Instruction/ maintenance manual of the product LN-25 SVM114-C Lincoln Electric
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LN-25 ™ POR T ABLE C V/CC SEMIA UTOMA TIC WIRE FEEDER Safety Depends on Y ou Lincoln arc welding and cutting equip- ment is designed and built with saf ety in mind. Howe v er , your ov erall saf ety can be increased by proper installation ... and thoughtful operation on y our par t.
SAFETY i i i i Return to Master T OC Retur n to Master T OC Retur n to Master T OC Retur n to Master T OC FOR ENGINE powered equipment. 1.a. T ur n the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running.
SAFETY i i i i i i i i Return to Master T OC Retur n to Master T OC Retur n to Master T OC Retur n to Master T OC FUMES AND GASES can be dangerous. 5.a. Welding may produce fumes and gases hazardous to health. Av oid breathing these fumes and gases.When welding, keep your head out of the fume.
S S A A F F E E T T Y Y i i i i i i i i i i i i Return to Master T OC Retur n to Master T OC Retur n to Master T OC Retur n to Master T OC Jan ‘07 FOR ELECTRICALL Y powered equipment. 8.a. T ur n off input power using the disconnect switch at the fuse bo x before working on the equipment.
S S A A F F E E T T Y Y i i v v i i v v Return to Master T OC Retur n to Master T OC Retur n to Master T OC Retur n to Master T OC Mar ‘93 PRÉCAUTIONS DE SÛRETÉ P our votre propre protection lire.
v v LN-25™ MASTER T ABLE OF CONTENTS FOR ALL SECTIONS Page Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i-iv Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ABLE OF CONTENTS - INST ALLA TION SECTION - LN-25™ Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A T echnical Specifications . . . . . . . . . . . . . . . . . . . . . . .
INST ALLA TION A-2 LN-25™ A-2 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 .
INST ALLA TION A-3 LN-25™ A-3 ELECTRIC SHOCK can kill. • Do not operate with cov ers remov ed. • T ur n off po wer source bef ore installing or ser vicing. • Do not touch electr ically hot par ts. • T ur n the input po wer to the welding pow er source off at the fuse bo x bef ore working in the terminal strip.
INST ALLA TION A-4 LN-25™ A-4 c. Place “Set to Same P olarity As Electrode Cable Connection” s witch at appropriate position. d . Place power source toggle switch in “Output Control at DC(CV) -400™” position, unless a remote control is connected to 75, 76 and 77 on the pow er source terminal str ip or to the MS type c on n ec t or.
INST ALLA TION A-5 LN-25™ A-5 Install the barbed fitting and union nut to the 5 ⁄ 8 -18 f emale inert gas fitting on the front panel of the L N- 25™ case. Connect the 3 ⁄ 16 " I.D . gas hose from the gun cable to the barbed fitting. When the gun is to be remov ed, this fitting can be easily detached by loosening the union nut.
NO TES A-6 A-6 LN-25™ 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 OF CONTENTS - OPERA TION SECTION - LN-25™ Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section B Saf ety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERA TION B-2 B-2 LN-25™ ELECTRIC SHOCK can kill. • Do not touch electrically live par t or electrode with skin or wet clothing. • Insulate yourself from w ork and ground. • Alwa ys wear dr y insulating glov es. ARC RA YS can burn. • W ear ey e, ear and body pro- tection.
OPERA TION B-3 B-3 LN-25™ V OL TMETER (F actory installed on model Codes above 9218) The 40V DC analog v oltmeter is mounted to the front control panel of the LN-25™ and is connected to read the arc v oltage betw een the LN-25™ electrode cab le connection and the work clip lead.
OPERA TION B-4 B-4 LN-25™ WORK CLIP LEAD I M P O R TA N T S A F E T Y N O T E : T o av oid possible electrical shock, do not touch the metal por tions of the LN-25™ work lead clip if the po wer source output is on.
OPERA TION B-5 B-5 LN-25™ g. T o remov e Readi-Reel ® from Adapter , depress re - taining spring tab with thumb while pulling the Readi-Reel ® c ag e f r om th e m o ld e d a da p te r w i t h both hands. It is not necessary to remov e adapter f ro m s p in d le .
OPERA TION B-6 B-6 LN-25™ LO ADING WIRE DRIVE a. T urn the reel or spool until the free end of the electrode is accessible . b . While tightly holding the electrode, cut off the bent end and straighten the first six inches.
OPERA TION B-7 B-7 LN-25™ screw in the gearbox conductor b lock and pull the gun cable f orward about six i nches. There should be a slight wa viness in the exposed wire. If there is no w aviness , the pressure is too low . Increase the pressure setting 1 ⁄ 4 tur n, lock the gun cable in place and repeat the abov e steps .
OPERA TION B-8 B-8 LN-25™ Arc V olts Used Desired In/Min 16 18 20 22 24 26 28 30 32 34 50 109 97 88 80 73 67 63 58 55 51 60 131 117 105 95 88 81 75 70 66 62 70 153 136 123 111 102 94 88 82 77 72 80 .
OPERA TION B-9 B-9 LN-25™ ARC RA YS can b urn. • Do not touch metal portions of the LN-25™ lead Clip when w elding po wer source is on. CYLINDER may explode if damaged. • K eep cylinder upright and chained to suppor t. • K eep cylinder awa y from areas where it ma y be dam- aged.
OPERA TION B-10 B-10 LN-25™ Do not use LN-25™ models below Code 9200 with any TI G or S qua re W av e we ldi ng p ower s ou rce s. D o not use LN-25™ models equipped with inter nal contactors with non-Lincoln TIG or Square W a v e welding power sources.
T ABLE OF CONTENTS - ACCESSORIES SECTION - LN-25™ Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section C LN-25™ Option Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A CCESSORIES C-2 C-2 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-25.
A CCESSORIES C-3 C-3 LN-25™ OPTIONAL A CCESSORIES ELECTRIC SHOCK can kill. • Do not operate with cov ers remov ed. • T u rn of f po we r s o ur ce be f or e i ns ta l l in g o r s e rv ic i n g .
LN-25™ CONT A CTOR KIT (K443-1 FOR CODES BELO W 10500, K443-2 FOR CODES 10500 TO 10558 OR K433-3 FOR CODES ABO VE 11144) (F act ory ins ta ll ed i n K 44 9 Mod el .
A CCESSORIES C-5 C-5 LN-25™ K439 REMO TE EXTENSION CABLE ASSEMBL Y The 50 ft. Extension cab le assemb lies are used to e x - tend the K432 Remote Control Cab le Assembly when longer cable lengths are required. Multiple K439 Extensions ma y be used, how e v er , to pre vent excessiv e weld cable voltage drops, the 500 amp max.
A CCESSORIES C-6 C-6 LN-25™ TO GUN SWITCH CONNECT LEADS TO PINS "A" AND "C" S12024-1 (L.E. PART NO.) AMPHENOL AN3057-10 (OR EQUIV.) S12020-6 (L.E. PART NO.) AMPHENOL MS-3106A-18-11P (OR EQUIV.) “A Dia. Hole” T o be Concentric to .
T ABLE OF CONTENTS - MAINTENANCE SECTION - LN-25™ Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section D Saf ety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE D-2 D-2 LN-25™ ELECTRIC SHOCK can kill. • Do not operate with cov ers remov ed. • T urn of f p o w e r so u r ce be f or e installing or ser vicing. • Do not touch electrically hot par ts. • T ur n the input po wer to the welding power source off at the fuse bo x before w orking in the terminal strip.
MAINTENANCE D-3 D-3 LN-25™ Proper positioning of this module is critical to proper operation of the LN-25™ wire feed speed control. If the de vice is not screw ed in f ar enough, the LN-25™ motor speed could be unstable or r un at full speed with no control.
NO TES D-4 D-4 LN-25™ 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 OF CONTENTS - THEOR Y OF OPERA TION SECTION - LN-25™ Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section E General Descr iption . . . . . . . . . . . . . . . . . . . . . . . . . . .
THEOR Y OF OPERA TION E-2 E-2 LN-25™ GENERAL DESCRIPTION The LN-25™ is a portable semiautomatic wire f e e d e r d e s i g n e d t o o p e r a t e f r o m a D C a r c voltage . It is designed f or maximum versatility in a v ariety of field applications .
THEOR Y OF OPERA TION E-3 E-3 LN-25™ FEEDB A CK AND CONTROL CIRCUITS The combination of the range s witch and wire speed control provides a command voltage for the control board. The hall eff ect module transf orms the motor RPM to a digital voltage frequency that is “fed back” to the control board.
THEOR Y OF OPERA TION E-4 E-4 LN-25™ OPTIONAL CIRCUITS CONT A CT OR The contactor , contactor PC board, and cold inch s witch are commonly incorporated in the LN-25™. This f eature enab les the user to ha v e an electrically “COLD” gun ev en though the power sources output ter minals are electr ically “HOT”.
THEOR Y OF OPERA TION E-5 E-5 LN-25™ PR O TECTIVE DEVICES AND CIRCUITS O VER V OL T A GE SHUTDO WN If the power source open circuit voltage e xceeds ab ou t 110 - 12 0 vo l ts , th e LN- 25 ™ wi ll n ot op er a te un t il th e po w er sou rc e v ol t ag e dro p s bel o w ab ou t 10 2- 11 2 v o lt s .
NO TES E-6 E-6 LN-25™ 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 OF CONTENTS - TR OUBLESHOO TING AND REP AIR SECTION - LN-25™ T r o u b l e s h o o t i n g a n d R e p a i r .................................... S e c t i o n 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 LN-25™ TROUBLESHOOTING AND REP AIR F-2 F-2 This T roubleshooting Guide is pro vided to help you locate and repair possib le machine malfunctions.
LN-25™ 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 AND REP AIR F-3 F-3 Sometimes machine f ailures appear to be due to PC board f ailures.
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 . With the gun tr igger circuit activ ated and the mode s witch in the CV position, check f or the presence of 2 to 23 VDC at leads 539 to 541.
The wire stops or stubs while welding. NO TE: On codes abov e 10100, the motor leads (541 & 539) are in Control Board Connector J4, pins 13 & 14. FEEDING PROBLEMS (Contin ued) TR OUBLESHOO TING AND REP AIR Observe Safety Guidelines detailed in the beginning of this manual.
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 1 . Per for m t he C o nt a ct o r Tes t . N OTE : T est is code specific. Codes abov e 10100 ma y o r m a y n o t h a v e a Contactor PC Board.
TR OUBLESHOO TING AND REP AIR F-7 F-7 LN-25™ TEST DESCRIPTION This test will deter mine if the gas solenoid v alv e or the solenoid PC board are functional.
TR OUBLESHOO TING AND REP AIR F-8 F-8 LN-25™ TEST PROCEDURE GAS SOLENOID V AL VE 1 . O pe n t he c a se d o o r . R e mo ve th e w i re r e el by removing the retaining collar . See Figure F .1. 2 . Remov e the screws holding the control bo x cov er in place and remov e the control bo x c ove r .
TR OUBLESHOO TING AND REP AIR F-9 F-9 LN-25™ 3. Locate and remove the tw o solenoid leads from the solenoid v alve (F or codes 9812 and belo w , remov e the two leads from the Solenoid PC Board). See Figure F .2. 4. Make sure the gas supply f or the solenoid is hooked up , and then apply 12 VDC to the gas solenoid.
TR OUBLESHOO TING AND REP AIR F-10 F-10 LN-25™ SOLENOID PC BO ARD 1. Apply at least 25 VDC but no more than 100 VDC to the LN-25™ from the electrode cable to the work sensing lead. Mak e sure the polarity s witch is set to match the polarity of the e le c t r od e c a bl e.
TR OUBLESHOO TING AND REP AIR F-11 F-11 LN-25™ 2 . Check f or the presence of the DC v oltage applied from lead 624A(+) to lead 621(-). See F ig u re F . 4 3. Check f or the presence of 12 VDC from lead 512(+) to lead 621(-). 4. Check f or the presence of 10 VDC from lead 606(+) to lead 621(-).
NO TES F-12 F-12 LN-25™ 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.
TR OUBLESHOO TING AND REP AIR F-13 F-13 LN-25™ GAS SOLENOID V AL VE AND CONTROL PC BO ARD TEST (FOR CODES ABO VE 10500 ONL Y) W ARNING Ser vice and repair should be perf ormed by only Lincoln Electric factory trained personnel.
TR OUBLESHOO TING AND REP AIR F-14 F-14 LN-25™ 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 GAS SOLENOID V AL VE AND CONTROL PC BO ARD TEST (FOR CODES ABO VE 10500 ONL Y) (continued) FIGURE F .
TR OUBLESHOO TING AND REP AIR F-15 F-15 LN-25™ 3. Locate and remov e the two solenoid leads #690 and #691 from the solenoid v alve . See Figure F . 6 . 4. Make sure the gas supply f or the solenoid is hooked up , and then apply 12 VDC to the gas solenoid.
TR OUBLESHOO TING AND REP AIR F-16 F-16 LN-25™ 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 GAS SOLENOID V AL VE AND CONTROL PC BO ARD TEST (FOR CODES ABO VE 10500 ONL Y) (continued) FIGURE F .
TR OUBLESHOO TING AND REP AIR F-17 F-17 LN-25™ 690 691 512 500 555 667 621 J1 J3 J4 J2 2 . Check f or the presence of the DC v oltage a pp l ie d f ro m p lu g J 1 pi n 1 ( 6 67 + ) to p l ug J 1 p in 3 621(-). See Figure F .8.or F .8.a. 3. Check f or the presence of 5 to 6 VDC from lead 690(+) to lead 691(-) at solenoid valv e .
NO TES F-18 F-18 LN-25™ 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.
TR OUBLESHOO TING AND REP AIR F-19 F-19 LN-25™ HALL EFFECT MODULE TEST TEST DESCRIPTION This test will determine if the hall effect module is functioning correctly .
TR OUBLESHOO TING AND REP AIR F-20 F-20 LN-25™ TEST PROCEDURE 1. Open the case door . Remo ve the wire reel b y removing the retaining collar . See Figure F .5. 2 . Remov e the screws holding the control bo x cov er in place and remov e the control bo x c ove r .
TR OUBLESHOO TING AND REP AIR F-21 F-21 LN-25™ 4. Apply at least 25 VDC but no more than 100 VDC to the LN-25™ from the electrode cable to the work sensing lead. Obser v e polarity and set p ol a r it y sw it c h. 5. Check f or the presence of 12 VDC from lead 5 1 2 ( + ) t o l e a d 5 0 0 ( - ) .
NO TES F-22 F-22 LN-25™ 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.
TR OUBLESHOO TING AND REP AIR F-23 F-23 LN-25™ WIRE DRIVE MO T OR TEST TEST DESCRIPTION The f ollowing procedure will determine if the wire dr iv e motor is functional.
TROUBLESHOOTING AND REP AIR F-24 F-24 LN-25™ TEST PROCEDURE 1. Open the case door . Remove the wire reel by removing the retaining collar . See Figure F .5. 2 . Remove the screws holding the control box cover in place and remove the control box c ov e r .
TR OUBLESHOO TING AND REP AIR F-25 F-25 LN-25™ CONT A CT OR & CONT A CT OR PC BO ARD TEST TEST DESCRIPTION The f ollowing test will determine if the contactor is functional. MA TERIALS NEEDED Phillips Head Screwdriv er 12 VDC Supply V olt/Ohmmeter NOTE: LN-25™ units with the L12253-[ ] Control Board do not use a Contactor PC Board.
TR OUBLESHOO TING AND REP AIR F-26 F-26 LN-25™ CONT A CT OR TEST PROCEDURE 1. Open the case door . Remo ve the wire reel b y removing the retaining collar . See Figure F .5. 2 . Remov e the screws holding the control bo x cov er in place and remov e the control bo x c ove r .
TR OUBLESHOO TING AND REP AIR F-27 F-27 LN-25™ 4. Apply 12 VDC to the contactor coil leads. Do not leave the 12 VDC applied to the contactor coil for a pr olonged period of time (15 seconds maximum). Damage to contactor may result. 5. If the contactor does not activate when the 12 VDC is applied, the contactor is f aulty .
TROUBLESHOOTING AND REP AIR F-28 F-28 LN-25™ CONT ACTOR PC BOARD TEST 1. Check to be sure plug J9, on contactor board and plug J3, on the control board are present and secure. See Figures F .14 an d F . 15 . 2 . If optional gas timer pc board is in stalled, remove plug J6 from contactor board and install jumper plug.
TR OUBLESHOO TING AND REP AIR F-29 F-29 LN-25™ TP1 R65 D49 R81 R43 R49 C40 DZ10 Q7 R60 D32 C5 R110 D37 R115 X4 R37 R2 C22 R14 C31 R117 R16 X5 R52 R113 T1 R4 R88 D8 Q10 DZ15 D18 D16 C26 R71 R35 C4 R9.
NO TES F-30 F-30 LN-25™ 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.
TR OUBLESHOO TING AND REP AIR F-31 F-31 LN-25™ CONT A CT OR PC BO ARD REPLA CEMENT T OOLS REQ UIRED Phillips Head Screwdriv er Return to Section TOC Return to Section TOC Return to Section TOC Retur.
TR OUBLESHOO TING AND REP AIR F-32 F-32 LN-25™ REP AIR PROCEDURE 1 . Obser ve the static electricity precautions detailed in PC Board T roubleshooting Procedures at the beginning of this section. 2. Open the case door . Remo ve the wire reel b y removing the retaining collar .
TROUBLESHOOTING AND REP AIR F-33 F-33 LN-25™ 5 . For codes 9812 and below, remove the contactor coil leads and plug J7 from the contactor PC board. See Figure F .17. A l so f o r codes 9812 and below , remove plug J3 from the c on t ro l P C bo a rd .
6. Remov e the four scre ws from the front panel holding the contactor PC board assembly in place. Carefully remo ve the contactor PC board assembly . See Figure F .19. 7. Place the new contactor PC board assemb ly in position behind the front panel. Secure the contactor PC board assembl y by installing the f our screws into the front panel.
TR OUBLESHOO TING AND REP AIR F-35 F-35 LN-25™ CONTR OL PC BO ARD REPLA CEMENT T OOLS REQ UIRED Phillips Head Screwdriv er Return to Section TOC Return to Section TOC Return to Section TOC Return to.
TR OUBLESHOO TING AND REP AIR F-36 F-36 LN-25™ REP AIR PROCEDURE 1 . Obser ve the static electricity precautions detailed in PC Board T roubleshooting Procedures at the beginning of this section. 2 . O pe n t he c a se d o o r . R e mo ve th e w i re r e el by removing the retaining collar .
TR OUBLESHOO TING AND REP AIR F-37 F-37 LN-25™ TP1 R65 D49 R81 R43 R49 C40 DZ10 Q7 R60 D32 C5 R110 D37 R115 X4 R37 R2 C22 R14 C31 R117 R16 X5 R52 R113 T1 R4 R88 D8 Q10 DZ15 D18 D16 C26 R71 R35 C4 R9.
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 7 . R e m o v e t h e s c r e w s h o l d i n g t h e c o n t r o l P C board to the inside of the case.
TR OUBLESHOO TING AND REP AIR F-39 F-39 LN-25™ T OOLS REQ UIRED Phillips Head Screwdriv er 5/16" Nut Driver 11/16" Wrench Ser vice and repair should be perf ormed by only Lincoln Electric factory trained personnel.
TROUBLESHOOTING AND REP AIR F-40 F-40 LN-25™ REP AIR PROCEDURE 1. Open the case door . Remove the wire reel by removing the retaining collar . See Figure F .5. 2 . Remove the screws holding the control box cover in place and remove the control box c ov e r .
Ser vice and repair should be perf ormed by only Lincoln Electric factory trained personnel. Unauthorized repairs perf ormed on this equipment may result in danger to the technician or machine operator and will in validate y our f actory warranty .
F-42 TROUBLESHOOTING AND REP AIR F-42 LN-25™ CONT ACTOR REPLACEMENT (continued) WORK SENSING LEAD POLARITY SWITCH ELECTRODE CABLE V OLTAGE SENSING LEAD #67 WELDING CABLES CONTACTOR IN-LINE CONNECTORS 11/16" BRASS NUTS ELECTRODE LEAD FIGURE F .26.
TR OUBLESHOO TING AND REP AIR F-43 F-43 LN-25™ GAS SOLENOID V AL VE AND/OR SOLENOID PC BO ARD (IF PRESENT) REPLA CEMENT T OOLS REQ UIRED Phillips Head Screwdriv er 3/4" Wrench Pliers Ser vice and repair should be perf ormed by only Lincoln Electric factory trained personnel.
TR OUBLESHOO TING AND REP AIR F-44 F-44 LN-25™ REP AIR PROCEDURE 1 . O pe n t he c a se d o o r . R e mo ve th e w i re r e el by removing the retaining collar . See Figure F .5. 2 . Remov e the screws holding the control bo x cov er in place and remov e the control bo x c ove r .
TR OUBLESHOO TING AND REP AIR F-45 F-45 LN-25™ 4c. Remove the gas hose from the solenoid nipple . 4 d. Using the 3/8” nut driver , remov e the purge button n ut from the assembly . Remo ve the purge button. 4e. Remove an y necessary brass fittings required.
5 . F o r c o d e s 9 8 1 2 a n d b e l o w, r e m o v e t h e t w o solenoid leads from the solenoid PC board and disconnect the purge s witch leads. See Figure F .31. Also , remov e plug J2 from the control b oa r d. 6 . R e m o ve t h e g a s h o s e f r o m t h e g a s s o l e n o i d nipple.
TR OUBLESHOO TING AND REP AIR F-47 F-47 LN-25™ DRIVE MO T OR AND GEARBO X REPLA CEMENT AND A CCESS T O HALL EFFECT MODULE T OOLS REQ UIRED Phillips Head Screwdriv er 3/4" Wrench 5/8" Wrenc.
TROUBLESHOOTING AND REP AIR F-48 F-48 LN-25™ REP AIR PROCEDURE 1 . Observe the static electricity precautio ns detailed in PC Board Troubleshooting Procedures at the beginning of this section. 2. Open the case door . Remove the wire reel by removing the retaining collar .
TR OUBLESHOO TING AND REP AIR F-49 F-49 LN-25™ 7 . R e m o v e t h e t w o s c r e w s a n d l o c k w a s h e r s holding the rear end plate to the gearbo x and remov e the rear end plate. Remo ve the three drive motor mounting scre ws, flat w ashers and lock w ashers (one is inside the gearbo x h ou s in g ).
TR OUBLESHOO TING AND REP AIR F-50 F-50 LN-25™ DRIVE MO T OR AND GEARBO X REPLA CEMENT AND A CCESS T O HALL EFFECT MODULE (continued) FIGURE F .34. – DRIVE MOT OR REPLA CEMENT .
TR OUBLESHOO TING AND REP AIR F-51 F-51 LN-25™ RETEST AFTER REP AIR If a f ailed test indicates that any mechanical part that could aff ect the machine’ s electr ical characteristics must be replaced or if an y electrical components are re pa ir ed o r rep la ce d, t he m ach in e mu st be r et es te d and meet the f ollowing standards .
NO TES F-52 F-52 LN-25™ 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-25™ G-1 ELECTRICAL DIA GRAMS G-1 T ABLE OF CONTENTS -ELECTRICAL DIA GRAMS SECTION- E L E C T R I C A L D I A G R A M S ..........................................................S E C T I O N G WIRING DIA GRAM - ABO VE CODE 11140 (G4679) . . . . .
ELECTRICAL DIA GRAMS G-2 ¤ ¤ WIRING DIA GRAM - ABO VE CODE 11140 (G4679) 530A 512 606 607 530 500 HI LO 523B 522 VM AR C VOL T ME TE R + 667 621 632 633 631 10K R1 WI RE SPEE D CONTR OL R HE OS TA T W N.
ELECTRICAL DIA GRAMS G-3 ¤ ¤ WIRING DIA GRAM - CODE 10556 THRU 10500 (L10925) G-3 NOTE: This diag ram is for ref erence only . It may not be accur ate for all machines cov ered by this manual. The wir ing diagram specific to y our code is pasted inside one of the enclosure panels of your machine.
ELECTRICAL DIA GRAMS G-4 ¤ ¤ WIRING DIA GRAM - CODE 10100 THRU 10500 (L9644) G-4 NOTE: This diag ram is for ref erence only . It may not be accur ate for all machines cov ered by this manual. The wir ing diagram specific to y our code is pasted inside one of the enclosure panels of your machine.
ELECTRICAL DIA GRAMS G-5 ¤ ¤ WIRING DIA GRAM - BELO W CODE 9900 (L7545) G-5 NOTE: This diag ram is for ref erence only . It may not be accur ate for all machines cov ered by this manual. The wir ing diagram specific to y our code is pasted inside one of the enclosure panels of your machine.
ELECTRICAL DIA GRAMS G-6 ¤ ¤ SCHEMA TIC - COMPLETE MACHINE - CODES ABO VE 11140 (G5366) EN-170 G5366 LN -25 (A CR OSS T H E AR C) MAC HI N E SC HEM ATIC NONE G4198- 1 M .
ELECTRICAL DIA GRAMS G-7 ¤ ¤ SCHEMA TIC - COMPLETE MACHINE - BELO W CODE 9900 ONL Y (G1833) G-7 NOTE: This diagr am is for ref erence only . It may not be accurate f or all machines cov ered by this manual.
ELECTRICAL DIA GRAMS G-8 ¤ ¤ SCHEMA TIC - CONTROL PC BD - ABOVE CODE 11140 (G4616-5) G-8 NOTE: This diagr am is for ref erence only . It may not be accurate f or all machines cov ered by this manual.
ELECTRICAL DIA GRAMS G-9 ¤ ¤ SCHEMA TIC - CONTROL PC BD - CODE 10556 THRU 10558 (G3424-3) G-9 NOTE: This diagr am is for ref erence only . It may not be accurate f or all machines cov ered by this manual.
ELECTRICAL DIA GRAMS G-10 ¤ ¤ SCHEMA TIC - CONTROL PC BD - CODE 10100 THRU 10500 (G2194) G-10 NOTE: This diagr am is for ref erence only . It may not be accurate f or all machines cov ered by this manual.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
ELECTRICAL DIA GRAMS G-15 ¤ ¤ SCHEMA TIC - CONT ACT OR PC BD - ABO VE CODE 10500 (M10965) POWER SUPPLY SOURCE POINT CONTACTOR SUP’S’D’G. DIODES = CAPACITORS = GENERAL INFORMATION LAST NO.
ELECTRICAL DIA GRAMS G-16 ¤ ¤ SCHEMA TIC - CONT ACT OR PC BD - CODE 10100 THRU 10500 (M17621) y ( y y ) g R i i D S STANDARD This print is Current G-16 NOTE: This diagr am is for ref erence only . It may not be accurate f or all machines cov ered by this manual.
ELECTRICAL DIA GRAMS G-17 ¤ ¤ SCHEMA TIC - CONT ACT OR PC BD - BELO W CODE 9900 (L7535-[ ] CONT ACT OR - M15428) G-17 NOTE: This diagr am is for ref erence only .
ELECTRICAL DIA GRAMS G-18 ¤ ¤ SCHEMA TIC - CONT ACT OR PC BD - BELO W CODE 9900 (L9185-[ ] CONT ACT OR - M17139) y ( y y ) g G-18 NOTE: This diagr am is for ref erence only .
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
NOTE: Lincoln Electric assumes no responsibility for liab lilities resulting from board level troub leshooting. PC Board repairs will in validate your f actory warranty . Individual Printed Cir cuit Board Components are not available fr om Lincoln Electric.
An important point after buying a device Lincoln Electric LN-25 SVM114-C (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lincoln Electric LN-25 SVM114-C yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lincoln Electric LN-25 SVM114-C - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lincoln Electric LN-25 SVM114-C you will learn all the available features of the product, as well as information on its operation. The information that you get Lincoln Electric LN-25 SVM114-C will certainly help you make a decision on the purchase.
If you already are a holder of Lincoln Electric LN-25 SVM114-C, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lincoln Electric LN-25 SVM114-C.
However, one of the most important roles played by the user manual is to help in solving problems with Lincoln Electric LN-25 SVM114-C. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lincoln Electric LN-25 SVM114-C along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
