556 J1-4 J1-5 J1-11 J1-12 J1-15 559 1 4 3 2 6 5 P 10 8 7 M OT OR / GEARBOX W B L5 515 558 589 587 554 A 550 551 550 576 577 575C 553 552 2 4 ...

  • Lincoln Electric LF-72/74 - page 116

    ELECTRICAL DIAGRAMS G-10 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 1) G-10 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re t ur n to Ma st e r ...

  • Lincoln Electric LF-72/74 - page 117

    ELECTRICAL DIAGRAMS G-11 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 2) G-11 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re t ur n to Ma st e r ...

  • Lincoln Electric LF-72/74 - page 118

    ELECTRICAL DIAGRAMS G-12 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 3) G-12 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual. Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re t ur n to Ma st e r ...

  • Lincoln Electric LF-72/74 - page 119

    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 troub ...

Производитель Lincoln Electric Категория Welder

Документы, которые мы получаем от производителя устройства Lincoln Electric LF-72/74 мы можем разделить на несколько групп. Это в частности:
- технические чертежи Lincoln Electric
- инструкции обслуживания LF-72/74
- паспорта изделия Lincoln Electric
- информационные брошюры
- энергетические этикетки Lincoln Electric LF-72/74
Все из них важны, однако самую важную информацию с точки зрения пользователя мы найдем в инструкции обслуживания Lincoln Electric LF-72/74.

Группа документов, определяемая как инструкции обслуживания, делится также на более подробные типы, такие как: Инструкции монтажа Lincoln Electric LF-72/74, инструкции обслуживания, короткие инструкции или инструкции пользователя Lincoln Electric LF-72/74. В зависимости от потребностей, Вам необходимо поискать требуемый документ. На нашем сайте Вы можете просмотреть самую популярную инструкцию использования изделия Lincoln Electric LF-72/74.

Похожие инструкции обслуживания

Полная инструкция обслуживания устройства Lincoln Electric LF-72/74, как должна выглядеть?
Инструкция обслуживания, определяемая также как пособие пользователя, или просто "руководство" - это технический документ, цель которого заключается в использовании Lincoln Electric LF-72/74 пользователями. Инструкции пишет, как правило технический писатель, языком, доступным для всех пользователей Lincoln Electric LF-72/74.

Полная инструкция обслуживания Lincoln Electric, должна заключать несколько основных элементов. Часть из них менее важная, как например: обложка / титульный лист или авторские страницы. Однако остальная часть, должна дать нам важную с точки зрения пользователя информацию.

1. Вступление и рекомендации, как пользоваться инструкцией Lincoln Electric LF-72/74 - В начале каждой инструкции, необходимо найти указания, как пользоваться данным пособием. Здесь должна находится информация, касающаяся местонахождения содержания Lincoln Electric LF-72/74, FAQ и самых распространенных проблем - то есть мест, которые чаще всего ищут пользователи в каждой инструкции обслуживания
2. Содержание - индекс всех советов, касающихся Lincoln Electric LF-72/74, которое найдем в данном документе
3. Советы по использованию основных функций устройства Lincoln Electric LF-72/74 - которые должны облегчить нам первые шаги во время использования Lincoln Electric LF-72/74
4. Troubleshooting - систематизированный ряд действия, который поможет нам диагностировать а в дальнейшем очередность решения важнейших проблем Lincoln Electric LF-72/74
5. FAQ - чаще всего задаваемые вопросы
6. Контактные данные Информация о том, где искать контактные данные производителя / сервисного центра Lincoln Electric LF-72/74 в данной стране, если самостоятельно не получится решить проблему.

У вас вопрос, касающийся Lincoln Electric LF-72/74?

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Если с помощью найденной инструкции Вы не решили свою проблему с Lincoln Electric LF-72/74, задайте вопрос, заполнив следующий формуляр. Если у какого то из пользователей была похожая проблема с Lincoln Electric LF-72/74 со всей вероятностью он захочет поделиться методом ее решения.

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