Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 SAFETY FOR ENGINEpowered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ___________________________________________________...
Page 3 - ii
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 SAFETY ii ii ARC RAYS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks andthe rays of the arc when welding or observingopen arc welding. Headshield and filter ...
Page 4 - iii
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 SAFETY FOR ELECTRICALLYpowered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working onthe equipment. 8.b. Install equipment in accordance with the U.S. National Electri...
Page 5 - iv; PRÉCAUTIONS DE SÛRETÉ
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 iv SAFETY iv PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instruc- tions et les précautions de sûreté specifiques qui parraissent d a n s c e m a n u e l a u s s i b i e n q u e...
Page 6 - MASTER TABLE OF CONTENTS FOR ALL SECTIONS; Page; Variable Voltage Board, Meter Shunt, Wire Speed; Parts Manual
LN-8 MASTER TABLE OF CONTENTS FOR ALL SECTIONS Page Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i-iv Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A...
Page 7 - INSTALLATION; TABLE OF CONTENTS
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SECTION A-1 INSTALLATION LN-8 SECTION A-1 TABLE OF CONTENTS -INSTALLATION SECTION- Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 8 - TECHNICAL SPECIFICATIONS – LN-8; INPUT – VOLTAGE
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 ELECTRODE DIAMETER SOLID 0.030 in. through 3/32 in. (0.76 through 2.36 mm) CORED 0.062 in. through 0.120 in. (1.57 through 3.05 ...
Page 9 - MOUNTING LOCATION; Accessories Section; POWER SOURCE CONNECTIONS; “Input Cable Connections”; TABLE A.1 – WORK LEAD SPECIFICATIONS; CAUTION
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 A-3 INSTALLATION LN-8 A-3 MOUNTING LOCATION The LN-8 can be operated as a free-standing unit, or itcan be mounted to an undercar...
Page 10 - FIGURE A.1 – POWER SOURCE SELECTION
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 A-4 INSTALLATION LN-8 A-4 LN-8S AND LN-8SE (AND CONVERTEDLN-8N AND LN-8NE) 1. Use either a constant voltage or constant current ...
Page 11 - Power Source; POWER SOURCE CONNECTION DIAGRAMS; Table A.2 – LN-8 Power Source Connection Diagrams
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 A-5 INSTALLATION LN-8 A-5 Figure No. Power Source A.2 Connection of LN-8 to an Idealarc® R3S-400, 600 or 800 (with LVC) (Discont...
Page 19 - LN-8 FOR OPPOSITE POLARITY OPERATION
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 A-13 INSTALLATION A-13 LN-8 GND 777675 32 31 2 4 ABC 42 GND 32 31 21 DUAL PROCESSCONTACTOR 42 32 31 757677 A A 42 32 31 757677 B...
Page 21 - INPUT CABLE CONNECTIONS; FIGURE A.11 – INPUT CONTROL CABLE AND
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 A-15 INSTALLATION LN-8 A-15 INPUT CABLE CONNECTIONS For connecting an LN-8 to a specific Lincoln Electricpower source, use the a...
Page 22 - FIGURE A.13 – CABLE EXTENSION
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 A-16 INSTALLATION LN-8 A-16 2. The standard cable setup consists of an electrode cable and a control cable with a polarized plug...
Page 23 - Remove the ingoing guide tube from the rear; FIGURE A.14 – WIRE FEEDER HANDLE
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 A-17 INSTALLATION LN-8 A-17 9. Remove the ingoing guide tube from the rear brass block of the wire feeder and plug theconnector ...
Page 24 - GUN AND CABLE ASSEMBLIES; GENERAL; Welding Guns; GUN CABLE CONNECTIONS
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 A-18 INSTALLATION LN-8 A-18 GUN AND CABLE ASSEMBLIES GENERAL The LN-8 is used with various guns. In all cases, thegun is shipped...
Page 25 - OPERATION
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OPERATION LN-8 SECTION B-1 SECTION B-1 TABLE OF CONTENTS -OPERATION SECTION- Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S...
Page 26 - CONSTANT CURRENT CONTROLS; FIGURE B.1 – CONSTANT CURRENT CONTROLS; SAFETY INSTRUCTION; ELECTRIC SHOCK can kill.
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 OPERATION B-2 CONTROLS AND THEIRFUNCTIONS CONSTANT CURRENT CONTROLS Operator controls for welding using a constant currentpo...
Page 27 - CONSTANT VOLTAGE CONTROLS; FIGURE B.2 – CONSTANT VOLTAGE CONTROLS
B-3 OPERATION B-3 CURRENT CONTROL. Adjusts welding current bycontrolling power source output. VOLTAGE CONTROL. Adjusts arc voltage by control-ling wire feed speed. TRIGGER INTERLOCK. With the switch in the OFFposition, the wire feed motor runs and the welding cir-cuit is energized only when the gun ...
Page 28 - CIRCUIT PROTECTION; Return to Section TOC
B-4 OPERATION B-4 CIRCUIT PROTECTION FIELD CIRCUIT FUSE. This 1/2 amp slow blow fuse,located on the Relay PC board, protects the field cir-cuit. It will blow if the field shorts or if one of the fieldcircuit components on the Relay PC board fails. MOTOR THERMAL PROTECTION. The temperaturesensing the...
Page 30 - Install the large ingoing guide into the rear brass
B-6 OPERATION B-6 7. Install the large ingoing guide into the rear brass block and tighten the locking screw. 8. Install the outgoing guide tube with its plastic insert through the front brass block. Tighten thelocking screw so the dog point goes into thegroove on the O.D. of the guide tube. 9. Set ...
Page 32 - MOUNTING A 50 OR 60 lb COIL
B-8 OPERATION B-8 WIRE REEL LOADING – 50 AND 60 lb COILS (K303 WIRE REELSTAND) MOUNTING A 50 OR 60 lb COIL 1. To remove the wire reel from its shaft, grasp the spring loaded knob and pull out. This straightensthe knob so it seats into the shaft when released.Remove the reel. 2. Lay the reel flat on ...
Page 34 - SPINNER NUT
B-10 OPERATION B-10 TO MOUNT 10 TO 44 lb (4.5 to 20 kg) SPOOLS ( 1 2 i n . / 3 0 0 m m D I A M E T E R ) O R 1 4 l b ( 6 k g )INNERSHIELD COILS: The spindle should be located in the lower mountinghole. [For 8 in. (200 mm) spools, a K468 spindle adaptermust first be slipped onto the spindle.] [For 13...
Page 35 - BRASS
B-11 OPERATION B-11 FEEDING ELECTRODE TO THE LN-8N ORLN-8S 1. Turn the reel until the free end of the electrode is accessible. 2. While tightly holding the electrode, cut off the bent end and straighten the first six inches. Cutoff the first inch. (If the electrode is not properlystraightened, it ma...
Page 36 - Turn off the control power to the LN-8 at the; FLUX TANK LOADING
B-12 OPERATION B-12 SLOW ACCELERATION STARTING(CODE 7926 AND ABOVE) The LN-8 has the capability of optimum starting for dif-ferent processes. This is accomplished by designingthe LN-8 to start with two different speeds of con-trolled acceleration. As shipped, the unit is connectedfor fast accelerati...
Page 37 - ACCESSORIES; K162 Spindle for Mounting Readi-Reels and 10 thru 30 lb
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SECTION C-1 ACCESSORIES SECTION C-1 LN-8 TABLE OF CONTENTS -ACCESSORIES SECTION- Accessories...............................................................................................................................
Page 39 - K178 MOUNTING PLATFORM; When the semiautomatic gun is mounted in a fix-; K58 MAGNETIC SEPARATOR
C-3 ACCESSORIES C-3 K163 UNDERCARRIAGE(REQUIRES K303, K377, OR K378) The undercarriage includes casters, wheels, a handle,and related hardware. Casters are mounted at thefront and wheels are mounted at the rear of the plat-form. The handle is bolted to the front of the platformso the wire feeder can...
Page 40 - REEL MOUNTING ACCESSORIES
C-4 ACCESSORIES C-4 K240 CONTACTOR KIT Output contactor with pilot relay to make the electrode‘cold’ when not welding. Must be ordered when usingt h e L N - 8 w i t h S A - 7 5 0 , S A E , T M , R 3 M a n d R 3 RIdealarcs. Contactor kits are rated at 600 amps maxi-mum, and cannot be paralleled with ...
Page 41 - WELDING GUNS; NOTE: Linconditioner; guns are recommended for; WELDING GUN ACCESSORIES
C-5 ACCESSORIES C-5 WELDING GUNS INNERSHIELD GUNS The K126 gun and cable assembly is recommendedfor most Innershield electrodes at up to 350 amps. The K115 gun and cable assembly is recommendedfor up to 450 amps. The K116 gun and cable assembly is recommendedfor up to 600 amps. NOTE: Linconditioner ...
Page 42 - NOTES
C-6 NOTES LN-8 C-6 Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
Page 43 - MAINTENANCE
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SECTION D-1 MAINTENANCE SECTION D-1 LN-8 TABLE OF CONTENTS -MAINTENANCE SECTION- Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 44 - ROUTINE MAINTENANCE; DRIVE ROLLS AND GUIDE TUBES; PERIODIC MAINTENANCE; CONTROL BOX
D-2 MAINTENANCE D-2 ROUTINE MAINTENANCE DRIVE ROLLS AND GUIDE TUBES After feeding every coil of wire, inspect the drive rollsection. Clean the assembly as necessary. Do not usesolvent to clean the drive roll assembly as it may washthe lubricant out of the bearings. The drive rolls andguide tubes are...
Page 45 - THEORY OF OPERATION
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SECTION E-1 THEORY OF OPERATION SECTION E-1 LN-8 TABLE OF CONTENTS -THEORY OF OPERATION SECTION- Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 46 - GENERAL DESCRIPTION; S C R O p e r a t i o n; FIGURE E.1 – POWER INPUT CIRCUITS
E-2 THEORY OF OPERATION E-2 GENERAL DESCRIPTION The LN-8 is a semiautomatic wire feederdesigned for Innershield (FCAW) andgas metal arc processes with the appro-priate accessories. It is also suitable forconstant voltage (CV) submerged arcwelding processes. With the optionalvariable voltage board in...
Page 47 - FIGURE E.2 – GUN TRIGGER AND 1CR CONTACT CONTROL CIRCUITS
E-3 THEORY OF OPERATION E-3 GUN TRIGGER AND 1CRRELAY CONTACT CONTROL CIRCUITS When the gun trigger switch is activat-ed (closed) the 1CR relay is energized.Three sets of isolated contacts incor-porated within the 1CR relay performseveral functions. One set of contactscompletes the circuit to energiz...
Page 48 - AND REMOTE OUTPUT CONTROLS
E-4 THEORY OF OPERATION E-4 VARIABLE VOLTAGEBOARD, METER SHUNT,WIRE SPEED ANDREMOTE OUTPUT CONTROLS T h e o p t i o n a l v a r i a b l e v o l t a g e b o a r denables the LN-8 to be used with a con-stant current power source. The vari-a b l e v o l t a g e b o a r d m o n i t o r s t h e a r cvolt...
Page 49 - SCR OPERATION
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 E-5 THEORY OF OPERATION E-5 SCR OPERATION A silicon controlled rectifier (SCR) is athree terminal semi-conductor deviceused to c...
Page 51 - TROUBLESHOOTING AND REPAIR; SECTION F
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 SECTION F TROUBLESHOOTING AND REPAIR SECTION F TABLE OF CONTENTS -TROUBLESHOOTING AND REPAIR SECTION- Troubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 52 - HOW TO USE TROUBLESHOOTING 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 LN-8 F-2 TROUBLESHOOTING AND REPAIR F-2 This Troubleshooting Guide is provided tohelp you locate and repair possible machinemalf...
Page 53 - TROUBLESHOOTING & REPAIR; PC board can be damaged by static electricity.; PC BOARD TROUBLESHOOTING PROCEDURES
LN-8 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 & REPAIR F-3 F-3 Sometimes machine failures appear to be due to PCboard failures. These problems can so...
Page 54 - FUNCTION PROBLEMS
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 1. Check the Ground Lead Protector (GLP). Reset if necessary. 2. Check the circuit breaker. Reset if necessary. 3. Make sure 115...
Page 58 - Make certain the drive rolls and; FEEDING PROBLEMS
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-8 TROUBLESHOOTING AND REPAIR F-8 LN-8 If for any reason you do not understand the test procedures or are unable to perform the...
Page 59 - WELDING PROBLEMS
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-9 TROUBLESHOOTING AND REPAIR F-9 LN-8 If for any reason you do not understand the test procedures or are unable to perform the...
Page 60 - LN-8 ELECTRICAL SEQUENCE OF OPERATION; FIGURE F.1 – LN-8 ELECTRICAL SEQUENCE OF OPERATION
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-10 TROUBLESHOOTING AND REPAIR F-10 LN-8 ELECTRICAL SEQUENCE OF OPERATION FIGURE F.1 – LN-8 ELECTRICAL SEQUENCE OF OPERATION LN...
Page 62 - TEST DESCRIPTION; This procedure takes approximately 8 minutes to perform.
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-8 F-12 TROUBLESHOOTING AND REPAIR F-12 TEST DESCRIPTION This test will aid the technician in determining if the Trigger Trans...
Page 63 - TEST PROCEDURE; TRIGGER TRANSFORMER TEST
F-13 TROUBLESHOOTING AND REPAIR F-13 TEST PROCEDURE 1. Remove input power to the LN-8. 2. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws holding the leftside cover assembly. 3. Disconnect the Molex plug from the under-side of the relay board.See Figure F.2. 4. A p p l y p o w e ...
Page 64 - INTERNAL VOLTAGE TEST; This procedure takes approximately 20 minutes to perform.
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-14 TROUBLESHOOTING AND REPAIR F-14 LN-8 TEST DESCRIPTION This test will aid the technician in determining if the correct volta...
Page 65 - A p p l y 1 1 5 V A C t o t h e i n p u t; FIGURE F.3 – VOLTAGE TEST POINTS
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-15 TROUBLESHOOTING AND REPAIR F-15 TEST DESCRIPTION 1. Remove input power to the LN-8. 2. U s i n g t h e 5 / 1 6 i n . n u t ...
Page 66 - TABLE F.1 – VOLTAGE TEST POINTS
INTERNAL VOLTAGE TEST (continued) TABLE F.1 – VOLTAGE TEST POINTS Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-16 TROUBLESHOOTING AND REPAIR F-16 LN-8 ACCEPTABLE CHECKPOIN...
Page 67 - CR RELAY TEST; This procedure takes approximately 15 minutes to perform.
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-17 TROUBLESHOOTING AND REPAIR F-17 LN-8 TEST DESCRIPTION This test will determine if the control relay is functioning properly...
Page 68 - Connect the ohmmeter across the
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-18 TROUBLESHOOTING AND REPAIR F-18 TEST PROCEDURE 1. Remove input power to the LN-8. 2. U s i n g t h e 5 / 1 6 i n . n u t d ...
Page 69 - TABLE F.2 – RELAY TEST TERMINAL CONNECTIONS
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-19 TROUBLESHOOTING AND REPAIR F-19 7. Measure the resistance across the contacts. A resistance of less thanone ohm indicates t...
Page 70 - DRIVE MOTOR TEST
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-20 TROUBLESHOOTING AND REPAIR F-20 LN-8 TEST DESCRIPTION This test will help determine if the drive motor is functioning corre...
Page 71 - FIGURE F.5 – DRIVE MOTOR TEST POINTS
F-21 TROUBLESHOOTING AND REPAIR F-21 TEST PROCEDURE 1. Remove input power to LN-8. 2. Remove the electrode wire or dis- engage drive rolls. 3. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws from the leftside cover assembly. 4. Lift the left side cover. 5. Locate leads #539 and #...
Page 72 - I f a v a r i a b l e v o l t a g e b o a r d i s; FIGURE F.6 – GUN TERMINAL JUMPER LOCATIONS
F-22 TROUBLESHOOTING AND REPAIR F-22 6. Locate leads #626 and #627 at the relay board. 7. I f a v a r i a b l e v o l t a g e b o a r d i s installed in the LN-8, make cer-tain the mode switch is in the CVposition. 8. Apply 115VAC to the input recep- tacle at pins C and D. 9. With the gun trigger ac...
Page 73 - To further check the drive motor:; AFTER TESTING
F-23 TROUBLESHOOTING AND REPAIR F-23 To further check the drive motor: 12. R e m o v e i n p u t p o w e r ( 1 1 5 V A C ) from the LN-8. 13. L o c a t e a n d r e m o v e l e a d s # 5 3 9 and #541 from the control board,see Figure F.5. 14. L o c a t e a n d r e m o v e l e a d s # 6 2 6 and #627 f...
Page 74 - MATERIALS NEEDED; POTENTIOMETER REPLACEMENT; This procedure takes approximately 10 minutes to perform.
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-24 TROUBLESHOOTING AND REPAIR F-24 LN-8 MATERIALS NEEDED 5/16 in. nutdriver1/2 in. wrench5/64 in. Allen wrenchSmall slothead s...
Page 75 - REPAIR PROCEDURE; FIGURE F.7 – POTENTIOMETER REMOVAL
F-25 TROUBLESHOOTING AND REPAIR F-25 REPAIR PROCEDURE 1. Remove input power to the LN-8 2. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws from the leftside cover assembly. 3. Using a 5/64 in. Allen wrench or slothead screwdriver, loosen thesetscrew on the potentiometer knoba n d...
Page 76 - CIRCUIT BREAKER REPLACEMENT; This procedure takes approximately 6 minutes to perform.
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-26 TROUBLESHOOTING AND REPAIR F-26 LN-8 MATERIALS NEEDED 5/16 in. nutdriver9/16 in. wrench CIRCUIT BREAKER REPLACEMENT Service...
Page 77 - I n s t a l l t h e n e w c i r c u i t b r e a k e r
F-27 TROUBLESHOOTING AND REPAIR F-27 REPAIR PROCEDURE 1. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws from the leftside cover assembly. 2. Tag and remove the two connec- tors from the back of the circuitbreaker. Refer to Figure F.8. 3. Using the 9/16 in. wrench, remove the ret...
Page 78 - GROUND LEAD PROTECTOR PUSH BUTTON
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-28 TROUBLESHOOTING AND REPAIR F-28 LN-8 MATERIALS NEEDED 5/16 in. nutdriver3/32 in. wrenchJewelers’ flat blade screwdriverSold...
Page 79 - Remove insulation and unsolder
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-29 TROUBLESHOOTING AND REPAIR F-29 REPAIR PROCEDURE 1. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws fro...
Page 80 - TRIGGER TRANSFORMER REPLACEMENT; This procedure takes approximately 12 minutes to perform.
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-30 TROUBLESHOOTING AND REPAIR F-30 LN-8 MATERIALS NEEDED 5/16 in. nutdriverFlat blade screwdriverNeedlenose pliers TRIGGER TRA...
Page 82 - PC BOARD REPLACEMENT; The Control board takes approximately 5 minutes to replace.
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-32 TROUBLESHOOTING AND REPAIR F-32 LN-8 MATERIALS NEEDED 5/16 in. nutdriverPhillips screwdriver PC BOARD REPLACEMENT Service a...
Page 85 - WIRE DRIVE ASSEMBLY AND COMPONENT REPLACEMENT; This procedure takes approximately 40 minutes to perform.
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-35 TROUBLESHOOTING AND REPAIR F-35 LN-8 MATERIALS NEEDED Offset flat blade screwdriverFlat blade screwdriverPhillips screwdriv...
Page 86 - Separate ground lead protection
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-36 TROUBLESHOOTING AND REPAIR F-36 REPAIR PROCEDURE 1. U s i n g t h e 5 / 1 6 i n . n u t d r i v e r , remove the screws fro...
Page 87 - FIGURE F.12 – REED SWITCH REMOVAL AND SHUNT ELECTRICAL CONNECTIONS
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-37 TROUBLESHOOTING AND REPAIR F-37 7. Disconnect two leads #567 (blue), a n d l e a d # 5 6 8 ( b l u e ) f r o m t h eshunt u...
Page 88 - U s i n g a f l a t b l a d e s c r e w d r i v e r ,; FIGURE F.13 – WIRE DRIVE ASSEMBLY REMOVAL
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-38 TROUBLESHOOTING AND REPAIR F-38 10. Using a 1/2 in. wrench, remove the four hex head screws, lockwash-ers and flat washers ...
Page 90 - RETEST AFTER REPAIR; Must function when gun trigger is activated.
F-40 TROUBLESHOOTING AND REPAIR F-40 I f a f a i l e d t e s t i n d i c a t e s t h a t a n ymechanical part that could affect them a c h i n e ’ s e l e c t r i c a l c h a r a c t e r i s t i c smust be replaced or if any electricalcomponents are repaired or replaced,the machine must be retested ...
Page 91 - ELECTRICAL DIAGRAMS; Return to Master TOC
G-1 ELECTRICAL DIAGRAMS G-1 Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TABLE OF CONTENTS -ELECTRICAL DIAGRAMS SECTION- Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section ...
Page 92 - Wiring Diagram
G-2 ELECTRICAL DIAGRAMS LN-8 Wiring Diagram 2 5 0 2 4 5 0 4 5 3 1 3 2 A * 1 6 2 3 4 5 2 5 0 2 4 5 0 4 5 3 13 2 A 5 2 8 5 2 5 W I R E F E E D M O T O R 5 3 9 U 5 4 1 B R 6 2 6 6 2 7 W B U R N B A C K P . C . B O A R D J U M P E R C O N N E C T O R I S R E M O V E D A N D C O N N E C T O R " B ...
Page 93 - CONNECTION SCHEMATIC
G-3 ELECTRICAL DIAGRAMS LN-8 CONNECTION SCHEMATIC 14 66 9 Ch’ge. Sht. No. 3 - 3 1 - 8 3 N 1 1 - 1 4 - 8 6 G 2 - 1 3 - 8 7 G 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 ...
Page 94 - OPERATING SCHEMATIC
G-4 ELECTRICAL DIAGRAMS LN-8 OPERATING SCHEMATIC 5 4 2 3 6 1 3 2 A5 3 1 45 0 4 5 0 2 2 2 4 1 C R 5 0 4 N . A . 3 2 3 2 A 5 A M P C I R C U I T B R E A K E R TP201 C204 7 7 7 6 7 5 R20 T 1 526 525A C205 5 2 5 R205 523 5 2 4 S 1 R204 S 2 536 R202 D205 5 2 9 2 C R 5 2 8 D 2 0 4 1 C R C201 R206 S C R 5 ...
Page 97 - CONTROL; FS
G-7 ELECTRICAL DIAGRAMS LN-8 CONTROL BOARD (L5767) LAYOUT LN-8 CONTROL L5767-1 D6 D7 12 34 56 78 N O BAL CAL FS I T E M R E Q ’ D . P A R T N o . I D E N T I F I C A T I O N C 1C 2C 3C 4C 5C 6 , C 1 0 , C 1 1 , C 1 2 , C 1 3C 7 , C 8C 9 11111521 S 1 3 4 9 0 - 4 2S 1 3 4 9 0 - 6 7S 1 3 4 9 0 - 1 0 4S...
Page 98 - I N D U C T A N C E = H E N R Y
G-8 ELECTRICAL DIAGRAMS LN-8 VARIABLE VOLTAGE BOARD (L5039) LAYOUT I D E N T I F I C A T I O N P A R T N O . R E Q ’ D I T E M I N D U C T A N C E = H E N R Y C A P A C I T O R S = M F D V O L T S L5039-1 LN-8 VARIABLE VOLTAGE VV CV 8 - 3 1 - 2 0 0 1 E L 5 0 3 9 - 1 G-8 Retur n to Section TOC Retur ...
Page 99 - SVM ERROR REPORTING FORM; Please give detailed description below:
SVM ERROR REPORTING FORM We need to know if there are errors in our manuals. We also value any suggestions as toadditional tests or procedures that would make this SVM a better tool for you. If you discover new or different “Problems or Symptoms” that are not covered in the three col-umn troubleshoo...
