Lincoln Electric LN-9 SVM127-A manuale d’uso

SVM127-A November , 1996 Safety Depends on Y ou Lincoln arc welding equipment is designed and built with safety in mind. However , your overall safety can be increased by proper 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 SAFETY PRECAUTIONS CON- T[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY i i LN-9 Wire Feeder 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, [...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY ii ii LN-9 Wire Feeder 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 [...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iii iii LN-9 Wire Feeder 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 [...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iv iv LN-9 Wire Feeder 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- ante[...]

MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v LN-9 Wire Feeder Page Safety .................................................................................................................................................i-iv Installation ...............................................................................................................[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - INST ALLA TION SECTION - Section A-1 Section A-1 LN-9 Wire Feeder Installation ................................................................................................................................Section A T echnical Specifications ..[...]

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 INST ALLA TION A-2 A-2 TECHNICAL SPECIFICA TIONS — LN-9 INPUT POWER Supplied by power source: 1 15 V AC, 50/60 Hz., 350 V A WIRE FEED SPEED 50 to 600 inches per minute (1.27 to[...]

INST ALLING THE LN-9N and LN-9S 2-ROLL AND 4-ROLL MODELS A TT ACHING THE WIRE REEL ST AND Both 2-Roll and 4-Roll LN-9 model wire feeders are shipped without a wire reel stand. The screws and washers for mounting a wire reel stand are included with the LN-9 (fastened in their respective mounting holes). T o attach a stand: 1. Remove the three 3/8&qu[...]

ROUTING THE ELECTRODE The electrode supply may be either from reels, Readi- Reels, spools, or bulk packaged drums or reels. Observe the following precautions: • The electrode must be routed to the wire feed unit so that the bends in the wire are at a minimum. The force required to pull the wire from the reel into the wire feed unit must be kept a[...]

CONNECTING THE POWER INPUT CABLE ASSEMBL Y TO THE LN-9NE or LN-9SE The hand crank drive rolls will feed all the wires used on the extension. The rolls have been stenciled for identification. 1. Position the extension assembly cable so that the amphenol plug with the threads on its O.D. can be attached to the amphenol end of the power input cable. A[...]

7. If using welding currents over 450 amperes, con- nect a length of 1/0 cable between the brass block on the hand crank and the input strap located in the wire drive unit. T ape this cable to the extension assembly . Proper cable lengths are as follows: 22-1/2 ft. extension 26’ M5906-106 45 ft. extension 46’ M5906-104 8. A handle is provided a[...]

CONNECTING THE POWER INPUT CABLE ASSEMBL Y TO POWER SOURCES T urn input supply power to the power source OFF before connecting the LN-9 or LN-9F wire feeder . Connect to an appropriate Lincoln power source as fol- lows: 1. If using a multipurpose source (such as the DC- 250, DC-400 and DC-600), be sure it is properly set for the welding process bei[...]

INST ALLA TION A-8 A-8 LN-9 Wire Feeder 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 FIGURE A.5 – CONNECTION OF LN-9 TO DC-250, DC-400, AND CV/CVI POWER SOURCES Above diagram shows electrode connected positive. T o change[...]

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 INST ALLA TION A-9 A-9 LN-9 Wire Feeder FIGURE A.6 – CONNECTION OF LN-9 TO DC-600 POWER SOURCES Above diagram shows electrode connected positive. T o change polarity , turn pow[...]

INST ALLA TION A-10 A-10 LN-9 Wire Feeder 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 FIGURE A.7 – CONNECTION OF LN-9 TO DC-1000 POWER SOURCES Above diagram shows electrode connected positive. T o change polarity , turn [...]

INST ALLA TION A-11 A-11 LN-9 Wire Feeder 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 FIGURE A.8 – CONNECTION OF LN-9 TO PULSE POWER 500 POWER SOURCES Above diagram shows electrode connected positive. T o change polarity[...]

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 INST ALLA TION A-12 A-12 LN-9 Wire Feeder MACHINE GROUNDING LN-9 wire feeders are grounded to the power source through the input cable. The power source grounding cable must be p[...]

CONNECTING THE GUN CABLE T O THE WIRE FEEDER A variety of gun and cable assemblies are available for the LN-9 models. See the Accessories section of this manual. Lay the cable out straight. Insert the connector on the welding conductor cable into the brass conductor block on the front of the wire drive unit. See Figure A.9. Make sure the connector [...]

NOTES A-14 A-14 LN-9 Wire Feeder 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[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section B-1 Section B-1 LN-9 Wire Feeder T ABLE OF CONTENTS - OPERA TION SECTION - Operation .................................................................................................................................Section B Safety Instructions ..............[...]

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 B-2 B-2 LN-9 Wire Feeder SAFETY INSTRUCTIONS Read and understand this entire section of operating instructions operating the machine. ELECTRIC SHOCK can kill. • Do not touch el[...]

GENERAL DESCRIPTION The LN-9 2-Roll and 4-Roll semiautomatic wire feeder models feature the precise "set and forget" digital pro- cedure control. They are designed to achieve higher quality control and weld quality levels more easily . The arc voltage and wire feed speed can be set on a digital meter before the arc is struck and the proce[...]

CONTROLS AND SETTINGS Operator controls for LN-9N, NE, S and SE models are shown in Figure B.1. Controls for LN-9F models are shown in Figure B.2. Refer to these figures and the fol- lowing descriptions of the controls. ELECTRODE POLARITY SWITCH: The polarity switch is located inside the wire drive section on the LN-9 model and on the front panel o[...]

FIGURE B.1 – WIRE FEEDER CONTROLS FOR LN-9N, NE, S, SE OPERA TION B-5 B-5 LN-9 Wire Feeder 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 VOLTS CONTROL METER READING SWITCH DIGITAL METER SET-ACTUAL PUSHBUTTON CIRCUIT BREAKE[...]

OPERA TION B-6 B-6 LN-9 Wire Feeder 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 FIGURE B.2 – WIRE FEEDER CONTROLS FOR LN-9F LN-9F CONTROL BOX BOTTOM VIEW[...]

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 OPERA TION B-7 B-7 LN-9 Wire Feeder CIRCUIT BREAKER AND GROUNDING LEAD PRO- TECTOR (GLP) RESET SWITCH: These protection circuit devices are located on the front rail of the LN-9 [...]

If such a grounding lead fault occurs, the meter will still be on and will be reading. The trigger circuit will not operate, however . T o release the circuit, press the "GLP Reset" button. See Figure B.1 or B.2 for the location of this button. The following precautions are recommended to avoid GLP shutdown: • Do not allow the electrode[...]

DRIVE ROLL INST ALLA TION AND PRESSURE SETTING CHANGING WIRE FEED ROLLS AND GUIDE TUBES FOR TWO-ROLL WIRE FEEDERS T o change drive or idle rolls on a two-roll wire feeder , refer to Figure B.3 and perform the following steps: 1. Loosen idle roll spring pressure screw . 2. Remove clamping collar from the drive shaft. 3. Install drive roll and replac[...]

6. Loosen the ingoing guide tube clamping screw . Install the all steel guide tube through the rear brass block. T ighten the locking screw . 7. Replace the large ingoing guide tube into rear brass block. 8. Install the outgoing guide tube with its plastic insert through front brass block. T ighten the locking screw so its dog point goes into the g[...]

CHANGING WIRE FEED ROLLS AND GUIDE TUBES FOR 4-ROLL WIRE FEED- ERS T o change drive rolls on a 4-roll wire feeder , refer to Figure B.4 and perform the following steps: 1. Release both quick release levers. 2. Remove clamping collars from both drive shafts. 3. Install one drive roll and replace clamping collar . T ighten screw . 4. Slide the middle[...]

For Aluminum Wire Each set of rolls should have their pressure set independent of the other . T o do this, release and open the other quick release arm while making each adjustment. Follow the procedure below for each adjustment. 1. With low idle roll pressure, load the feeder so it’s ready for welding. 2. Run the feeder at a slow speed (about 10[...]

OPERA TION B-13 B-13 LN-9 Wire Feeder 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 FIGURE B.4 – INST ALLING DRIVE ROLLS ON A 4-ROLL FEEDER[...]

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 OPERA TION B-14 B-14 LN-9 Wire Feeder WIRE LOADING LOADING AND FEEDING READI-REELS OR SPOOLS LOADING A 22 TO 30 LB. READI-REEL P ACKAGE USING THE MOLDED PLASTIC K363-P TYPE ADAPT[...]

7. T o remove the Readi-Reel from the adapter , depress the retaining spring tab with thumb while pulling the Readi-Reel cage from the molded adapter with both hands. Do not remove the adapter from the spindle. LOADING A 15 TO 30 LB. SPOOL (12" DIAMETER): (For 8" spools, a K468 spindle adapter must be used.) 1. Remove the locking collar a[...]

LOADING 50 AND 60 LB. COILS AND BRAKE ADJUSTMENT (K299 or K303 Wire Reel Stand) 1. T o remove the wire reel from its shaft, grasp the spring loaded knob and pull it out. This straightens the knob so that it seats into the shaft when released. Remove the reel. 2. Lay the reel flat on the floor , loosen the spinner nut and remove the cover plate. 3. [...]

ELECTRODE FEEDING 1. T urn the reel until the free end of the electrode is accessible. 2. While tightly holding the electrode, cut off the bent end. Straighten the first 6 inches. 3. Cut off the first inch. Insert the free end through the incoming guide tube. 4. Insert the free end through the incoming guide tube. 5. Press the gun trigger or “col[...]

MAKING A TEST WELD AND ADJUSTING LN-9 RESPONSE AND ST ARTING CHARACTERISTICS ADJUST THE POWER SOURCE DC-250, DC-400, or DC-600* 1. Connect electrode lead to terminal of desired polarity . 2. Set toggle switch to same polarity as the electrode cable connection. 3. Set toggle switch to "Output Control Remote." 4. Set mode switch to the desi[...]

ADJUST THE LN-9 CONTROLS 1. Set the "Electrode Polarity" switch to same polarity as the electrode lead. 2. Connect the "Direct Work Lead" if it is going to be used. 3. Check that "Feed Direction" is set to forward. 4. Set the "T rigger Interlock" switch as desired. 5. Set the "Meter Reading" switch [...]

MAKING A WELD 1. Inch the electrode through the gun and cable and then cut the electrode within approximately 3/8" of the end of the contact tip for solid wire and within approximately 3/4" of the extension guide for cored wire. 2. Connect the work cable to the metal to be welded. The work cable must make good electrical contact to the wo[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - ACCESSORIES - Accessories .............................................................................................................................Section C Auxiliary Equipment Contacts .......................................................[...]

AUXILIAR Y EQUIPMENT CONT ACTS The power for 1 15 volt AC auxiliary equipment can be obtained from the terminals inside the LN-9 control box. The contacts are “hot” whenever the trigger is pressed or the unit is welding. The current draw of this circuit must not exceed 1/4 ampere. TURN THE INPUT POWER TO THE POWER SOURCE OFF A T THE DISCONNECT [...]

A TT ACHING THE WIRE REEL ST ANDS The mounting hardware for mounting the stands is included with the LN-9. Screws and washers are inserted in their respective mounting holes. T o con- nect: 1. Remove the three 3/8 in. hex head bolts from the back of the wire feed unit. 2. Place the wire reel mounting stand mounting bracket in position against the b[...]

ACCESSORIES C-4 C-4 LN-9 Wire Feeder 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 ASSEMBLIES A variety of standard Lincoln and Magnum gun and cable assemblies are available for the LN-9 in 10 ft., 12 ft. and 1[...]

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 ACCESSORIES C-5 C-5 LN-9 Wire Feeder WIRE FEEDER ACCESSORIES BURNBACK DELA Y KIT (K202) Provides a precise control of the electrode burnback at the end of the weld. Prevents crat[...]

SWIVEL PLA TFORM (K178-1) For all LN-9 wire reel stand combinations. For mount- ing wire feeder-wire reel stand assembly on top of suit- able Lincoln Idealarc power sources. Recommended input cable assembly length is 10 feet (3m) when using the K178-1. Bolt the platform to the lift bail according to instructions supplied with the platform (M16260).[...]

ACCESSORIES C-7 C-7 LN-9 Wire Feeder 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 MAGNETIC SEP ARA TOR (K58) The K58 is a permanent magnet type separator designed to fit the top of the standard fill funnel of the continuous[...]

ACCESSORIES C-8 C-8 LN-9 Wire Feeder 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 T ABLE C.2 – DRIVE ROLL AND GUIDE TUBE KITS Wire Size Kit 2-Roll 4-Roll Solid Steel Electrode .030 - .035” (0.8 - 0.9 mm) KP502 - 035 KP5[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section D-1 Section D-1 LN-9 Wire Feeder T ABLE OF CONTENTS -MAINTENANCE- Maintenance ......................................................................................................................... Section D Routine Maintenance ............................[...]

SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should perform this maintenance. • T urn the input supply power OFF at the disconnect switch or fuse box before working on this equipment. • Do not touch electrically hot parts. ROUTINE MAINTENANCE DRIVE ROLLS AND GUIDE TUBES After feeding any coil of wire, inspect the dri[...]

GUN AND CABLE MAINTENANCE For instructions on periodic maintenance for the weld- ing gun and cables, refer to the manual for your specif- ic model of welding gun. Also see IM-294. GUN CABLE CONNECTOR REQUIREMENTS TO PERMIT PROPER CONNECTION TO LINCOLN LN-9 AND LN-9F WIRE FEEDER The following Figures D.1 and D.2 should serve as a guide to determine [...]

MAINTENANCE D-4 D-4 LN-9 Wire Feeder 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 FIGURE D.3 – GENERAL COMPONENT LOCA TIONS 1. CONTROL PC BOARD 2. TRIGGER PC BOARD 3. T1 TRANSFORMER 4. POWER PC BOARD 5. BOX ASSEMBL Y 6. D[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section E-1 Section E-1 LN-9 Wire Feeder Theory of Operation ............................................................................................................. Section E General Description .................................................................[...]

POWER INPUT CIRCUITS The 1 15V AC is applied (usually from the welding power source) via the input connector and through the circuit breaker and R1 resistor to the power board, the T2 trig- ger transformer , and the T1 transformer . The 24V AC developed at the T2 trigger transformer is applied to the trigger board. There it is rectified and regulat[...]

TRIGGER AND SHUTDOWN CIRCUIT When the gun trigger switch is activated (closed), the trigger board completes the trigger signal path. This energizes the CR1 relay located on the power board. The CR1 relay activates the wire drive motor and the #2 and #4 circuit, which then activates the Lincoln welding power source. The CR1 relay may also be used to[...]

ARC VOL T AGE, WIRE SPEED CONTROL AND METERING The arc voltage, which is sensed at the work piece and motor gear box, is connected through a polarity switch to the voltage board. This actual arc voltage is com- pared to the reference preset voltage that is set by the voltage control. The voltage board determines what correction signal needs to be s[...]

PRINTED CIRCUIT BOARD FUNCTIONS POWER BOARD The input power (1 15V AC) is applied to the power board, and from that the power board develops the DC field voltage for the wire drive motor . The SCR circuit- ry , used to control the motor armature voltage, is also contained on the power board. The relay used to activate motor armature voltage, field [...]

NOTES E-6 E-6 LN-9 Wire Feeder 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[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section F-1 Section F-1 LN-9 Wire Feeder T roubleshooting & Repair Section ................................................................................ Section F How to Use T roubleshooting Guide ..............................................................[...]

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 HOW T O USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may [...]

ELECTRIC SHOCK can kill. Have an electrician install and service this equipment. T urn the machine OFF before working on equipment. Do not touch electrically hot parts. 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 an[...]

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 TROUBLESHOOTING & REP AIR F-4 F-4 LN-9 Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-5 F-5 LN-9 Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-6 F-6 LN-9 Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-7 F-7 LN-9 Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-8 F-8 LN-9 Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-9 F-9 LN-9 Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do [...]

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 TROUBLESHOOTING & REP AIR F-10 F-10 LN-9 Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you d[...]

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 TROUBLESHOOTING & REP AIR F-11 F-11 LN-9 Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you d[...]

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-12 F-12 LN-9 Wire Feeder TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you d[...]

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 TROUBLESHOOTING & REP AIR F-13 F-13 LN-9 Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-14 F-14 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

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 TROUBLESHOOTING & REP AIR F-15 F-15 LN-9 Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-16 F-16 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-17 F-17 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-18 F-18 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-19 F-19 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-20 F-20 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-21 F-21 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

TROUBLESHOOTING & REP AIR F-22 F-22 LN-9 Wire Feeder 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 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AR[...]

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 TROUBLESHOOTING & REP AIR F-23 F-23 LN-9 Wire Feeder T1 TRANSFORMER TEST W ARNING Service and repair should be performed by only Lincoln Electric factory trained personnel. U[...]

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 TROUBLESHOOTING & REP AIR F-24 F-24 LN-9 Wire Feeder T1 TRANSFORMER TEST (continued) TEST PROCEDURE 1. Remove input power to the LN-9 wire feed- er . 2. Using the phillips he[...]

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 TROUBLESHOOTING & REP AIR F-25 F-25 LN-9 Wire Feeder 6. Using the volt/ohmmeter , check for 10V AC at secondary leads #601 and #602. T ypically , these leads are yellow . Pla[...]

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 TROUBLESHOOTING & REP AIR F-26 F-26 LN-9 Wire Feeder W ARNING T2 TRANSFORMER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. U[...]

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 TROUBLESHOOTING & REP AIR F-27 F-27 LN-9 Wire Feeder T2 TRANSFORMER TEST (continued) FIGURE F .3 – “PROTECTION CIRCUIT TROUBLESHOOTING” NAMEPLA TE PROTECTION CIRCUIT TR[...]

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 TROUBLESHOOTING & REP AIR F-28 F-28 LN-9 Wire Feeder T2 TRANSFORMER TEST (continued) 4. Locate the T2 transformer primary lead #32A connected to the 5 amp circuit break- er .[...]

TROUBLESHOOTING & REP AIR F-29 F-29 LN-9 Wire Feeder 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 T2 TRANSFORMER TEST (continued) Electric Shock can kill. • With power applied, there are high voltages inside the wire [...]

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 TROUBLESHOOTING & REP AIR F-30 F-30 LN-9 Wire Feeder W ARNING WIRE DRIVE MOT OR AND T ACH FEEDBACK TEST Service and repair should be performed by only Lincoln Electric factor[...]

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 TROUBLESHOOTING & REP AIR F-31 F-31 LN-9 Wire Feeder WIRE DRIVE MOT OR AND T ACH FEEDBACK TEST (continued) FIGURE F .6 – LEAD #539, #541, #626B AND #627B A T POWER PC BOARD[...]

6. Apply 1 15 V AC power . ELECTRIC SHOCK can kill. • With power applied, there are high voltages inside the wire feeder . Do not reach into the wire feeder or touch any internal part of the wire feeder while power is applied. 7. With the gun trigger activated or the gun ter- minals jumpered together (see the Wiring Diagram), check the motor arma[...]

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 TROUBLESHOOTING & REP AIR F-33 F-33 LN-9 Wire Feeder T ACH FEEDBACK TEST PROCEDURE 1. Locate tach PC board leads #510, #525 and #555 on the control PC board. See Figure F .7.[...]

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 TROUBLESHOOTING & REP AIR F-34 F-34 LN-9 Wire Feeder W ARNING VOL TMETER ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory trained personn[...]

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 TROUBLESHOOTING & REP AIR F-35 F-35 LN-9 Wire Feeder VOL TMETER ACCURACY TEST (continued) FIGURE F .8 – VOL TMETER CONNECTION POINT TEST PROCEDURE Perform the following che[...]

ELECTRIC SHOCK can kill. • With power applied, there are high voltages inside the wire feeder . Do not reach into the wire feeder or touch any internal part of the wire feeder while power is applied. 3. With the LN-9 gun trigger closed or the gun terminals jumpered together (see the Wiring Diagram), the test meter reading should match the LN-9 AC[...]

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 TROUBLESHOOTING & REP AIR F-37 F-37 LN-9 Wire Feeder W ARNING METER CIRCUIT ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory trained pers[...]

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 TROUBLESHOOTING & REP AIR F-38 F-38 LN-9 Wire Feeder METER CIRCUIT ACCURACY TEST (continued) FIGURE F .9 – METER PC BOARD LOCA TIONS AND COVER MOUNTING SCREWS TEST PROCEDUR[...]

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 TROUBLESHOOTING & REP AIR F-39 F-39 LN-9 Wire Feeder METER CIRCUIT ACCURACY TEST (continued) 5. T est for AC supply to the meter PC board. Check for 8 to 1 1 V AC from lead #[...]

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 TROUBLESHOOTING & REP AIR F-40 F-40 LN-9 Wire Feeder METER CIRCUIT ACCURACY TEST (continued) T est Digital Meter Accuracy . (For LN-9 models above code 7980 with separable di[...]

T est Meter PC Board Accuracy . (Metric Models Only) 1. Use a test meter with at least 3-1/2 digits and +/- .5% accuracy . 2. Connect the + probe to lead called for in the table below and the - probe to lead #510C. NOTE: The coating will have to be removed from the test points. 3. With the meter in SET M/MIN, adjust the speed con- trol until the LN[...]

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 TROUBLESHOOTING & REP AIR F-42 F-42 LN-9 Wire Feeder W ARNING WIRE SPEED ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory trained personn[...]

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 TROUBLESHOOTING & REP AIR F-43 F-43 LN-9 Wire Feeder WIRE SPEED ACCURACY TEST (continued) TEST PROCEDURE Perform the following checks with the LN-9 wire feeder connected to a[...]

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 TROUBLESHOOTING & REP AIR F-44 F-44 LN-9 Wire Feeder W ARNING OUT OF VOL T AGE RANGE SHUT DOWN TEST Service and repair should be performed by only Lincoln Electric factory tr[...]

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 TROUBLESHOOTING & REP AIR F-45 F-45 LN-9 Wire Feeder OUT OF VOL T AGE RANGE SHUT DOWN TEST (continued) FIGURE F .1 1 – VOL T AGE PC BOARD WITH JUMPERS BYPASS PINS 1/8 AMP F[...]

TROUBLESHOOTING & REP AIR F-46 F-46 LN-9 Wire Feeder 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 OUT OF VOL T AGE RANGE SHUT DOWN TEST (continued) 8. If the ACTUAL voltage reading is zero, the sensing leads may be faul[...]

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 TROUBLESHOOTING & REP AIR F-47 F-47 LN-9 Wire Feeder W ARNING GENERAL POWER SUPPL Y TESTS Service and repair should be performed by only Lincoln Electric factory trained pers[...]

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 TROUBLESHOOTING & REP AIR F-48 F-48 LN-9 Wire Feeder GENERAL POWER SUPPL Y TESTS (continued) TEST PROCEDURE 1. Remove input power to the LN-9 wire feeder . 2. Using the phill[...]

TROUBLESHOOTING & REP AIR F-49 F-49 LN-9 Wire Feeder 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 GENERAL POWER SUPPL Y CHECKS CHECKPOINT TEST CONNECTOR LEAD NO. NORMAL LOCA TION DESCRIPTION PLUG PIN NO. ACCEPT ABLE VOL[...]

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 TROUBLESHOOTING & REP AIR F-50 F-50 LN-9 Wire Feeder W ARNING DIGIT AL METER AND METER PC BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincol[...]

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 TROUBLESHOOTING & REP AIR F-51 F-51 LN-9 Wire Feeder FIGURE F .12 – METER P ANEL ASSEMBL Y SCREWS MOUNTING SCREWS METER DIGIT AL METER AND METER PC BOARD REMOV AL AND REPLA[...]

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 TROUBLESHOOTING & REP AIR F-52 F-52 LN-9 Wire Feeder FIGURE F .14 – METER PC BOARD REMOV AL 4 MOUNTING NUTS DIGIT AL METER AND METER PC BOARD REMOV AL AND REPLACEMENT (cont[...]

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 TROUBLESHOOTING & REP AIR F-53 F-53 LN-9 Wire Feeder W ARNING REED SWITCH (CR2) REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric facto[...]

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 TROUBLESHOOTING & REP AIR F-54 F-54 LN-9 Wire Feeder PROCEDURE 1. Remove input power to the LN-9 wire feeder . 2. Lift the right side cover assembly . 3. Locate the CR2 reed [...]

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 TROUBLESHOOTING & REP AIR F-55 F-55 LN-9 Wire Feeder W ARNING T1 TRANSFORMER REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory [...]

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 TROUBLESHOOTING & REP AIR F-56 F-56 LN-9 Wire Feeder PROCEDURE 1. Remove input power to the LN-9. 2. Using the phillips head screw driver remove the screws holding the left s[...]

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 TROUBLESHOOTING & REP AIR F-57 F-57 LN-9 Wire Feeder 6. Disconnect leads #526 and #527 from the power PC board terminals. See Figure F .17. T1 TRANSFORMER REMOV AL AND REPLAC[...]

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 TROUBLESHOOTING & REP AIR F-58 F-58 LN-9 Wire Feeder 8. Remove the two phillips head screws from the control PC board mounting panel. 9. Using the 1 1/32" wrench, remove[...]

TROUBLESHOOTING & REP AIR F-59 F-59 LN-9 Wire Feeder 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 T1 TRANSFORMER REMOV AL AND REPLACEMENT (continued) 1 1. Using the 5/16" wrench, remove the nuts and lockwashers mou[...]

F-60 F-60 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR W ARNING T ACH PC BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory [...]

TROUBLESHOOTING & REP AIR F-61 F-61 LN-9 Wire Feeder 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 PROCEDURE 1. Remove input power to the LN-9 wire feeder . 2. Using the Phillips head screw driver , remove the screws hol[...]

F-62 F-62 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR 5. Remove control PC board leads #510, #525 and #555. See Figure F .22. T ACH PC BOARD REMOV AL AND REPLACEMENT (continue[...]

F-63 F-63 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR T ACH PC BOARD REMOV AL AND REPLACEMENT (continued) REASSEMBL Y 8. Upon reassembly the spacers must be used to assure tha[...]

F-64 F-64 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT W ARNING Service and repair should be performed by only Lincoln Electric factory tr[...]

F-65 F-65 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) PROCEDURE 1. Remove input power to the LN-9 wire feeder . 2. Using the [...]

F-66 F-66 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) 1 1. Remove the three screws that hold the glas- tic mounting to the LN[...]

TROUBLESHOOTING & REP AIR F-67 F-67 LN-9 Wire Feeder 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 13. Lift the right side cover assembly and care- fully lift and slide the motor and wire drive assembly partially out of [...]

F-68 F-68 LN-9 Wire Feeder 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 TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) 15. With the slot head screw driver , remove the three screws, lock was[...]

TROUBLESHOOTING & REP AIR F-69 F-69 LN-9 Wire Feeder 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 RETEST AFTER REP AIR Retest the LN-9 wire feeder: If it fails any test and the test requires removing or replacing any me[...]

NOTES F-70 F-70 LN-9 Wire Feeder 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-1 G-1 LN-9 Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Electrical Diagram Section ............................................................................................ Section G Wiring Diagram ............................................................................[...]

NOTES LN-9 Wire Feeder 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[...]

G-2 ELECTRICAL DIAGRAMS LN-9 Wiring Diagram 517 510 518 562 518 C2 516 1 2 3 4 5 6 7 8 9 10 11 12 513 C3 VOLTS-SPEED SELECTOR SWITCH 561 560 517 1 4 3 6 2 5 7 8 9 562 561 560 517 510 518 510C 602 601 METER BOARD DIGITAL METER METER BOARD PLUG 562 561 560 517 517 510 518 518 87 6 53 4 1 2 9 510B 510A 602 601 N.O. N.C. N.C. N.O. 515 514 512 511 515 5[...]

G-3 ELECTRICAL DIAGRAMS LN-9 OPERA TING SCHEMA TIC 1702 3-25-94A 8-2-96B OPERATING SCHEMATIC FI NONE 1702 6-14-85 11-1-96 G1590 t UNLESS OTHERWISE SPECIFIED TOLERANCE ON HOLE SIZES PER E2056 ON 2 PLACE DECIMALS IS .02 WITH PUBLISHED STANDARDS. ON 3 PLACE DECIMALS IS .002 ON ALL ANGLES IS .5 OF A DEGREE MATERIAL TOLERANCE (" ") TO AGREE TH[...]

G-4 ELECTRICAL DIAGRAMS LN-9 METER BOARD (L6687) SCHEMA TIC (UNLESS OTHERWISE SPECIFIED) EC +5V 602 TP5 METER BOARD SCHEMATIC 21145 LN-9 & LN-9F (METRIC) SUBJECT S SHT. SUP'S'D'G. COMMON CONNECTION EQUIP. TYPE NO. EARTH GROUND CONNECTION POWER SUPPLY SOURCE POINT FRAME CONNECTION CHK. 9-24-93 CLEVELAND, OHIO U.S.A. VOLTAGE NET SU[...]

G-5 ELECTRICAL DIAGRAMS LN-9 TRIGGER BOARD (M13861) SCHEMA TIC 1A 600V D5 1A 600V D6 OCI1 4 3 OCI1 1 2 562 R5 1A 600V D2 1A 600V D3 332 R1 1A 600V D4 1A 600V D1 50 25V C1 1W 20V DZ1 1W 75V DZ2 332 R3 562 R4 562 R6 562 R2 500 S 530 622 20031 24 VAC SWITCH 621 TRIGGER 620 623 FILE: S20031_3EB LABELS ELECTRICAL SYMBOLS PER E1537 A PRINTED N.A. SINCE C[...]

G-6 ELECTRICAL DIAGRAMS LN-9 T ACHOMETER SCHEMA TIC 525 15.0K R2 1.3K R4 40V 600mA Q1 OCI1 2 3 1 4 1/4W ( UNLESS OTHERWISE SPECIFIED) 1A, 400V RESISTORS = Ohms ( LN-9 TACHOMETER LABELS FRAME CONNECTION SUPPLY POWER SUPPLY SOURCE POINT EQUIP. TYPE THE LINCOLN ELECTRIC CO. S UNLESS OTHERWISE SPECIFIED) NONE 19852 MW 3/8/91 SCHEMATIC 19852 THE INTERCH[...]